- Photolysis of the BODIPY dye activated by pillar[5]arene
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Here, a pseudo[3]rotaxane comprising a fluorescent BODIPY derivative and pillar[5]arene was conveniently fabricatedviahost-guest complexation. Importantly, in this system, the efficient photodecomposition of the BODIPY derivative in the presence of pillar
- Zhang, Haifan,Wang, Long,Dong, Puyang,Mao, Shuqiang,Mao, Pu,Liu, Guoxing
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- Pillararene-enriched linear conjugated polymer materials with thiazolo[5,4-d]thiazole linkages for photocatalysis
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A heteroatom-doped conjugated polymer with tunable bandgap is synthesized using pillararenes as the electron-richC2symmetric nodes and thiazolo[5,4-d]thiazole as the electron-deficient linkage. The influence of pillararenes in regulating the band structure and photogenerated charge carrier transportation for photocatalytic environmental contaminant degradation has been revealed.
- Li, Zheng,Li, Lu,Wang, Yan,Yang, Ying-Wei
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- Fulleropillar[4]arene: The Synthesis and Complexation Properties
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A multihydroquinone ether dialdehyde derivative 2 was incidentally obtained through an unexpected ring opening of pillar[4]arene[1]quinone 1. And the Prato reaction of 2 with [60]fullerene led to [60]fullerene bisadducts, from which trans-4 cyclic regioisomer 3 was isolated and characterized. The fulleropillar[4]arene 3 showed a larger cavity and can accommodate a viologen derivative C12V2+with a much stronger affinity than permethyl pillar[5]arene (MP5) and pillar[4]arene[1]quinone 1.
- Dai, Ling,Ma, Jingyu,Mi, Yan,Wu, Wanhua,Xiao, Chao,Yang, Cheng,Yao, Jiabin
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- All-solid-state lithium organic battery with composite polymer electrolyte and Pillar[5]quinone cathode
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The cathode capacity of common lithium ion batteries (LIBs) using inorganic electrodes and liquid electrolytes must be further improved. Alternatively, all-solid-state lithium batteries comprising the electrode of organic compounds can offer much higher capacity. Herein, we successfully fabricated an all-solid-state lithium battery based on organic pillar[5]quinone (C35H20O10) cathode and composite polymer electrolyte (CPE). The poly(methacrylate) (PMA)/poly(ethylene glycol) (PEG)-LiClO4-3 wt % SiO2 CPE has an optimum ionic conductivity of 0.26 mS cm-1 at room temperature. Furthermore, pillar[5]quinine cathode in all-solid-state battery rendered an average operation voltage of ~2.6 V and a high initial capacity of 418 mAh g-1 with a stable cyclability (94.7% capacity retention after 50 cycles at 0.2C rate) through the reversible redox reactions of enolate/quinonid carbonyl groups, showing favorable prospect for the device application with high capacity.
- Zhu, Zhiqiang,Hong, Meiling,Guo, Dongsheng,Shi, Jifu,Tao, Zhanliang,Chen, Jun
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- A low pH sensor from an esterified pillar[5]arene
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An esterified pillar[5]arene has been incorporated into a PVC electrochemical membrane. The resulting pH-responsive sensor functions in the range of pH 1 to 4 in a non-linear manner. The Royal Society of Chemistry.
- Kothur, Raghuram Reddy,Hall, Jessica,Patel, Bhavik Anil,Leong, Chi Leng,Boutelle, Martyn G.,Cragg, Peter J.
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- Application of stimuli-responsive FRET behavior toward cyanide detection in a photo-switchable [2]pseudorotaxane polymer containing the BODIPY donor and the merocyanine acceptor
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We have developed a supramolecular (close form) [2]pseudorotaxane polymer containing the green-emissive (λem= 523 nm) BODIPY-based pillar[5]arene host and the non-emissive spiropyran (SP)-based cyano guest (close form), which can be converted t
- Gouda, Chinmayananda,Barik, Debashis,Maitra, Chandrima,Liang, Kai-Chieh,Ho, Feng-Cheng,Srinivasadesikan, Venkatesan,Chandran, Sarala,Wu, Shu-Pao,Lin, Ming-Chang,Lin, Hong-Cheu
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- Orthogonal Self-Assembly of a Two-Step Fluorescence-Resonance Energy Transfer System with Improved Photosensitization Efficiency and Photooxidation Activity
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During the past few decades, fabrication of multistep fluorescence-resonance energy transfer (FRET) systems has become one of the most attractive topics within supramolecular chemistry, chemical biology, and materials science. However, it is challenging t
- Jia, Pei-Pei,Xu, Lin,Hu, Yi-Xiong,Li, Wei-Jian,Wang, Xu-Qing,Ling, Qing-Hui,Shi, Xueliang,Yin, Guang-Qiang,Li, Xiaopeng,Sun, Haitao,Jiang, Yanrong,Yang, Hai-Bo
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- Conjugated Macrocycle Polymer Nanoparticles with Alternating Pillarenes and Porphyrins as Struts and Cyclic Nodes
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Conjugated macrocycle polymers (CMPs) integrated using the macrocyclic confinement effect make imposing restrictions feasible on the growth of metal nanoparticles with confined size and high dispersion. For a proof-of-concept exploration, a novel nanoscale CMP is reported, denoted as DMP[5]-TPP-CMP, comprising two representative types of macrocyclic compounds, i.e., pillararene and porphyrin, as alternating strut/node components in the skeleton. With abundant anchoring sites, CMP implanted with Pd nanoparticles (Pd@DMP[5]-TPP-CMP, Pd@CMP for short) is successfully obtained through a simple post-treatment, exhibiting remarkable catalytic activity in Suzuki–Miyaura coupling (SMC) and nitrophenol reduction. The as-prepared Pd@CMP material shows favorable performance in expediting the process of SMC with an appreciable yield even under mild conditions, as well as in facilitating the electron transfer process from borohydride to nitrophenol through metal–hydride complex to produce aminophenol with a very short transformation time of 3 min and superior apparent kinetic rate constant k app of 1.9 × 10?2 s?1, higher than most palladium supports. Significantly, this multifunctional Pd@CMP composite material not only enriches the family of CMPs, but also sheds light on the development of green catalysts with excellent stability and easy recyclability without deactivation.
