Preprints of symposium on liquid crystals
Online ISSN : 2432-9959
Print ISSN : 1880-3539
ISSN-L : 1880-3539
23rd Symposium on Liquid Crystals
Session ID : 2AB05
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Photoregulation of the Low-Molecular-Weight Liquid-Crystals by the Photo-Aligned Liquid-Crystalline Polymer
*Nobuhiro KAWATSUKIHirofumi TALKATSUKATohei YAMAMOTOHiroshi Ono
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Abstract
We investigated the alignment behavior of low-molecular-weight (LMW) liquid crystal (LC) on photoreactive side-chain liquid-crystalline polymer (SLCP) films induced by linearly polarized (LP) UV light. The effect of the LP-photoreaction conditions and the spacer length between the biphenyl and cinnamoyl groups were examined. The alignment direction of LMW-LC was parallel to the electric vector of the incident LP-UV light in the beginning of the photoreaction and changed to perpendicular when the most of the cirmamoyl group had reacted. These are the consequence of the difference of the interaction between LMW-LC and the biphenyl group or the photoreacted cinnamoyl group.
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© 1997 The Japanese Liquid Crystal Society
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