| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
Korea-Japan Joint Symposium: Frontier Molecular Assembly and Liquid Crystal Technology |
| 제목 |
High-HTP macrocyclized pheynyl cinnamate dimer utilizable as photo-responsive chiral dopant for nematic liquid crystals |
| 초록 |
Macrocyclized phenyl cinnamate dimer with a chiral spacer was prepared and its photochemistry was compared with that of the precursor linear dimer and corresponding monomeric compounds. Irradiation of cyclic and linear dimers induced intra-molecular [2+2] photodimerization of cinnamate groups though that of monomer resulted merely in cis-trans isomerization of cinnamate. The rate of photodimerization in the cyclic dimer was 20 times larger than that in linear one. With this photodimerization, the cyclic dimer decreased helical twisting power from 27.5 μm-1 to 6.7 μm-1. We demonstrated that such a macro-cyclized dimer can be a photo-responsive chiral dopant of chiral nematic liquid crystals. |
| 저자 |
Manabu Ito1, Masatoshi Tokita2, Kazuhiro Marumo1, Yoshihiro Harada2, Sungmin Kang1, Koichi Sakajiri2, Junji Watanabe1
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| 소속 |
1Department of Organic and Polymeric Materials, 2Tokyo Institute of Technology |
| 키워드 |
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| E-Mail |
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