- Li, Zheng,Li, Xi,Yang, Ying-Wei
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- Inclusion complexes of selected amines with pillar[5]arenes: experimental and molecular dynamics study
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Selected amines were allowed to form inclusion complexes with selected synthesized pillar[5]arenes. Formation of inclusion complexes were confirmed by MALDI–TOF, ESI–MS analyses and 1H NMR spectroscopy. The complexation was supported by molecul
- Al Mamari, Hamad H.,Al Harrasi, Iman,Al Hadhrami, Khulood,Al Lawati, Yousuf,Suliman, Fakhreldin O.
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- Synthesis of pillar[5]arene dimers and their cooperative binding toward some neutral guests
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Three pillar[5]arene dimers, bridged by a flexible aliphatic chain (H1) or a relatively rigid phenylene unit (H2 and H3), were synthesized, with the possible synthetic strategies being discussed. The dimers could significantly enhance the binding affinities toward neutral model substrates in comparison with monomeric 1,4-dimethoxypillar[5]arene (H4) through the cooperative binding of two pillar[5]arene moieties. The molecular binding ability and selectivity are discussed from the viewpoints of the size/shape-fit concept and multiple recognition mechanism.
- Li, Chunju,Han, Kang,Li, Jian,Zhang, Haichang,Ma, Junwei,Shu, Xiaoyan,Chen, Zhenxia,Weng, Linhong,Jia, Xueshun
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- Syntheses of copillar[5]arenes by Co-oligomerization of different monomers
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(Equation Presented). Three copillar[5]arenes, pillar[5]arenes containing different repeating units, were successfully prepared by co-oligomerization of different monomers. It was demonstrated that the yields of pillararenes could be improved by using hydroquinone diethers with appropriate aliphatic chain lengths. Pseudorotaxane-type threaded structures were obtained in the solid state by the inclusion of an n-hexane molecule into the cavity of either a homopillar[5]arene, a pillar[5]arene containing only one repeating unit, or a copillar[5]arene.
- Zhang, Zibin,Xia, Binyuan,Han, Chengyou,Yu, Yihua,Huang, Feihe
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- Synthesis and host-guest properties of pillar[6]arenes
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A facile method for the synthesis of pillar[6]arenes was developed. A series of pillar[6]arenes were prepared with FeCl3 as catalyst and chloroform as solvent at room temperature in moderate yields (30%-40%). Their host-guest properties with n-cetyltrimethyl ammonium bromide were investigated by 1 HNMR. The results showed that high selectivity in the host-guest relationship became apparent between pillar[6]arenes and pillar[5]arenes based on the different size of the inner cavity.
- Tao, Hongqi,Cao, Derong,Liu, Luzhi,Kou, Yuhui,Wang, Lingyun,Meier, Herbert
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- One-pot synthesis of pillar[n]arenes catalyzed by a minimum amount of TfOH and a solution-phase mechanistic study
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A practical and effective trifluoromethanesulfonic acid (TfOH)-catalyzed cyclooligomerization strategy was developed for the synthesis of functionalized pillar[n]arenes and copillar[5]arenes from 1,4-dialkoxybenzenes with paraformaldehyde under mild reaction conditions, and the reaction mechanism of solution-phase catalytic synthesis of pillararenes was investigated by room-temperature X-band ESR spectroscopy, mass spectroscopy, NMR and control experiments, suggesting a free radical process initially and a Friedel-Crafts alkylation process during the consequent coupling and ring-closure stage.
- Wang, Kai,Tan, Li-Li,Chen, Dai-Xiong,Song, Nan,Xi, Guan,Zhang, Sean Xiao-An,Li, Chunju,Yang, Ying-Wei
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- A highly efficient artificial light-harvesting system with two-step sequential energy transfer based on supramolecular self-assembly
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A highly efficient artificial light-harvesting system (ALHS) in the aqueous phase with a two-step sequential energy transfer process has been successfully constructed based on the host-guest interaction between a water-soluble pillar[5]arene (WP5) and a b
- Han, Tingting,Hu, Xiao-Yu,Jiao, Jianmin,Qian, Weirui,Shi, Yukun,Sun, Guangping,Wang, Leyong
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- A pillar[5]arene-based 3D network polymer for rapid removal of organic micropollutants from water
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Organic micropollutants are posing great challenges to global water resources, especially for non-biodegradable synthetic chemicals. In this study, a carboxyl-derived pillar[5]arene (P5) and p-phenylenediamine (PPD) were crosslinked to produce a 3D network polymer, P5-P, for the adsorption and removal of organic micropollutants from water. This 3D network polymer sequesters a variety of organic micropollutants in water with rapid adsorption rates and large uptake amounts, much greater than those of conventional activated carbon. Especially, this polymer demonstrates superior adsorption performance for fluorescein sodium and methyl orange and it can be fully regenerated multiple times by a mild washing procedure. The structure of this 3D network polymer and its adsorption mechanisms have been confirmed by solid-state nuclear magnetic resonance (SSNMR). The excellent pollutant removal ability demonstrates the promise of the pillar[5]arene-based 3D network polymer for rapid waste-water treatment.
- Shi, Bingbing,Guan, Hanxi,Shangguan, Liqing,Wang, Hu,Xia, Danyu,Kong, Xueqian,Huang, Feihe
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- para-bridged symmetrical pillar[5]arenes: Their Lewis acid catalyzed synthesis and host-guest property
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Condensation of 1,4-dimethoxybenzene (DMB) with paraformaldehyde in the presence of BF3·O(C2H5)2 gave novel para-bridged pentacyclic pillar DMB (DMpillar[5]arene). Moreover, para-bridged pentacyclic hydroquinone (pillar[5]arene) was prepared. Pillar[5]arene formed 1:1 host-guest complexes with dialkyl viologen and alkyl pyridinium derivatives. However, pillar[5]arene did not form complexes with the diadamantyl viologen derivative since a bulky adamantyl group was unable to thread the cavity of pillar[5]arene. Copyright
- Ogoshi, Tomoki,Kanai, Suguru,Fujinami, Shuhei,Yamagishi, Tada-Aki,Nakamoto, Yoshiaki
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- A supramolecular nanoprodrug based on a boronate ester linked curcumin complexing with water-soluble pillar[5]arene for synergistic chemotherapies
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A supramolecular nanoprodrug based on the host-guest complexation of water-soluble pillar[5]arene (WP5) and a boronate ester linked curcumin (Cur) was constructed, which had dual-responsiveness towards pH and GSH, allowing the drug to be selectively released in hepatoma cells. In vitro studies revealed that the Dox-loaded WP5G-Cur nanoprodrug achieved co-delivery of Dox/Cur. The anti-cancer efficiency could be enhanced through synergistic chemotherapies of Dox/Cur.
