Fullerene‐based liquid crystalline materials have both the excellent optical and electrical properties of fullerene and the self‐organization and external‐field‐responsive properties of liquid crystals (LCs). Here...
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Fullerene‐based liquid crystalline materials have both the excellent optical and electrical properties of fullerene and the self‐organization and external‐field‐responsive properties of liquid crystals (LCs). Herein, we demonstrate a new family of thermotropic [60]fullerene supramolecular LCs with hierarchical structures. The [60]fullerene dyads undergo self‐organization driven by π–π interactions to form triple‐layer two‐dimensional (2D) fullerene crystals sandwiched between layers of alkyl chains. The lamellar packing of 2D crystals gives rise to the formation of supramolecular LCs. This design strategy should be applicable to other molecules and lead to an enlarged family of 2D crystals and supramolecular liquid crystals.
In this work, copolymerization of two functional monomers, glycidyl methacrylate （GMA） and N,N-dimethylaminoethyl methacrylate （DMAEMA）, was firstly carried out via reversible addition-fragmentation chain transfer...
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In this work, copolymerization of two functional monomers, glycidyl methacrylate （GMA） and N,N-dimethylaminoethyl methacrylate （DMAEMA）, was firstly carried out via reversible addition-fragmentation chain transfer （RAFT） polymerization successfully. The copolymerization kinetics was investigated under the molar ratio of n[GMA＋DMAEMA]o/n[AIBN]o/n[CPDN]o=300/1/3 at 60℃. The copolymerization showed typical ＂living＂ features such as first-order polymerization kinetics, linear increase of molecular weight with monomer conversion and narrow molecular weight distribution. The reactivity ratios of GMA and DMAEMA were calculated by the extended Kelen-Tudos linearization methods. The epoxy group of the copolymer PGMA-co-PDMAEMA remained intact under the conditions of RAFT copolymerization and could easily be post-modified by ethylenedia- mine. Moreover, the modified copolymer could be used as a gene carrier.
作者：
李巍巍徐冬梅张志兰徐颖College of Chemistry
Chemical Engineering and Materials ScienceNational Engineering Laboratory for Modern SilkKey Laboratory of Organic Synthesis of Jiangsu ProvinceJiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationSoochow UniversitySuzhouJiangsu 215123China Testing andAnalysis Center
Soochow UniversitySuzhouJiangsu 215123China
A new series of aromatic azo compounds with one, two, three and five azobenzene units were facilely constructed by dehydrochlorination reaction between p-hydroxyazobenzene, 4,4＇-dihydroxyazobenzene and cyanuric chlor...
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A new series of aromatic azo compounds with one, two, three and five azobenzene units were facilely constructed by dehydrochlorination reaction between p-hydroxyazobenzene, 4,4＇-dihydroxyazobenzene and cyanuric chloride under very mild conditions. Their solubility, crystallinity, thermostability, UV-vis absorption properties and photoisomerization behaviors were carefully examined. When the number of azobenzene unit grew, the solubility of the synthesized compounds basically decreased, the crystallinity of the synthesized compounds firstly rose then dropped, while the thermostability and UV-vis absorption ability of the synthesized compounds greatly im- proved. All the aromatic azo compounds exhibited typical reversible photoisomerization behaviors and were expected to be applied in photosensitive material areas.
作者：
林休休周建华徐冬梅College of Chemistry
Chemical Engineering and Materials ScienceNational Engineering Laboratory for Modern SilkKey Laboratory of Organic Synthesis of Jiangsu ProvinceJiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationSoochow UniversitySuzhouJiangsu 215123China (Suzhou)Zhongke Nanotech Coating Co.LTD
SuzhouJiangsu 215024China
Novel dendritic compounds G1.5（OH）4 and G1.5（OH）8 with peripheral hydroxyl were synthesized under mild conditions from eyanuric chloride, ethylene diamine, ethanolamine and diethanolamine. The products could be se...
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Novel dendritic compounds G1.5（OH）4 and G1.5（OH）8 with peripheral hydroxyl were synthesized under mild conditions from eyanuric chloride, ethylene diamine, ethanolamine and diethanolamine. The products could be separated and purified through dispersion and precipitation in organic solvents with good yields （over 93.0%） and high purity （above 98.0%, HPLC）. The structures of the products were characterized by 1R, MS, 1H NMR and elementary analysis. G1.5（OH）4 and Gl.5（OH）8 could be dissolved in polar solvents such as methanol, water and dimethylsulfoxide. TGA analysis showed that G1.5（OH）4 and G1.5（OH）8 had good thermo stability. The aqueous solutions ofG1.5（OH）4 and G1.5（OH）8 exhibited low surface tension.
Three novel eco-friendly anti-creasing agents have been designed and synthesized. The natural silk fabrics treated with them exhibit higher wrinkle recovery degree, strength retention rate and whiteness than those fin...
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Three novel eco-friendly anti-creasing agents have been designed and synthesized. The natural silk fabrics treated with them exhibit higher wrinkle recovery degree, strength retention rate and whiteness than those finished with 1,2,3,4-butane tetracarboxylic acid （BTCA）. The washing durability of the fabrics treated with the synthesized compounds and BTCA is similar. The chlorine atom, the carboxyl and the s-triazine ring in the synthesized structures and the surface roughness of the silk fabric are all contributive to the imorovement of the crease resistance of silk.
In recent years,biodegradable micelles based on amphiphilic di-or tri-block copolymers have emerged as one of the most promising nano-carrier systems for the controlled release of anticancer drugs.
In recent years,biodegradable micelles based on amphiphilic di-or tri-block copolymers have emerged as one of the most promising nano-carrier systems for the controlled release of anticancer drugs.
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