Photoinduced orientation of photoresponsive copolymers with N-benzylideneaniline and nonphotoreactive mesogenic side groups

Nobuhiro Kawatsuki, Teppei Washio, Junji Kozuki, Mizuho Kondo, Tomoyuki Sasaki, Hiroshi Ono

doi:10.1016/j.polymer.2014.11.007

Photoinduced orientation of photoresponsive copolymers with N-benzylideneaniline and nonphotoreactive mesogenic side groups

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Abstract The photoinduced reorientation behaviors of liquid crystalline (co)polymethacrylates (LCPs) comprised of N -benzylideneaniline (NBA) and 4-cyanobiphenyl or 4-methoxybiphenyl side groups are compared using linearly polarized (LP) 313 nm and LP 365 nm light. LCP films realize effective cooperative reorientation based on trans-cis-trans photoisomerization of the NBA moieties using LP 365 nm light and stabilization of the orientation structure due to copolymerization. In contrast, photochemical hydrolysis lowers the reorientation efficiency of LCP films when using 313 nm light. Changing the polarization direction of the LP 365 nm light controls the reorientation direction of the LCP films for several cycles, but the in-plane orientation order gradually decreases. Finally, LP 365 nm exposure and subsequent solvent annealing using a photo-cross-linked film achieve a repeatable write-erase-write of the orientation structure of the copolymer film.

Photoinduced orientation of photoresponsive copolymers with N-benzylideneaniline and nonphotoreactive mesogenic side groups

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Photoinduced orientation of photoresponsive copolymers with N-benzylideneaniline and nonphotoreactive mesogenic side groups

この論文をさがす

説明

収録刊行物

被引用文献 (12)*注記

参考文献 (55)*注記

関連プロジェクト

詳細情報 詳細情報について

書き出し

問題の指摘

詳細情報詳細情報について