- Chao, Shuang,Lv, Xiukai,Ma, Ning,Pei, Yuxin,Pei, Zhichao,Shen, Ziyan,Zhang, Feiyu
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- Pyridine-Conjugated Pillar[5]arene: From Molecular Crystals of Blue Luminescence to Red-Emissive Coordination Nanocrystals
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A luminescent molecular crystal (P5bipy) and a Cu(I)-coordinated luminescent nanocrystal (Cu(I)-P5bipy) have been prepared concurrently using one conjugated pillar[5]arene macrocycle via a facile supramolecular self-assembling strategy. The molecular crystal shows enhanced luminescence compared with unmodified pillar[5]arene, attributed to its conjugated structure and staggered packing mode, while the coordination nanocrystal exhibits well-defined crystalline structures and long-lifetime triplet state emission along with pronounced solvochromic features.
- Lou, Xin-Yue,Yang, Ying-Wei
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- Cascade catalytic nanoplatform constructed by laterally-functionalized pillar[5]arenes for antibacterial chemodynamic therapy
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Chemodynamic therapy (CDT) is an emerging approach to overcome bacterial infections that can efficiently convert hydrogen peroxide (H2O2) to generate highly toxic hydroxyl radicals (˙OH). How to develop safe and effective CDT-based strategies is in high demand but challenging. Herein, a cascade catalytic nanoplatform (GOx-NCs/Fe3O4) was designed by absorbing glucose oxidase (GOx) onto the surface of covalent-assembled polymer capsules (NCs) encapsulating Fe3O4nanoparticles. With the presence of glucose, GOx could effectively catalyze it to produce H2O2and result in a decrease in pH value, both of which would assist the subsequent Fenton reaction. Encapsulated Fe3O4nanoparticles would subsequently trigger H2O2to produce ˙OH, which could make antibacterial CDT come true. More importantly, the polymer capsules exhibited little to no cytotoxicity towards mammalian cells, which might provide more opportunities and potential to apply in other fields.
- Hou, Jinxing,Li, Fei,Liu, Junqiu,Luo, Quan,Sun, Hongcheng,Xu, Jiayun,Yu, Shuangjiang,Zang, Mingsong
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- Pillar[5]arene-BODIPY host-guest interaction induced fluorescence enhancement and lysosomes targetable bioimaging in dilute solution
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Supramolecular complex by pillar[5]arenes and BODIPY dyad through host-guest interaction was developed and showed aggregation induced emission (AIE) property. 1H NMR titration and 2D NOESY NMR measurements were performed to evidence the host-gu
- Chen, Jia-Yi,Li, Xing-Yu,Wu, Jie,Wu, Yongquan,Kuang, Gui-Chao
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- Hybrid [ n ]arenes through thermodynamically driven macrocyclization reactions
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Hybrid [n]arenes, the class of medium-sized macrocyclic compounds consisting of different alkoxybenzene units, were obtained by a simple, one-pot, direct condensation of two different alkoxybenzenes with formaldehyde catalyzed by a Br?nsted acid (trifluoroacetic acid). We have shown that, under Br?nsted acid catalysis, this reaction is reversible and therefore governed by the relative stability of the products. The main macrocyclic products are hybrid [n]arenes consisting of four alkoxybenzene units of [2 + 2] or [3 + 1] stoichiometry. However, an unusual [3 + 2] hybrid macrocycle was also obtained as a main product of the condensation between 1,4-dimethoxybenzene, 1,3,5-trimethoxybenzene, and formaldehyde. The stability of the hybrid products and the reversibility of the reaction were further confirmed by a scrambling experiment, involving pillar[5]arene and per-O-methylated resorcin[4]arene. The scrambling experiment has given hybrid macrocycles in yields comparable with those obtained in condensation reactions. NMR spectra and X-ray structures of hybrid [n]arenes indicate that 1,2- and 1,3-dialkoxybenzene units are flexible parts of macrocyclic rings. However, the 1,4-dialkoxybenzene units present considerable steric hindrance, resulting in the formation of isomers and inherently chiral macrocycles due to inhibited rotation. The recognition properties toward various organic cations were also determined. Highly selective recognition of the N-methylpyridinium cation was observed for the [3 + 2] hybrid macrocycle.
- Boinski, Tomasz,Cieszkowski, Artur,Rosa, Baromiej,Szumna, Agnieszka
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- Photolysis of a bola-type supra-amphiphile promoted by water-soluble pillar[5]arene-induced assembly
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A bola-type supra-amphiphile assembled from a water-soluble pillar[5]arene host (WP5) and a rod-coil guest molecule (G) containing a photoactive 9,10-dialkoxyanthracene group was successfully constructed, which could further assemble into a monolayer supramolecular vesicle. Interestingly, the photodecomposition rate of G was remarkably promoted after its aggregation with WP5, accompanied by the disassembly of the formed supramolecular vesicle, especially with the coassembly of a photosensitizer eosin Y, which has potential applications in phototherapy.
- Guo, Shuwen,Liu, Xin,Yao, Chenhao,Lu, Chengxi,Chen, Qingxin,Hu, Xiao-Yu,Wang, Leyong
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- Facile, rapid, and high-yield synthesis of pillar[5]arene from commercially available reagents and its X-ray crystal structure
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We monitored the progress of formation of dimethoxypillar[5]arene by size-exclusion chromatography. Surprisingly, the cyclization reaction completely finished in just 3 min. By improving the reaction conditions and purification process, we successfully obtained dimethoxypillar[5]arene in a short time and in high yield (71%) from commercially available reagents. By improving the deprotection reaction of the methoxy moieties, pillar[5]arene was isolated quantitatively. Single crystal X-ray analysis confirmed the structure of pillar[5]arene in the solid state.
- Ogoshi, Tomoki,Aoki, Takamichi,Kitajima, Keisuke,Fujinami, Shuhei,Yamagishi, Tada-Aki,Nakamoto, Yoshiaki
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- Viologen-mediated assembly of and sensing with carboxylatopillar[5]arene- modified gold nanoparticles
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Carboxylatopillar[5]arene (CP[5]A), a new water-soluble macrocyclic synthetic receptor, has been employed as a stabilizing ligand for in situ preparation of gold nanoparticles (AuNPs) to gain new insights into supramolecular host-AuNP interactions. CP[5]A-modified AuNPs with good dispersion and narrow size distributions (3.1 ± 0.5 nm) were successfully produced in aqueous solution, suggesting a green synthetic pathway for the application of AuNPs in biological systems. Supramolecular self-assembly of CP[5]A-modified AuNPs mediated by suitable guest molecules was also investigated, indicating that the new hybrid material is useful for sensing and detection of the herbicide paraquat.
