A Novel Photochromic Film by Oxidation Polymerization of a Bisbenzothienylethene with Phenol Groups


  • We thank Mr. Mitsuhiko Morimoto and Mr. Koshiro Yamakawa of Perkin Elmer Japan Co., Ltd. Osaka Branch Office for the use of Perkin Elmer Spectrum Spotlight 300. This work was supported by ACT of Japan Science and Technology Cooperation (JST), Sumitomo Foundation, and a Grant-in-Aid for Scientific Research (C) No. 12 640 567 from the Ministry of Education, Science, Sports, and Culture.


A photochromic polymer film is prepared by the oxidation polymerization of a diarylethene. The photoreactive conformation is maintained. A pattern can be written on the film using visible light, and upon irradiation with IR light, a non-destructive read-out of the patterned image is carried out. The structural changes resulting from illumination are shown in the Scheme.