Influence of alkylene spacer length on photoinduced orientation of liquid crystalline polymer with N-benzylideneaniline side groups

被引：1
|
作者：
Kozuki, Junji [1 ]
Kondo, Mizuho [1 ]
Sasaki, Tomoyuki [2 ]
Ono, Hiroshi [2 ]
Kawatsuki, Nobuhiro [1 ]
机构：
[1] Univ Hyogo, Grad Sch Engn, Dept Appl Chem, 2167 Shosha, Himeji, Hyogo, Japan
[2] Nagaoka Univ Technol, Dept Elect Engn, 1603 Kamitomioka, Nagaoka, Niigata, Japan
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2017年 / 644卷 / 01期
关键词：
Polymer liquid crystal; N-benzylideneaniline; photoinduced orientation; alkylene spacer; reversible orientation; LINEARLY POLARIZED-LIGHT; AZOBENZENE MOIETIES; REORIENTATION; ALIGNMENT; PHOTOORIENTATION; PHOTOALIGNMENT; CHAIN;
D O I：
10.1080/15421406.2016.1277330
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Liquid crystalline polymers (LCPs) comprised of N-benzylideneaniline (NBA) side groups with different alkylene spacer length (n = 2, 6, and 10) are synthesized and their photoinduced reorientation behavior is investigated. Photoinduced orientation of NBA side groups is observed for all LCP films when exposing to LP-365 nm light, but the out-of-plane motion is simultaneously generated. When the polarization of LP-365 nm light is changed, in-plane optical anisotropy is reversibly changed and the out-of-plane motion is restricted for a P1 (n = 2) film. In contrast, reversibility of the photoinduced in-plane orientation is not effective for P2 (n = 6) and P3 (n = 10) films, where out-of-plane motion of the mesogenic NBA side groups is generated when the total exposure energy increases.
引用
收藏
页码：61 / 68
页数：8
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