Tetrahedron

Synthesis and photochromic reactivity of a diarylethene dimer linked by a phenyl group

S Kobatake, M Irie

Index: Kobatake, Seiya; Irie, Masahiro Tetrahedron, 2003 , vol. 59, # 42 p. 8359 - 8364

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Citation Number: 84

Abstract

A diarylethene dimer linked by a phenyl group was synthesized and the photochromic behavior was examined. Upon irradiation with ultraviolet light (λ= 313 nm), a hexane solution of the diarylethene dimer (1a) turned purple blue. Upon further prolonged irradiation the color changed to blue. The purple–blue and blue colors are due to the formation of a dimer having one open-and one closed-ring forms (1b) and a dimer having two closed- ...