177991-01-4Relevant articles and documents
Synthesis of Rigid Rod, Trigonal, and Tetrahedral Nucleobase-Terminated Molecules
Cheng, Liang,Jin, Xiao-Yang,Liu, An-Di,Liu, Li,Wu, Chuan-Shuo
, (2022/01/12)
An efficient fragment splicing method for the construction of multiple nucleobase-terminated monomers has been developed. Conformationally fixed rod, trigonal planar and tetrahedral thymine and adenine structures were generated in moderate to good yields,
Synthesis of TEMPO radical decorated hollow porous aromatic frameworks for selective oxidation of alcohols
Shen, Yan-Ming,Xue, Yun,Yan, Mi,Mao, Hui-Ling,Cheng, Hu,Chen, Zhuo,Sui, Zhi-Wei,Zhu, Shao-Bin,Yu, Xiu-Jun,Zhuang, Jin-Liang
, p. 907 - 910 (2021/02/06)
A bottom-up approach was developed to prepare TEMPO radical decorated hollow aromatic frameworks (HPAF-TEMPO) by using TEMPO radical functionalized monomers and SiO2nanospheres as templates. The accessible inner layer, high density of TEMPO sites, and hybrid micro-/mesopores of the HPAF-TEMPO enable the aerobic oxidation of a broad range of alcohols with high efficiency and excellent selectivity.
Preparation of a bispyridine based porous organic polymer as a new platform for Cu(ii) catalyst and its use in heterogeneous olefin epoxidation
Yi, Jigyoung,Ahn, Hye Mi,Yoon, Jong Ho,Kim, Cheal,Lee, Suk Joong
, p. 14067 - 14070 (2018/08/28)
A new type of bispyridine (bpy) incorporated POP was prepared via a cobalt-catalyzed acetylene trimerization. Subsequent immobilization of CuCl2 gave POP-Cu(ii). This new heterogeneous catalyst displayed outstanding olefin oxidation activity compared to its homogeneous analogue, suggesting that the degradation of the homogeneous catalyst was successfully inhibited by site isolation.
Tetrahedral Tetrakis(p-ethynylphenyl) Group IV Compounds in Microporous Polymers: Effect of Tetrel on Porosity
Uptmoor, Andrea C.,Geyer, Florian L.,Rominger, Frank,Freudenberg, Jan,Bunz, Uwe H. F.
, p. 448 - 454 (2018/06/04)
Three Sonogashira–Hagihara polymerization protocols were applied for the synthesis of conjugated microporous polymers (CMPs) by using group IV tetra(p-ethynylphenyl) monomers with 1,4-diiodobenzene or 1,4-dibromobenzene. The optical properties and surface areas of the CMPs were compared and related to the preparation conditions and the geometry of the tetrahedral building block as obtained after X-ray analysis. In each series, surface areas decreased—independently from the chosen parameters of catalyst, base, and solvent—from carbon-centered CMPs (1595 m2 g?1) to silicon-, germanium-, and tin-centered (649 m2 g?1) networks.
Microporous organic polymers involving thiadiazolopyridine for high and selective uptake of greenhouse gases at low pressure
Waseem Hussain, Md.,Bandyopadhyay, Sujoy,Patra, Abhijit
supporting information, p. 10576 - 10579 (2017/09/29)
A new core of [1,2,5]-thiadiazolo-[3,4-c]-pyridine was employed for the fabrication of microporous organic polymers exhibiting a very high CO2 uptake of 5.8 mmol g-1 (25.5 wt%) at 273 K and 1 bar. The presence of CO2-philic active sites and microporosity confer the high uptake and superior selectivity (61) towards CO2 over N2.
