Title: Synthesis and Research of Photochromism Based on Side-Polyimide Containing Azobenzene Group
Abstract: The side polyimide containing azobenzene group was synthesized with photochromism property from 2,2-Bis(3-amino-4-hydroxyyphenyl) hexafluoropropane(6FHP),pyromellitic dianhydride(PMDA) and dispersed red 1(DR1).The chemical structure and thermal properties of polyimide were characterized using Fourier transform infrared(FT-IR),ultraviolet-visible(UV-Vis) spectroscopy,differential scanning calorimeter(DSC),and thermal gravimetric analysis(TGA).The DSC and TGA exhibited the glass transition temperature(Tg) and the decomposition temperature(Td) of polymer were 298 ℃ and 365 ℃,respectively.These results showed that the material had excellent thermal stability.The UV-induced trans/ cis photoisomerization and the thermal reflex-isomerization behavior were investigated for the polymer in solution and in film.The results indicate that the polymer solution and polymer film can undergo photochromism after a given UV wavelength (365 nm) photoinduction.This showed that the polyimide could be used to carry out perpetuity photoinduced birefringence and recording.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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