PHOTOCHROMIC MATERIAL CONTAINING DIARYLETHENE COMPOUND AND OPTICAL FUNCTION ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a photochromic material containing a diarylethene compound having a switching function, stability under visible light with irreproducible decoloration and colored states by heating at a specific temperature, and to provide an optical function element containing the same.;SOLUTION: A diarylethene compound represented by the following formula (I), where X is a sulfur atom (S) or a sulfonyl group (SO₂), Z is a hydrogen atom (H) or a fluorine atom (F), R and R' are same or different and an alkyl group having 1 to 6 carbon atoms, or a cycloalkyl group having 3 to 7 carbon atoms and at least one of them is a secondary alkyl group, is provided.;COPYRIGHT: (C)2014,JPO&INPIT