Searching for photochromic liquid crystals spironaphthoxazine substituted with a mesogenic group

Leah Shragina, Frida Buchholtz, Shlomo Yitzchaik, Valeri Krongauz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

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.

Original languageAmerican English
Pages (from-to)643-655
Number of pages13
JournalLiquid Crystals
Volume7
Issue number5
DOIs
StatePublished - May 1990
Externally publishedYes

Bibliographical note

Funding Information:
We thank Dr. Judith Ratner for assistance with spectral measurements and Prof. Ernst Fischer for stimulating discussions. Support from the German-Israeli Foundation for Scientific Research and Development is gratefully acknowledged.

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