- Li, Hui,Chen, Dai-Xiong,Sun, Yu-Long,Zheng, Yue Bing,Tan, Li-Li,Weiss, Paul S.,Yang, Ying-Wei
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- Pillarquinone-Based Porous Polymer for a Highly-Efficient Heterogeneous Organometallic Catalysis
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Pillar[5]quinone (PQ[5])-based porous polymer has been prepared by crosslinking and oxidating pillar[5]arene (PA[5]). Quinone was used as an unorthodox ligand to load palladium-catalyst with high loading ratio (up to 12.0 wt %). Catalyst was well dispersed on solid support in the form of Pd2+-specie. Pd-loaded PQ[5]-based heterogeneous catalyst was highly efficient for Suzuki-coupling reactions (22- to 1485-fold higher than Pd/C based on turnover frequency). It was superior compared to other existing heterogeneous catalysts for selective catalytic reaction. This heterogeneous catalyst had good thermo-stability, and could be reused and recycled.
- Lan, Shang,Yang, Xuan,Shi, Kejia,Fan, Rong,Ma, Da
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- Electrochemical behavior of pillar[5]arene on glassy carbon electrode and its interaction with Cu2+ and Ag+ ions
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The electrochemical behavior of pillar[5]arene (P[5]A) and of its reaction products with Ag+ and Cu2+ ions has been investigated using cyclic voltammetry, optical methods and transmission electron microscopy (TEM). Stepwise oxidation of hydroquinone units of P[5]A molecule is guided by self-assembling and acid-base interactions. From one to three hydroquinone units per P[5]A molecule are oxidized depending on the measurement conditions. The deposition of P[5]A on glassy carbon electrode (GCE) partially blocks the electron transduction. Interfering influence of dissolved oxygen can be partially eliminated by the use of carbon black as immobilization matrix. The reaction of P[5]A with silver ions results in formation of most stable form with three benzoquinone and two hydroquinone units stabilized by quinhydrone-like structure. The Ag nanoparticles formed in the reaction retain electron transduction with the electrode due to involvement of shielding P[5]A molecules. Similar reaction with Cu2+ ions does not lead to stable products because of the formation of Cu2O particles detected by UV spectroscopy and TEM. Possible analytical applications of the materials obtained were proved by electrocatalytic reduction of hydrogen peroxide and mediated oxidation of thiocholine as model systems. In both cases, high sensitivity and wide range of the concentration determined were shown.
- Smolko,Shurpik,Shamagsumova,Porfireva,Evtugyn,Yakimova,Stoikov,Evtugyn
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- A hybrid porous material from a pillar[5]arene and a poly(ionic liquid): Selective adsorption of n-alkylene diols
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A macro-/mesoporous polymeric network with densely incorporated pillar[5]arene functionality was prepared via ionic complexation between a polymerized ionic liquid and carboxylated pillar[5]arene. It retained the solution-state host-guest property of the pillar[5]arene and was successfully applied as a selective absorbent for n-alklyene diols. The Royal Society of Chemistry 2014.
- Zhang, Zibin,Zhao, Qiang,Yuan, Jiayin,Antonietti, Markus,Huang, Feihe
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- Through-Space Communication Effects on the Electrochemical Reduction of Partially Oxidized Pillar[5]arenes Containing Variable Numbers of Quinone Units
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The electrochemical reduction of five partially oxidized pillar[5]arenes containing variable numbers (1-5) of quinone units was investigated in acetonitrile and dichloromethane solutions. The cathodic voltammetric behavior of all the macrocyclic compounds
- Avei, Mehdi Rashvand,Kaifer, Angel E.
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- Restricting shuttling in bis(imidazolium)…pillar[5]arene rotaxanes using metal coordination
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Metal coordination to a series of bis (imidazolium)…pillar[5]arene [2]rotaxanes through the formation of metal-carbene bonds facilitates a new strategy to restrict the shuttling motion in [2]rotaxanes. Whereas the pillar[5]arene macrocycle rapidly shuttle
- Langer, Philipp,Yang, Lixu,Pfeiffer, Constance R.,Lewis, William,Champness, Neil R.
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- Pillar[5]arene Based Pseudo[1]rotaxane Operating as Acid/Base-Controllable Two State Molecular Shuttle
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A ethylene glycol bridged pyridine and pillar[5]arene based mechanically selflocked pseudo[1]rotaxane was constructed successfully. The structure and selflocked conformation of pseudo[1]rotaxane were confirmed by 1H, 2D NMR spectrum and HR-ESI-MS. It was found that in dilute solution the pseudo[1]rotaxane could be operated as an acid/base-controllable two state molecular shuttle while In concentrated solution, the pseudo[1]rotaxane existed as a dimer and could be operated from shrinking state to extension state.
- Zhao, Qian,Chen, Yuan,Sun, Baobao,Qian, Cheng,Cheng, Ming,Jiang, Juli,Lin, Chen,Wang, Leyong
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- Potential 129Xe-NMR biosensors based on secondary and tertiary complexes of a water-soluble pillar[5]arene derivative
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We report on the first secondary and tertiary complexes of the pillar[5]arene derivative 3 with xenon in water. We show that the chemical shift of the encapsulated xenon provides information on the type of the formed complex suggesting that 3 has the potential to be used as a platform for NMR biosensors.
- Adiri, Tal,Marciano, Daniele,Cohen, Yoram
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- Mono-mercapto-functionalized pillar[5]arene: a host-guest complexation accelerated reversible redox dimerization
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A mono-mercapto-functionalized pillar[5]arene and its dimer, capable of being reversibly interconverted,were successfully synthesized.Fascinatingly, a faster reversible redox conversion involving a dynamic disulfide bond was observed between their host-guest complexes compared with the hosts themselves.
- Cheng, Chuyang,Jin, Jianbing,Miao, Jiarong
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- Pillar[n]arene-based porous polymers for rapid pollutant removal from water
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Pillar[n]arene (PA[n], n = 5 or 6) based porous polymers (P-PAP[n]s) were prepared by crosslinking PA[n]s and used as adsorbents to remove pollutants from water via host-guest interactions. These new materials are adsorbents for a wide range of contaminants with fast removal kinetics. The adsorption is especially efficient for herbicide paraquat with very fast uptake kinetics (k2 = 33.3 g mg?1 min?1, at least 5 times faster than that of any existing adsorbent for paraquat) and a high removal capacity (209 mg g?1).
