Photochromism of a Radical Diffusion-Inhibited Hexaarylbiimidazole Derivative with Intense Coloration and Fast Decoloration Performance

Kana Fujita, Sayaka Hatano, Daisuke Kato and Jiro Abe
Department of Chemistry, School of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 229-8558, Japan
Org. Lett., 2008, 10 (14), pp 3105–3108
DOI: 10.1021/ol801135g
Publication Date (Web): June 19, 2008
Copyright © 2008 American Chemical Society

Abstract

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We report the synthesis and the photochromic behavior of a newly designed, photochromic, radical diffusion-inhibited hexaarylbiimidazole (HABI) derivative with markedly improved photochromic performance in coloration and decoloration rates as well as greater optical density in the colored state. The thermal bleaching rate (τ1/2 = 260 ms at 295 K) is the fastest among the reported ones for HABI derivatives.

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History

  • Published In Issue July 17, 2008
  • Article ASAPJune 19, 2008
  • Received: May 21, 2008

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