11 October 1999 Bifunctional cyclosiloxanes with photorefractive properties
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Abstract
A series of novel bifunctional cyclosiloxanes with pendant photoconducting and nonlinear-optical moieties was synthesized in a two step procedure. The variation of the spacer length between the siloxane ring and the functional carbazole and azo moieties leads to glass transition temperatures between 33 degrees C and 61 degrees C. These well defined low-molar mass compounds are characterized with regard to their chemical, thermal and electrooptical properties. Compared to commonly used guest-host systems crystallization of the chromophore dopants is diminished due to the covalent bonding of the azo-dye to the cyclosiloxane backbone.
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Christoph Hohle, Peter Strohriegl, Uwe Hofmann, Dietrich Haarer, "Bifunctional cyclosiloxanes with photorefractive properties", Proc. SPIE 3796, Organic Nonlinear Optical Materials, (11 October 1999); doi: 10.1117/12.368295; https://doi.org/10.1117/12.368295
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