4181-21-9Relevant articles and documents
A highly luminescent chiral tetrahedral Eu4L4(L′)4 cage: Chirality induction, chirality memory, and circularly polarized luminescence
Zhou, Yanyan,Li, Hongfeng,Zhu, Tianyu,Gao, Ting,Yan, Pengfei
, p. 19634 - 19643 (2019)
Chiral lanthanide cages with circularly polarized luminescence (CPL) properties have found potential application in enantioselective guest recognition and sensing. However, it still remains a big challenge to develop a simple and robust method for the dia
Homochiral crystallization of metal-organic silver frameworks: Asymmetric [3+2] cycloaddition of an azomethine ylide
Jing, Xu,He, Cheng,Dong, Dapeng,Yang, Linlin,Duan, Chunying
, p. 10127 - 10131,5 (2012)
Enantiomeric silver-based MOFs were obtained through a homochiral crystallization of cinchonine and cinchonidine enantiomers as chiral adducts with silver. These MOFs exhibited excellent catalytic activity for asymmetric [3+2] cycloaddition (see scheme),
Multi-Component Metal-Organic Frameworks Significantly Boost Visible-Light-Driven Hydrogen Production Coupled with Selective Organic Oxidation
Duan, Chunying,He, Cheng,Jing, Xu,Li, Hanning,Yang, Yang
supporting information, p. 1237 - 1244 (2021/04/09)
Visible-light-driven hydrogen production coupled with selective organic oxidation has attracted increasing attention, as it not only provides clean and renewable energy, but also utilizes the other half reaction to achieve some value-added organic chemicals. Metal-organic frameworks based on metal clusters and organic ligands self-assembly give a perspective on the formation of multifunctional heterogeneous photocatalyst to significantly boost visible-light photocatalytic activities under mild conditions. By incorporating two types of photoactive units, tricarboxytriphenylamine (H3TCA) and tris(4-(pyridinyl)phenyl)amine (NPy3), into a single metal-organic frameworks, a multi-component MOF Co-MIX was obtained. With the redox active metal centers enabling the photoexcitation reduction of protons into hydrogen and the photogenerated holes promoting considerable oxidation of substrates, the resulting Co-MIX exhibits high catalytic activity for the photocatalytic hydrogen production coupled with selective oxidation of benzylamine or 1,2,3,4-tetrahydroisoquinoline. Importantly, the photocatalytic experiments of single-component Co-TCA and Co-NPy3 verified the positive synergistic effects on stability and photocatalytic ability of the two ligands (H3TCA and NPy3) in one single MOF, revealing that the multi-component strategy is very important for the efficient charge separation and excellent photocatalytic activity of the catalyst.
A cerium-based MOFzyme with multi-enzyme-like activity for the disruption and inhibition of fungal recolonization
Abdelhamid, Hani Nasser,Mahmoud, Ghada Abd-Elmonsef,Sharmouk, Walid
, p. 7548 - 7556 (2020/09/18)
A cerium-based metal-organic framework (Ce-MOF, denoted as AU-1) was synthesized using a solvothermal method by employing 4,4′,4′′-nitrilotribenzoic acid (H3NTB) as the linker and cerium clusters as the metal center. The material was considered as a MOFzy
Cadmium-based metal-organic framework material as well as preparation method and application thereof
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Paragraph 0039; 0040, (2019/02/25)
The invention discloses a cadmium-based metal-organic framework material as well as a preparation method and application thereof. Metal ions Cd are used as nodes, 4,4',4''-tricarboxytriphenylamineis used as an organic linking main ligand, 4,4'-azopyri
2-carbonyl-5-aryl-1, 3, 4- -oxadiazole sterically hindered luminescent material and preparation method thereof
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Paragraph 0053-0054, (2019/01/16)
The invention provides a 2-carbonyl-5-aryl-1, 3, 4- -oxadiazole sterically hindered luminescent material and a preparation method thereof. The material is characterized in that 5-aryl-1, 3, 4- -oxadiazole and spiro-arene or azacyclo are connected through
Novel metal-organic framework with tunable fluorescence property: Supramolecular signaling platform for polynitrophenolics
Venkateswarulu,Pramanik, Avijit,Koner, Rik Rani
