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Photoinduced chirality in a photochromic stilbene-molecule-doped polymeric liquid crystal film |
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| Authors: | Suk-Won Choi Hideo Takezoe |
| Affiliation: | aDepartment of Display Materials Engineering and Materials Research Center for Information Dispalys, Kyung Hee University, Yongin, Gyeonggi-do 446-701, Republic of Korea;bRegional Innovation Center-Components and Materials for Information Display, Kyung Hee University, Yongin, Gyeonggi-do 446-701, Republic of Korea;cDepartment of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan |
| Abstract: | Photoinduced chirality has been demonstrated in thin films of a main-chain polymeric liquid crystal (PLC) system doped with photochromic stilbene molecules by irradiation with circularly polarized light (CPL). CPL-induced chirality was observed in the intrinsically achiral films which were doped with low-molecular-weight stilbene molecules. It was found that the level of photoinduced chirality of the stilbene-molecule-doped system is comparable to that of the azobenzene-molecule-doped system. Moreover, reversible photo-rewriting property for the stilbene-doped system was also demonstrated by alternating irradiation with right- and left-CPL. |
| Keywords: | Photoinduced chirality Circularly polarized light Circular dichroism Photochromic molecule |
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