The effects of azo-oxadiazole-based bent-shaped molecules on the temperature range and the light-responsive performance of blue phase liquid crystal |
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| Authors: | Yong-Bo Yu Zi-Mo Jiang Zhao-Feng Yu Lei Ren Ying Lu |
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| Institution: | 1. Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, P.R. China;2. Experimental School Affiliated to Haidian Teachers Training College, Beijing, P.R. China |
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| Abstract: | A series of light-responsive azo-oxadiazole-based bent-shaped molecules was synthesised and characterised. Their effects as dopants on the blue phases (BPs) range of the chiral nematic liquid crystal (N*LC) matrix and light-responsive properties including the photo-inducing change of UV absorption properties, photo-adjusting the BP structure as well as the temperature range were investigated. It was found that the azo-oxadiazole-based bent-shaped molecules with branched terminal had better miscibility in LC host than the molecules with straight terminal, and that increasing the length of rigid core of bent-shaped molecules will greatly improve the effect of widening the BP temperature range. |
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| Keywords: | Blue phase liquid crystal azobenzene bent-shaped molecules light sensitive electro-optical performances |
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