Nanostructures and Functionality of functional block copolymer 4 : Synthesis and liquid crystalline properties of block copolymers with azobenzene moiety

Y. Q. TIAN; X. X. KONG; H. YOSHIDA; T. KAWAI; J. ABE; T. IYODA

doi:10.11538/ekitou.2001.0_55

2001 Japanese Liquid Crystal Conference

DOI https://doi.org/10.11538/ekitou.2001.0_55

Conference information

Host: The Japanese Liquid Crystal Society

Name : Japanese Liquid Crystal Conference 2001

Location : [in Japanese]

Date : September 25, 2001 - September 27, 2001

Nanostructures and Functionality of functional block copolymer 4 : Synthesis and liquid crystalline properties of block copolymers with azobenzene moiety

*Y. Q. TIAN, X. X. KONG, H. YOSHIDA, T. KAWAI, J. ABE, T. IYODA

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CONFERENCE PROCEEDINGS FREE ACCESS

Pages 55-56

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Abstract

A new series of liquid crystalline (LC) homopoloymers of poly {11-[4-(4-butylphenylazo)-phenoxyl-undecy] methacrytate} and their block-copolymers with polystyrene were synthesized by using atom transfer radical polymerization (ATRP)method. Thermal propertics were investigated by using DSC, X-ray diffraction and polarized phases. Nanostructures in the range of 20〜40nm were observed by using TEM, SAXS, and AFM. Different chromophore aggregation and photo-chemical behabiors between anncaled block copolymer and homopolymer films were observed, which might be attributed to microphase separation in the block copolymer thim films.

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