Photochromic diarylethene for reversible holographic recording

A novel photochromic, diarylethene with 2,5-dihydrothiophene bridging unit la was synthesized, and the photochromic properties of 1 were also investigated. It showed that I exhibited excellent ring-open and ring-closed photochromism with UV/vis light irradiation. Holographic recording was measured by employing the thin film of PMMA-diarylethene 1 as recording media. It showed that six different images were recorded in the same place on the sample with the dimension of 64 mu m x 42 mu m by the intersecting of the object beam and a reference beam with an intensity of 15 mW/cm(2), and the stored information was readout by the attenuated reference beam with an intensity of 0.5 mW/cm(2). In addition, preliminary investigations showed that the material was thermally stable and fatigue resistant. (C) 2007 Elsevier B.V. All rights reserved.

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