Photochromic thin film and its preparation

Abstract

Abstract PURPOSE:To obtain a photochromic thin film suitable for a recording material of high contrast and high C/N, by introducing an amorphous form of a specific, thermally stable 1,2-diarylethene into a thine film, and irradiating the film with light. CONSTITUTION:An amorphous form of thermally stable 1,2-dialkylethene derivative of formula I or II (X is N-R; Y is cyano, carboxylic anhydride; R, R1, R2 are alkyl; R3 is methyl) is introduced into a thin film in an amount of more than 20pts.wt., then vacuum metallization or spin coating is carried out, as the film is irradiated with exciting light such as low-pressure gas plasma to give the subject thin film.

Inventors

• 👤 Akira Morinaka
• 👤 Takuji Yoshida
• 👤 Norihiro Funakoshi
• 👤 Masahiro Irie

Bibliographic Details