Title: Investigations of the Process of Photoinduced Isomerization on Azobenzene
Abstract: A photochromism-testing system for azo dyes which has the characteristics of visualization,real-time and high accuracy,was estabilshed.Photochromism process of methyl red(MR) and MR/polymethyl methacrylate(PMMA) film were studied by using this system.And it was found that the effect of strengthening laser energy is similar to that of prolonging the excitation time,and the photochromism process of MR strongly depends on steric hindrance around azobenzene molecule.There actually are two parts in photochromism due to photoinduced isomerization of azobenzene:a fast one mainly accompanied by photoinduced isomerization and a slow one in which azobenzene molecules parallel laser polarization direction and the oriented state can remain a long time in the film of MR/PMMA.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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