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Stereoselective Copolymerization of Unprotected Polar and Nonpolar Styrenes by an Yttrium Precursor: Control of Polar-Group Distribution and Mechanism
Styrene underwent unprecedented coordination–insertion copolymerization with naked polar monomers (ortho-/meta-/para-methoxystyrene) in the presence of a pyridyl methylene fluorenyl yttrium catalyst. High activity (1.26×106 g·molY-1 h-1) and excellent syndioselectivity were observed, and high-molecular-weight copolymers (24.6×104 gmol-1) were obtained. The insertion rate...
http://www.polymer.cn//ss/dongmeicui/publicationsshow_11955.html |
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Stereoselective Copolymerization of Unprotected Polar and Nonpolar Stryenes by an Yttrium Precursor:Control of Polar-Group Distribution and Mechanism.
Styrene underwent unprecedented coordinationinsertion copolymerization with naked polar monomers (ortho-/ meta-/ para-methoxystyrene) in the presence of a pyridyl methylene fluorenyl yttrium catalyst. High activity (1.26 X 10(6) gmol(Y)(- 1)h (-1)) and excellent syndioselectivity were observed, and high-molecular-weight copolymers (24.6 X 10(4) gmol (-1)) were obtained. The insertion rate of the...
http://www.polymer.cn//ss/dongmeicui/publicationsshow_11863.html |
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33. Pendant-group cross-linked highly sulfonated co-polyimides for proton exchange membranes
A series of pendant-group cross-linkable sulfonatecl co-polyimides (SPIs) with high degree of sulfonation were synthesized via a one-pot poly-condensation reaction from 1,3-bis(2-trifluoromethyl-4-aminophenoxy)-5-(2,3,5,6-tetrafluoro-4-vinylphenoxy)benzene (6FTFPB), 1,4-bis(4-amino-2-trifluoromethylphenoxy)benzene (6FAPB), 4,4''''''''-diamindodiphenyl ether-2,2''''''''-disulfonic acid (ODADS) and ...
http://www.polymer.cn//ss/guanshaowei/publicationsshow_10378.html |
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Tuning the Structure of Metal Phosphonate Using Uncoordinating Methyl group: Syntheses, Structures and Properties of a Series of Metal Diphosphonates
Eight new transition metal diphosphonates, namely, [Mn(H2L)(H2O)2][(H2O)2] (1), [Co(H2O)6][H2L][(H2O)2] (2), [Co(H2O)6][(H3L)2][(H2O)2] (3), [Ni(H2O)6][H2L][(H2O)2] (4), [Cu(H2L)][(H2O)2] (5), [Zn(H2O)6][(H3L)2][(H2O)2] (6), [Zn(H2L)(H2O)2] (7) and [Cd(H2L)(H2O)2] (8), have been synthesized hydrothermally from 2,5-dimethyl-1,4-phenylenediphosphonic acid (H4L) and thoroughly characterized using EA,...
http://www.polymer.cn//ss/zhaoxuebo/publicationsshow_9857.html |
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Protecting group and pore-discriminating adsorption properties of a hydrophilic-hydrophobic metal-organic framework,
Formed by linking metals or metal clusters through organic linkers, metal–organic frameworks are a class of solids with structural and chemical properties that mark them out as candidates for many emerging gas storage, separation, catalysis and biomedical applications. Important features of these materials include their high porosity and their flexibility in response to chemical or physical stimu...
http://www.polymer.cn//ss/zhaoxuebo/publicationsshow_9815.html |
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Two Aromatic Rings Coupled a Sulfur-Containing Group to Favor Protein Electron Transfer by Instantaneous Formations of π∴S:π?π:S∴π or π∴π:S?π:π∴S Five-Electron Bindings
The cooperative interactions among two aromatic rings with a S-containing group are described, which may participate in electron hole transport in proteins. Ab initio calculations reveal the possibility for the formations of the π∴S:π?π:S∴π and π∴π:S?π:π∴S five-electron bindings in the corresponding microsurrounding structures in proteins, both facilitating electron hole transport as e...
http://www.polymer.cn//ss/chenxiaohua/publicationsshow_9098.html |
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A new thermo-, pH-, and CO2-responsive homopolymer of poly[N-[2-(diethylamino)ethyl]acrylamide]: is the diethylamino group underestimated?
in press.
http://www.polymer.cn//ss/zhangwangqing/publicationsshow_8770.html |
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[2015][J. Phys. Chem. C, 2015, 119 (45), 25243–25251]End-Group Engineering of Low-Bandgap Compounds for High-Detectivity Solution-Processed Small-Molecule Photodetectors
Several π-conjugated compounds based on diketopyrrolopyrrole and trithiophene substituted with different end groups (alkyl, alkyloxy, and alkylthio) were designed and synthesized for investigation of the material properties and photodetector performance brought by subtle changes in the end groups. Among all, compound 4 with hexylthio groups exhibits the most red-shifted absorption, strongest mo...
http://www.polymer.cn//ss/qiaowenqiang/publicationsshow_8722.html |
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Intramolecular charge-transfer emission from conjugated polymer nanoparticles: the terminal group effect on electronic and optical properties
Tuning fluorescence properties and frontier orbital energy levels of hyperbranched conjugated polymer nanoparticles (HCPN-NMe) by the facile introduction of terminal N,N-dimethylaniline groups via an intramolecular charge transfer (ICT) process between the nanoparticle core and the terminal groups was demonstrated for the first time. Compared with the similar hyperbranched conjugated pol...
http://www.polymer.cn//ss/tong_hui/publicationsshow_8368.html |
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Water-Soluble Polymers Bearing Phosphorylcholine Group and Other Zwitterionic Groups for Carrying DNA Derivatives
Water-soluble polymers with equal positive and negative charges in the same monomer unit, such as the phosphorylcholine group and other zwitterionic groups, exhibit promising potential in gene delivery with appreciable transfection efficiency, compared with the traditional poly(ethylene glycol)-based polycation–gene complexes. These zwitterionic polymers with various archite...
http://www.polymer.cn//ss/xiaojielin/publicationsshow_8283.html |
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