Synthesis and photoresponsive properties of two liquid crystalline polymers bearing branched azobenzene-containing side chains

文献情報

出版日 2013-07-09

DOI 10.1039/C3PY00757J

インパクトファクター 5.582

著者

Yu Zhu, Xiaogong Wang

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要旨

We synthesized two photoresponsive liquid crystalline polymers bearing branched azobenzene-containing side-chains. The side-chain liquid crystal polymers (SCLCPs) were designed to contain two and three azobenzene moieties in each monomeric unit, which were attached to the backbones via a linkage of biphenylene and flexible spacers. The SCLCPs were synthesized by radical polymerization of corresponding methacrylate-based monomers. The polymers were characterized by FT-IR, 1H NMR, UV-vis, GPC and small angle X-ray scattering (SAXS). Both polymers formed the smectic-A mesophase in the LC states, whilst the polymer containing three azobenzene-containing branches in each repeat unit showed a high order mesophase in the lower temperature range. The polymers exhibited trans–cis photoisomerization and photoinduced orientation under light irradiation at suitable wavelengths.

掲載誌

Polymer Chemistry

CiteScore: 8.6

自己引用率: 7.3%

年間論文数: 457

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Synthesis and photoresponsive properties of two liquid crystalline polymers bearing branched azobenzene-containing side chains

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