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

Content Provider	Semantic Scholar
Author	Wang, Xiaogong
Copyright Year	2013
Abstract	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.
Starting Page	5108
Ending Page	5118
Page Count	11
File Format	PDF HTM / HTML
DOI	10.1039/C3PY00757J
Volume Number	4
Alternate Webpage(s)	http://www.rsc.org/suppdata/py/c3/c3py00757j/c3py00757j.pdf
Alternate Webpage(s)	https://doi.org/10.1039/C3PY00757J
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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