Irreversible visual sensing of humidity using a cholesteric liquid crystal |
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| Authors: | Saha Abhijit Tanaka Yoko Han Yang Bastiaansen Cees M W Broer Dirk J Sijbesma Rint P |
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| Institution: | Laboratory for Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands. |
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| Abstract: | Irreversible optical sensing of humidity by a doped cholesteric liquid crystal is achieved by using a thin film of nematic host E7 with a binaphthylorthosilicate ester as dopant (guest). The film changes its color from blue (to green to orange to red) to colorless when exposed to humidity as the dopant is hydrolyzed. |
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