- Lan, Shang,Zhan, Shuaijun,Ding, Jiaming,Ma, Jiaqi,Ma, Da
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- Water-soluble pillar[5]arenes: A new class of plant growth regulators
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It is highly valuable to develop bifunctional chemical fertilizers that can both regulate plant growth and reduce the toxicity of pesticides. Here we report three water-soluble pillar[5]arenes WP5-1, WP5-2 and WP5-3 established as efficient plant growth regulators for wheat to efficiently improve the development of buds and roots in the seedling cultivation stage. Moreover, as macrocyclic hosts for the poisoning herbicide paraquat, WP5-2 and WP5-3 can also be employed to reduce its toxicity based on host–guest interactions, as confirmed by cell viability experiments towards HEK 293 and Raw 264.4 cell lines.
- Shangguan, Liqing,Shi, Bingbing,Chen, Qi,Li, Yang,Zhu, Huangtianzhi,Liu, Yuezhou,Yao, Hong,Huang
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- A dimethoxypillar[5]arene/azastilbene host-guest recognition motif and its applications in the fabrication of polypseudorotaxanes
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Pillar[n]arenes, known as the fifth generation of host macrocycles since 2008, have become a popular topic over the past ten years. Until now, the studies of pillar[n]arenes were mainly focused on pillar[5]arenes owing to their easy synthesis and high yields. In particular, 1,4-dimethoxypillar[5]arene (DMP5), which shows a simple structure, efficient synthesis and high yield, has played important roles in the construction of various advanced supramolecular architectures. However, DMP5 has only displayed host-guest binding properties towards some guests. Therefore, the investigation of the host-guest chemistry of DMP5 should be able to greatly promote the development of pillararene chemistry. Herein, a photosensitive azastilbene derivative was chosen as a neutral guest to study the host-guest binding and stimuli-responsive behavior with DMP5. In addition, the binding behavior of DMP5 towards a series of analogous neutral guest molecules was investigated to study the driving forces of the host-guest interaction between DMP5 and the azastilbene guest. Moreover, the [2]pseudorotaxane based on DMP5 and the azastilbene guest was used to construct a polypseudorotaxane via metal coordination.
- Wang, Liyun,Xia, Danyu,Chao, Jianbin,Zhang, Junjie,Wei, Xuehong,Wang, Pi
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- Complexation of neutral 1,4-dihalobutanes with simple pillar[5]arenes that is dominated by dispersion forces
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The complexation of neutral 1,4-dihalobutanes with simple pillar[5]arenes was investigated. The results indicate the formation of interpenetrated complexes, where the dispersive interactions dominate the complex stability. Typically, 1,4-diiodobutane disp
- Shu, Xiaoyan,Fan, Jiazeng,Li, Jian,Wang, Xiaoyang,Chen, Wei,Jia, Xueshun,Li, Chunju
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- A facile, moisture-insensitive method for synthesis of pillar[5]arenes - The solvent templation by halogen bonds
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A new, very efficient, and selective preparation method of peralkylated pillar[5]arenes is presented. By replacing typical Lewis acids with trifluoroacetic acid (TFA) we were able to eliminate the need of anhydrous conditions without a loss of effectiveness. The method is highly practical: a) it is moisture-insensitive, b) starting from simple and cheap reagents and reactants, and c) allows for chromatography-free isolation of the products. The results indicate that the interactions with solvent molecules can modulate stability of the products and influence the reaction outcome. Dichloromethane (DCM) and dichloroethane (DCE) are complexed within the cyclopentamer cavity with association constants of 120 M-1 and 600 M-1, respectively (CDCl3). The interactions involve a combination of hydrogen-pi and halogen-pi bonds.
- Boinski, Tomasz,Szumna, Agnieszka
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- Synthesis of pillar[n]arenes (n = 5 and 6) with deep eutectic solvent choline chloride 2FeCl3
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A novel and distinct method of preparing pillar[5]arene and pillar[6]arene with high selectivity and efficiency has been achieved by condensation of 1,4-dialkoxybenzene and paraformaldehyde with the choline chloride (ChCl)/ferric chloride (FeCl3) deep eutectic solvent in CH2Cl2 at room temperature. Under the optimal conditions, the yield of pillar[5]arene and pillar[6]arene is 35% and 53%, respectively. The reaction mechanism is investigated by room-temperature X-band Electron Spin Resonance (ESR), indicating that a free radical takes part in this cyclization reaction and acts as an intermediate. Our research is the first report about the application of DESs in supramolecular macrocyclic host synthesis.
- Cao, Jin,Shang, Yuhan,Qi, Bin,Sun, Xuzhuo,Zhang, Lei,Liu, Huiwen,Zhang, Haibo,Zhou, Xiaohai
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- Pillar[n]MaxQ: A New High Affinity Host Family for Sequestration in Water
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We report the synthesis, X-ray crystal structure, and molecular recognition properties of pillar[n]arene derivative P[6]AS, which we refer to as Pillar[6]MaxQ along with analogues P[5]AS and P[7]AS toward guests 1–18. The ultratight binding affinity of P[5]AS and P[6]AS toward quaternary (di)ammonium ions renders them prime candidates for in vitro and in vivo non-covalent bioconjugation, for imaging and delivery applications, and as in vivo sequestration agents.
- Isaacs, Lyle,Xue, Weijian,Zavalij, Peter Y.
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- Novel binding regioselectivity in the interpenetration of a non-symmetric axle into a non-symmetric pillar[5]arene wheel
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We describe the regioselective complexation of a non-symmetric 5-bromovaleronitrile axle by a non-symmetric pillar[5]arene bearing different alkyl (methyl and pentyl) rims, forming an oriented interpenetrated complex with the directionality of CN@methyl rim and Br@pentyl rim. The Royal Society of Chemistry 2014.