Electrochemically active porous organic polymers based on corannulene
Karunathilake, Arosha A.K.,Thompson, Christina M.,Perananthan, Sahila,Ferraris, John P.,Smaldone, Ronald A.
supporting information, p. 12881 - 12884 (2016/11/06)
For the first time, porous organic polymers (POPs) based on the smallest buckybowl, corannulene (BB-POPs) have been synthesized. Three POPs were synthesised via Sonogashira co-polymerization of 1,2,5,6-tetrabromocorannulene and alkyne linkers. BB-POP-3 exhibits the highest surface area (SABET = 560 m2 g-1) and CO2 adsorption of 11.7 wt%, while they retain the redox properties of corannulene.
A Triazole-Containing Metal-Organic Framework as a Highly Effective and Substrate Size-Dependent Catalyst for CO2 Conversion
Li, Pei-Zhou,Wang, Xiao-Jun,Liu, Jia,Lim, Jie Sheng,Zou, Ruqiang,Zhao, Yanli
supporting information, p. 2142 - 2145 (2016/03/05)
A highly porous metal-organic framework (MOF) incorporating both exposed metal sites and nitrogen-rich triazole groups was successfully constructed via solvothermal assembly of a clicked octcarboxylate ligand and Cu(II) ions, which presents a high affinit
Conjugated microporous polymer networks with adjustable microstructures for high CO2 uptake capacity and selectivity
Qin, Long,Xu, Guang-Juan,Yao, Chan,Xu, Yan-Hong
supporting information, p. 12602 - 12605 (2016/10/31)
A series of phenylene-based conjugated microporous polymers (CMPs) of the A6 + Mx (x = 2, 3, 4, 6) type were synthesized. By tuning the monomer length and geometry, the BET surface area of CMPs can be tuned from 571 to 1115 m2/
Tetrahedral rigid core antenna chromophores bearing bay-substituted perylenediimides
Myahkostupov, Mykhaylo,Castellano, Felix N.
, p. 9519 - 9527 (2015/12/01)
Two new representative methane- and adamantane-centered 'antenna' tetramers bearing bay-substituted π-conjugated phenylethynyl-perylenediimides (PDICCPh) as chromophoric subunits, tetrakis-[1-(4-ethynylphenyl)-N,N′-bis(1-hexylheptyl)-perylene-3,4:9,10-tetracarboxylic diimide]-methane (1) and tetrakis-1,3,5,7-[1-(4-ethynylphenyl)-N,N′-bis(1-hexylheptyl)-perylene-3,4:9,10-tetracarboxylic diimide]-adamantane (2), have been synthesized and their structural aspects have been thoroughly investigated by NMR spectroscopy. These PDI tetramers (1 and 2) represent the first successful example of incorporating the bay-substituted phenylethynyl-perylenediimides into the large rigid core tetrahedral frameworks. In these PDI tetramers, dynamic NMR experiments revealed the existence of perylene-centered conformational dynamic equilibrium (ΔG≠=15-17 kcal/mol), the primary cause of the observed spectral broadening in conventional 1H NMR spectra (295 K). In addition, PDI tetramers 1 and 2 were found to possess exceptional (photo)chemical stability, and their corresponding photophysical properties (εmax~180,000; τFL=6.9 ns; ΦFL~60%) make them viable candidates for various photonic applications and are in good agreement with other related multichromophoric PDI-based systems.
Three-dimensional supramolecular polymers driven by rigid tetrahedral building blocks through tetrathiafulvalene radical cation dimerization
Chen, Lan,Zhang, Shao-Chen,Wang, Hui,Zhou, Ya-Ming,Li, Zhan-Ting,Zhang, Dan-Wei
, p. 4778 - 4783 (2014/06/24)
Rigid tetrahedral compounds T1 and T2 that bear four tetrathiafulvalene (TTF) units, which are connected to a tetraphenylmethane core by the ethynylene or amide linker were designed and prepared. Upon one-electron oxidation of the TTF units by Fe(ClO4)3, the resulting TTF+ radical cations stacked intermolecularly to give rise to three-dimensional supramolecular polymers, which were supported by UV-vis spectroscopy, cyclic voltammetry, dynamic light scattering, and scanning electron microscopy.