Thermally Reversible Photochromic Systems. Photochromism of a Dipyrrolylperfluorocyclopentene

• Kingo Uchida

  Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku UniversitySeta, Otsu

• Toyokazu Matsuoka

  Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku UniversitySeta, Otsu

• Koichi Sayo

  Mitsuboshi Belting Ltd.4-1-21 Hamazoe-dori, Nagata-ku, Kobe

• Masahiro Iwamoto

  Mitsuboshi Belting Ltd.4-1-21 Hamazoe-dori, Nagata-ku, Kobe

• Shigehiko Hayashi

  Mitsuboshi Belting Ltd.4-1-21 Hamazoe-dori, Nagata-ku, Kobe

• Masahiro Irie

  Departement of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University and CREST, Japan Science and Technology Corporation (JST)6-10-1 Hakozaki, Fukuoka

Abstract

A diarylethene having 2-cyanopyrrole rings turned blue upon UV irradiation in ethyl acetate. The colored form was unstable and returned to the colorless open-ring form with a half-life time of 37 s at room temperature. The activation energy of the thermal fading was obtained to be 32.5 kJ / mol, which is less than half of that of spironaphthoxazine.

Journal

• Chemistry Letters

  Chemistry Letters 28 (8), 835-836, 1999-08-01

  Oxford University Press (OUP)

Keywords

• General Chemistry

Details

• CRID: 1360846644039853184
• NII Article ID: 10004703626
• NII Book ID: AA00603318
• DOI: 10.1246/cl.1999.835
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/28/8/835/56076258/cl.1999.835.pdf
• Data Source:
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  • CiNii Articles