- Shu, Xiaoyan,Chen, Wei,Hou, Dabin,Meng, Qingbin,Zheng, Renlin,Li, Chunju
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- Host-guest interaction of nitroxide radicals with water-soluble pillar[6]arenes
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The host-guest interaction of nitroxide radicals with water-soluble pillar[n]arenes was studied for the first time by electron paramagnetic resonance spectroscopy and NMR spectroscopy. Our results showed that this interaction strongly depended on the 4-su
- Ji, Kaiyun,Liu, Yangping,Rockenbauer, Antal,Song, Yuguang,Wang, Xue
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- Bifunctional supramolecular prodrug vesicles constructed from a camptothecin derivative with a water-soluble pillar[5]arene for cancer diagnosis and therapy
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Bifunctional supramolecular prodrug vesicles have been successfully constructed based on the complexation between a glutathione (GSH)-responsive prodrug guest molecule (DNS-CPT) and a water-soluble pillar[5]arene (WP5) for cancer diagnosis and therapy. Un
- Sun, Guangping,He, Zhimei,Hao, Min,Xu, Zuqiang,Hu, Xiao-Yu,Zhu, Jun-Jie,Wang, Leyong
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- Cation templated improved synthesis of pillar[6]arenes
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Improved high yield syntheses of the larger pillar[6]arenes (P[6]) bearing different alkoxy substituents through cation templated syntheses using a series of small organic and organometallic cations is reported. Yields of P[6] up to 38% and P[6]/P[5] ratios as high as 5:1 were achieved.
- Da Pian,De Lucchi,Strukul,Fabris,Scarso
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- Synthesis of pillar[7]arene
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The first synthesis of pillar[7]arene is reported with two methods. Method A: the FeCl3-catalyzed condensation reaction of 1,4-dimethoxybenzene (1) with paraformaldehyde in CHCl3 gave dimethoxypillar[7]arene (3). Method B: the p-toluenesulfonic acid catalyzed condensation reaction of 2,5-bis(benzyloxymethyl)-1,4-dimethoxybenzene (2) in CH2Cl 2 gave compound 3. Demethylation of 3 with BBr3 gave pillar[7]arene (4). The pillar[7]arene might be a perspective macrocyclic host in host-guest chemistry.
- Chen, Yu,Tao, Hong Qi,Kou, Yu Hui,Meier, Herbert,Fu, Jian Long,Cao, De Rong
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- Efficient inhibition of human papillomavirus 16 L1 pentamer formation by a carboxylatopillarene and a p-sulfonatocalixarene
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Pillarenes and calixarenes showed obvious inhibition of HPV16 L1 pentamer formation via their selective binding to Arg and Lys residues at the monomer interface, which was reversible after the release of cyclic arenes. Pillarenes are more effective than calixarenes in terms of the inhibition efficiency, attributing to the different kinetics and binding affinity. The Royal Society of Chemistry 2014.
- Zheng, Dong-Dong,Fu, Ding-Yi,Wu, Yuqing,Sun, Yu-Long,Tan, Li-Li,Zhou, Ting,Ma, Shi-Qi,Zha, Xiao,Yang, Ying-Wei
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Read Online
- Pillar[5]arene based conjugated macrocycle polymers with unique photocatalytic selectivity
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The development of heterogeneous catalysts with substrate shape, size or electronic constitution selectivity is a huge challenge in photocatalysis. Reported herein is a host-guest interaction strategy to endow photocatalysts with special selectivity. By a
- Qiang, Hui,Chen, Tao,Wang, Zhuo,Li, Wenqian,Guo, Yunzhe,Yang, Jie,Jia, Xueshun,Yang, Hui,Hu, Weibo,Wen, Ke
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- Synthesis of pillar[5]arenes with a PH-containing fragment
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The reactions of phosphorus(III) chloride and 2-chloro-1,3,2-dioxaphospholane with monohydroxypillar[5]arene afforded for the first time the corresponding PH-phosphonates. It was found that the newly formed P–O(Ar) bond is characterized by considerably reduced reactivity, which was rationalized by essential shielding of the phosphorus atom by the pillar[5]arene macrocycle. The pillar[5]arene scaffold stabilizes the highly reactive PIII–Cl fragment, so that the formation of macrocyclic dichlorophosphite can be detected under normal conditions.
- Nazarova,Makhmutova,Stoikov
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- Cavity-promotion by pillar[5]arenes expedites organic photoredox-catalysed reductive dehalogenations
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The efficiency of the photo-induced electron transfer in photoredox catalysis is limited by the diffusional collision of the excited catalyst and the substrate. We herein present cavity-bound photoredox catalysts, which preassociate the substrates, leading to significantly shortened reaction times. A pillar[5]arene serves as the cavity and phenothiazine as a catalyst in the reductive dehalogenation of aliphatic bromides as a proof of concept reaction.
- Schmidt, Maximilian,Esser, Birgit
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supporting information
p. 9582 - 9585
(2021/09/28)
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- Molecular recognition of methamphetamine by carboxylatopillar[5]arene: Drug-dependent complexation stoichiometry and insights into medical applications
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The molecular recognition of the carboxylatopillar[5]arene on methamphetamine showed interconversion between H2:G ? H:G stoichiometries with dependence on drug concentration. The study simulated conditions of severe metabolic acidosis (pH 7.00)
- Silveira, Eduardo V.,Wanderlind, Eduardo H.,Masson, Andrieli K.,Cordeiro, Pamella S.,Nascimento, Vanessa,Affeldt, Ricardo F.,Micke, Gustavo A.
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supporting information
p. 2701 - 2704
(2020/03/04)
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- A color-tunable fluorescent pillararene coordination polymer for efficient pollutant detection
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A dicarboxylatopillar[5]arene (DCP5)-based coordination polymer, namely DCP5-EuxTby, with color-tunable emission and capable of nitroaromatic pollutant detection, has been designed and fabricated via a typical metal-ligand coordination approach. Due to its rigid skeleton and electron-rich cavity, DCP5 plays an important role in this multi-color framework, not only as a linker but also as a blue-color fluorescence donor. Intriguingly, the fluorescent color of DCP5-EuxTby can be tuned from green to red simply by mediating the molar ratio of Eu3+ : Tb3+ in the functional system. More importantly, a white-color emitting system, that is, DCP5-Eu1Tb3, is discovered when the ratio of Eu3+ : Tb3+ is 1 : 3, and the white-light emissive DCP5-Eu1Tb3 exhibits good detection performance toward nitroaromatic pollutants in a wide application field. We envision that this work will open a new avenue for the exploration of synthetic macrocycle-based new materials in the construction of new fluorescent sensors and detectors for environmental sustainability and bio-related fields.
