Searching for photochromic liquid crystals Spironaphthoxazine substituted with a mesogenic group |
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| Authors: | Leah Shragina Frida Buchholtz Shlomo Yitzchaik Valeri Krongauz |
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| Institution: |
a Department of Structural Chemistry, The Weizmann Institute of Science, Rehovot, Israel |
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| Abstract: | A number of photochromic spiropyrans and spirooxazines containing mesogenic groups were synthesized. Only one of them, spiro-indoline-naphthoxazine with mesogenic substituent, 4-(4-heptylbenzoyloxy)benzoyloxy in 5-position, revealed mesomorphic properties. Its phase behaviour, photochromism and alignment in the electric field was investigated. A structure of the mesophase is discussed. |
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