supporting information, p. 6348 - 6352 (2015/04/14)
With the aid of a rotational C3-symmetric tricarboxytriphenylamine based ligand, a new Cd-MOF was synthesized and characterized by various spectroscopic techniques as well as by single-crystal X-ray diffraction analysis. The structural investig
Molecular design for the highly-sensitive piezochromic fluorophores with tri-armed framework containing triphenyl-quinoline moiety
Hsiao, Tai-Shen,Chen, Tai-Lin,Chien, Wei-Lun,Hong, Jin-Long
, p. 161 - 167 (2014/01/17)
Two tri-armed piezochromic fluorescent molecules of tris(4-(4- phenylquinolin-2-yl)phenyl)amine (TPA-3Qu) and tris(4-(6-(9H-carbazol-9-yl)-4- phenylquinolin-2-yl)phenyl)amine (TPA-3QuCz) were prepared and found to exhibit keen fluorescence responses towar
Bipolar luminescent materials containing pyrimidine terminals: Synthesis, photophysical properties and a theoretical study
Weng, Jiena,Mei, Qunbo,Fan, Quli,Ling, Qidan,Tong, Bihai,Huang, Wei
, p. 21877 - 21887 (2013/11/06)
A new series of 4-monosubstituted pyrimidine bipolar materials containing a carbazole (PM1-PM2) or a triphenylamine (PM3-PM5) moiety as the electron donor have been synthesized by a ZnCl2-catalyzed three-component coupling reaction. These 4-monosubstituted pyrimidine compounds were characterized by UV-vis and fluorescence spectroscopy, cyclic voltammetry, as well as density functional theory (DFT) calculations. It was intriguing to find that these 4-monosubstituted pyrimidine compounds exhibited bright fluorescence with excellent quantum yields (~0.53-0.93) in the blue region. PM1 and PM2 had a lower LUMO than that of CBP (4,4-di(9H-carbazol-9-yl)biphenyl), meaning that both of them had better electron injection and transfer abilities. The variation tendencies of energy levels and absorption spectra obtained from DFT calculations agreed well with those from experiment. Other electronic properties including ionization potentials (IP), electronic affinities (EA), and reorganization energies (λhole and λ electron) have been theoretically studied as well. These electronic properties could be tuned by introducing a different number of pyrimdin-4-yl moieties onto to the donor fragments. The incorporation of pyrimdin-4-yl can significantly decrease the λelectron and then improve the electron-accepting and hole-electron charge balance abilities. The combined theoretical and experimental studies offer insights into the nature of bipolar molecules containing 4-monosubstituted pyrimidine moieties, and provided a fertile ground for the design of appropriate ambipolar materials for optoelectronic applications. The Royal Society of Chemistry 2013.
Blue-light-emitting multifunctional triphenylamine-centered starburst quinolines: Synthesis, electrochemical and photophysical properties
Jiang, Peng,Zhao, Dong-Dong,Yang, Xiao-Li,Zhu, Xiao-Lin,Chang, Jin,Zhu, Hong-Jun
scheme or table, p. 4704 - 4711 (2012/08/08)
A series of triphenylamine-centered starburst quinolines (1a-1g) have been synthesized by Friedlaender condensation of the 4,4′,4′′- triacetyltriphenylamine (2) and 2-aminophenyl ketones (3a-3g) in the presence of catalytic sulfuric acid and characterized well. They are thermally robust with high glass transition temperatures (above 176.4 °C) and decomposition temperatures (above 406 °C). These compounds emit blue fluorescence with λEmmax ranging from 433 to 446 nm in dilute toluene solution and 461 to 502 nm in the solid-state and have a relatively high efficiency (Φu = 0.98-0.57). 1a-1g have estimated ionization potentials (IP) of 4.54 to 6.45 eV which are significantly near or higher than those of well-known electron transport materials (ETMs), including tris(8- hydroxyquinoline)aluminium (Alq3) (IP = 5.7-5.9 eV), and previously reported oligoquinolines (IP = 5.53-5.81 eV). Quantum chemical calculations using DFT B3LYP/6-31G* showed the highest occupied molecular orbital (HOMO) of -5.05 to -4.81 eV, which is close to the work function of indium tin oxide (ITO). These results demonstrate the potential of 1a-1g as hole-transporting/light-emitting/electron-transport materials and the host-materials of a dopant for hole-injecting for applications in organic light-emitting devices.