- Li, Xiang-Shuai,Li, Yong-Fu,Wu, Jia-Rui,Lou, Xin-Yue,Han, Junyou,Qin, Jianchun,Yang, Ying-Wei
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supporting information
p. 3651 - 3657
(2020/02/26)
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- PH-GSH dual-responsiveness nano curcumin prodrug loading system
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The invention discloses a pH-GSH dual-responsiveness nano curcumin prodrug loading system. A water-soluble column [5] arene with pH responsiveness is used as a main body molecule; a disulfide bond with GSH responsiveness and a pyridinium modified phenylboronic acid derivative are used as guest molecules; curcumin and the phenylboronic acid derivative form a boron ester bond with pH stimulus response, and the boron ester bond is modified on a guest molecule; amphiphilic curcumin prodrug molecules are formed through host-guest complexation, then the amphiphilic curcumin prodrug molecules are self-assembled in an aqueous solution to form nano particles by utilizing hydrophilic and hydrophobic effects, and the pH-GSH double-responsiveness nano curcumin prodrug system is obtained. The pH-GSH dual-responsiveness nano curcumin prodrug loading system can be applied to transportation of anti-cancer drugs to achieve the purpose of drug combination, solves problems of single drug use and single stimulus response in a nano drug delivery system, meets the development requirements of the current society, and has good application and development prospects.
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Paragraph 0045-0048
(2020/09/13)
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- Pillar aromatic hydrocarbon and pillar aromatic hydrocarbo-like compound with aggregation-induced emission effect as well as preparation method and application thereof
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The invention provides a pillar aromatic hydrocarbon and pillar aromatic hydrocarbon-like compound with an aggregation-induced emission effect as well as a preparation method and application thereof.The pillar aromatic hydrocarbon and the pillar aromatic
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Paragraph 0087-0090
(2020/12/30)
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- [2]Rotaxane End-Capping Synthesis by Click Michael-Type Addition to the Vinyl Sulfonyl Group
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We report the application of the click Michael-type addition reaction to vinyl sulfone or vinyl sulfonate groups in the synthesis of rotaxanes through the threading-and-capping method. This methodology has proven to be efficient and versatile as it allowed the preparation of rotaxanes using template approaches based on different noncovalent interactions (i.e., donor-acceptor π–π interactions or hydrogen bonding) in yields of generally 60–80 % and up to 91 % aided by the mild conditions required (room temperature or 0 °C and a mild base such as Et3N or 4-(N,N-dimethylamino)pyridine (DMAP)). Furthermore, the use of vinyl sulfonate moieties, which are suitable motifs for coupling-and-decoupling (CAD) chemistry, implies another advantage because it allows the controlled chemical disassembly of the rotaxanes into their components through nucleophilic substitution of the sulfonates resulting from the capping step with a thiol under mild conditions (Cs2CO3 and room temperature).
- David, Arthur H. G.,García-Cerezo, Pablo,Campa?a, Araceli G.,Santoyo-González, Francisco,Blanco, Victor
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supporting information
p. 6170 - 6179
(2019/04/08)
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- PEPTIDE-ATTACHED PILLAR[5]ARENE FOR HIGHLY PERMEABLE AND SELECTIVE ARTIFICIAL WATER CHANNEL, AND ITS SYNTHESIS AND CHARACTERIZATION
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According to the present disclosure, there is provided for a method of synthesis and isolation of peptide-attached (pS)- and (pR)-pillar[5]arenes. The peptide-attached (pR)-pillar[5]arenes can form a single-molecular channel with nanotubular structure for water transport. The synthesis method of developing peptide-attached (pR)-pillar[5]arene for highly permeable and selective water channel is discussed herein, and includes incorporating peptide-attached (pR)-pillar[5]arene into a liposomal membrane, measuring the water permeability of peptide-attached (pR)-pillar[5]arene by stopped-flow light scattering experiment, determining the single-channel water permeability by circular dichroism and UV-vis techniques, calculating activation energies by measurement of the water permeability at different temperatures, and evaluating the relative solute rejection by employing different solutes as osmolytes.
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Paragraph 00133; 00135; 00136
(2019/10/15)
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- Functionalized column aromatic hydrocarbon derivative and preparation method thereof
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The invention discloses a functionalized column aromatic hydrocarbon derivative and a preparation method thereof. The functionalized column aromatic hydrocarbon derivative comprises an X unit, a Y unit and a Z unit, wherein the X unit is shown in a formula (I), the Y unit is shown in a formula (II), the Z unit is shown in a formula (III), and the six-membered rings of the X unit, the Y unit and the Z unit all have two para-position substituents and four unsubstituted positions; the formulas are as shown in the specification, each unit is connected through CH2 groups to form a ring-shaped structure, and each unit is connected with the other two adjacent units in a para-position manner at an unsubstituted position; and the formed ring-shaped structure is the functionalized column aromatic hydrocarbon derivative. Cyano groups, carboxyl groups and oxime are directly connected to the benzene ring monomer of the column aromatic hydrocarbon, so that the method for functionalizing the column aromatic hydrocarbon is expanded; and the connected groups can effectively change the electronic environment of the column aromatic hydrocarbon rings, so that the functionalized column aromatic hydrocarbon derivative has wide application in the fields of supramolecular host-guest identification and the like.
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Paragraph 0114; 0116; 0117
(2019/03/25)
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- Study on the fluorescence modulation of benzimidazole through energy transfer and photochromic isomerization in the pillar(5)arene-based supermolecular system
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The polymeric supramolecular host (H1) containing fluorophore benzimidazole and pillar[5]arene was designed and prepared. H1 formed the linear and cross-linked supramolecules with the designed guest molecules, naphthalimide-containing G1 and naphthopyran-
- Wei, Yingjuan,Wang, Ningning,Li, Donglin,Wang, Guang,He, Yi
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- Supramolecular enantiomeric and structural differentiation of amino acid derivatives with achiral pillar[5]arene homologs
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Complexation of achiral pillar[5]arenes with chiral amines induced strong circular dichroism (CD) signals. The CD responses differed drastically depending on the nature of the amino acid guest, and they significantly varied and part of them even inverted, upon increasing the length of the alkyl chains of the pillar[5]arenes guests. Accordingly, this tactic allowed for the unprecedented simultaneous enantiomeric and structural differentiation of α-amino esters with homologous molecular hosts.
- Ji, Jiecheng,Li, Yizhou,Xiao, Chao,Cheng, Guo,Luo, Kui,Gong, Qiyong,Zhou, Dayang,Chruma, Jason J.,Wu, Wanhua,Yang, Cheng
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supporting information
p. 161 - 164
(2019/12/30)
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- Constitutional isomers of brominated-functionalized copillar[5]arenes: Synthesis, characterization, and crystal structures
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We herein report the preparation of constitutional isomers of brominated-functionalized pillar[5]arenes via co-condensation of 1,4-bis(2-bromoethoxy)benzene and 1,4-dimethoxybenzene. The structures of the obtained isomers were then established using singl
- Al-Azemi, Talal F.,Vinodh, Mickey,Alipour, Fatemeh H.,Mohamod, Abdirahman A.
