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

2008; American Chemical Society; Volume: 10; Issue: 14 Linguagem: Inglês

10.1021/ol801135g

1523-7060

Kana Fujita, Sayaka Hatano, Daisuke Kato, Jiro Abe,

Polydiacetylene-based materials and applications

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 (tau1/2 = 260 ms at 295 K) is the fastest among the reported ones for HABI derivatives.