Single??crystalline photochromism of diarylethene dimers bridged by a spiro structure

S Kobatake, S Kuma, M Irie

Index: Kobatake, Seiya; Kuma, Shunpei; Irie, Masahiro Journal of Physical Organic Chemistry, 2007 , vol. 20, # 11 p. 960 - 967

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Citation Number: 22

Abstract

Abstract New types of diarylethene dimers bridged by a spiro structure were synthesized. One of their dimers formed three kinds of polymorphic forms by recrystallization from different solvents: hexane (1a-α), acetone (1a-β), and acetonitrile (1a-γ). In crystals of 1a-α and 1a-β the molecules are packed in solvent-free crystal structures, whereas crystal 1a-γ includes acetonitrile molecules in the crystal. The difference of significant photochromic ...