DIARYLETHENE DERIVATIVE AND PHOTOCHROMIC THIN FILM

摘要

PROBLEM TO BE SOLVED: To provide both a photochromic compound having good transparency and reversible photochromism and capable of controlling an optical signal with a high efficiency and a photochromic thin film using the same compound.;SOLUTION: This compound is obtained by attaching various substituents, especially a substituent having a sterically bulky structure to a diarylethene derivative reversibly changing colors by irradiation with ultraviolet rays, inhibiting crystallization and enabling random dispersion of the molecule. The photochromic thin film is produced by vapor deposition of the diarylethene derivative, as necessary, together with a polymerizable compound, a polymerization catalyst, an initiator, an antioxidant, a color former, etc., on a substrate such as a lens, a switch, a filter or a quartz.;COPYRIGHT: (C)2003,JPO