Advanced Materials

Cover image for Vol. 27 Issue 32

August 27, 2002

A new photochromic amorphous molecular material...

based on an azobenzene, BFlAB, has been designed and synthesized. BFlAB readily forms an amorphous glass with a glass-transition temperature of 97 °C and exhibits photochromism in the amorphous solid film as well as in solution. The BFlAB amorphous film forms a surface relief grating with a high diffraction efficiency and a large modulation depth by irradiation with two coherent 488 nm Ar+ laser beams. (Y. Shirota et al., Adv. Mater. 2002, 14, 1157-1160)

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