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  4. Dielectric and photoorientation studies in semicrystalline melamine monomers and amorphous melamine networks containing azobenzene chromophores
 
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2000
Journal Article
Title

Dielectric and photoorientation studies in semicrystalline melamine monomers and amorphous melamine networks containing azobenzene chromophores

Abstract
We demonstrate optical storage by means of trans-cis isomerization within melamine monomers as well as within the corresponding cross-linked melamine resins using holographic grating experiments. The melamine monomer is chemically linked with a photoaddressable azobenzene group. By thermal treatment the semicrystalline monomers can be converted into the amorphous cross-linked resin. Both the monomer material and the cross-linked resins display a photoinduced trans-cis isomerization of the azo groups, a stable photoorientation under irradiation with linear polarized light, and a stable storage of holographic gratings. The photokinetics in the different environments are found to be similiar but somewhat faster for the amorphous resins.
Author(s)
Stracke, A.
Wendorff, J.H.
Mahler, J.
Rafler, G.
Journal
Macromolecules  
DOI
10.1021/ma991516+
Language
English
Fraunhofer-Institut für Angewandte Polymerforschung IAP  
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