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Light-Induced Properties in Polyimides Containing Side Azobenzene Groups

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3 Author(s)
Bruma, M. ; Petru Poni Inst. of Macromolecular Chemistrv, Iasi ; Schulz, B. ; Stumpe, J.

A series of new photosensitive polymers have been synthesized by polycondensation reaction of diamines containing azobenzene moieties with hexafluoroisopropylidene diphthalic anhydride or with a diacid chloride containing hexafluoroisopropylidene or dimethylsilane. These amorphous polymers have good solubility in organic solvents and good film forming properties. The irradiation of polymer films with linearly polarized UV-Vis light causes a reorientation of the azobenzene groups by angular-selective E/Z photoisomerization. Thus, optical anisotropy is induced in the initially isotropic films. The photoinduced dichroism in the films has been measured and the results are discussed with respect to the polymer structure

Published in:

International Semiconductor Conference, 2006  (Volume:2 )

Date of Conference:

27-29 Sept. 2006