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p. 13814 - 13819
(2019/05/16)
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- Pillar5arenes as Supramolecular Hosts in Aqueous Biphasic Rhodium-Catalyzed Hydroformylation of Long Alkyl-chain Alkenes
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Aqueous biphasic catalysis continues to attract strong interest, especially when very hydrophobic substrates are concerned. Indeed, their insolubility in water strongly limit their transformation by water-soluble organometallic catalysts. To improve contacts between the substrate-containing organic phase and the catalyst-containing phase, one of the best solutions consists in using interfacial additives capable of supramolecularly recognize the substrate and/or the catalyst. In the present study, modified pillar5arenes are considered as interfacial additives and their performance is assessed in Rh-catalyzed hydroformylation of long alkyl-chain alkenes (higher olefins). Pillar5arenes substituted by carboxylate functions and methyl groups P5 A-(Me)10-x-(CH2COOMe)x are compared to pillar5arenes substituted by polyethylene glycol (PEG) chains (P5 A-(Me)5-(PEG)5 and P5 A-(PEG)10). Utilization of P5 A-(Me)10-x-(CH2COOMe)x leads to high conversion and regioselectivity (linear/branched aldehyde ratio) in Rh-catalyzed hydroformylation of 1-decene and 1-hexadecene. Compared with other interfacial additives such as modified cyclodextrins, the studied pillar5arenes show lower chemo-selectivity, similar catalytic activity and higher regioselectivity.
- Benatmane, Missipssa,Cousin, Kévin,Laggoune, Nérimel,Menuel, Stéphane,Monflier, Eric,Woisel, Patrice,Hapiot, Frédéric,Potier, Jonathan
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p. 5306 - 5313
(2018/11/10)
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- Monomolecular resin based on 1,4-disubstituted pillar[5]arene derivative, and positive photoresist and application thereof
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The invention discloses a monomolecular resin based on a 1,4-disubstituted pillar[5]arene derivative. The monomolecular resin has a structure as shown in a formula which is described the specification. In the formula, the substituents R and R' are hydrogen atoms or acid-sensitive substituents respectively, and R and R' cannot be hydrogen atoms at the same time. The monomolecular resin based on the1,4-disubstituted pillar[5]arene derivative is simple in synthesis process and high in yield; intermediates and the product are easy to separate and purify during synthesis; the monomolecular resin is suitable for industrial production; the monomolecular resin can effectively inhibit the crystallization of molecules and are easy for film formation; and the monomolecular resin has the characteristics of good rigid structure, high glass transition temperature and good thermal stability and can well meet the requirements of photolithography process. The monomolecular resin of the invention can be used as a photoresist main body material and cooperated with other additives for preparation of a positive photoresist. Photoresist films of different thicknesses can be prepared through spin coating of the photoresist.
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Paragraph 0038; 0039; 0040; 0041
(2018/09/08)
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- Competition of cation-π and exo-wall π-π Interactions: A novel approach to achieve ultrasensitive response
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A novel approach to achieve ultrasensitive response was successfully developed by rationally introducing the competition between cation-π and exo-wall π-π interactions into a pillar[5]arene-based supramolecular organogel (P5N-OG). Interestingly, the P5N-O
- Zhang, You-Ming,Zhu, Wei,Qu, Wen-Juan,Zhong, Kai-Peng,Chen, Xiao-Peng,Yao, Hong,Wei, Tai-Bao,Lin, Qi
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supporting information
p. 4549 - 4552
(2018/05/14)
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- Dual-Stimuli-Responsive Fluorescent Supramolecular Polymer Based on a Diselenium-Bridged Pillar[5]arene Dimer and an AIE-Active Tetraphenylethylene Guest
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We report a new strategy to construct a multi-stimuli-responsive fluorescent supramolecular polymer by the strong host-guest interactions between a diselenium bond-bridged pillar[5]arene dimer and an AIE-active tetraphenylethylene (TPE)-containing neutral
- Wang, Yan,Lv, Ming-Zhe,Song, Nan,Liu, Zeng-Jie,Wang, Chunyu,Yang, Ying-Wei
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p. 5759 - 5766
(2017/08/14)
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- Preparation method and application of functionalized column [5] arene trimer
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The invention discloses a preparation method and application of functionalized column [5] arene trimer. The functionalized column [5] arene trimer is well synergistic in host-guest interaction, the preparation method of the functionalized column [5] arene trimer is a chemical synthetic process, and a product is obtained by subjecting p-methoxybenzene and paraformaldehyde as starting materials to catalytic and synthetic reactions. The materials of the product are simple and easily obtainable, the method is simple to perform, and reaction conditions are mild. In cationic molecular recognition for linear diamine hydrochlorides and branched triamine hydrochlorides, it is possible for significant charge transfer to occur, very characteristic absorption peaks are shown in ultraviolet, and the trimer is applicable to ultraviolet detection.
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Paragraph 0009; 0023
(2017/03/14)
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- Preparation method and application of benzoic acid column [5] arene ester derivatives
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The invention discloses a preparation method and application of benzoic acid column [5] arene ester derivatives. The derivatives include column [5] arene unimer, dimer and trimer. The preparation method includes: adopting a chemical synthesis method; using para metoxybenzene and paraformaldehyde as starting raw materials; obtaining products through catalysis and synthesis. The raw materials are simple and easy to get, the preparation method is simple to operate and mild in reaction condition. Compared with the circumstance that conventional single-column [5] arene cannot be in complexation with footballene C60 due to the fact that a cavity is too small, the circumstance that column [5] arene trimer compounds can be in complexation with footballene C60 through synergism of multiple cavities to form host-guest complexes is found for the first time.
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Paragraph 0031; 0032; 0033
(2017/03/21)
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- The template effect of solvents on high yield synthesis, co-cyclization of pillar[6]arenes and interconversion between pillar[5]- and pillar[6]arenes
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We have synthesized a pillar[6]arene in high yield and a co-pillar[6]arene using chlorocyclohexane as a solvent. the Partner Organisations 2014.
- Ogoshi, Tomoki,Ueshima, Naosuke,Akutsu, Tomohiro,Yamafuji, Daiki,Furuta, Takuya,Sakakibara, Fumiyasu,Yamagishi, Tada-Aki
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p. 5774 - 5777
(2014/05/20)
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