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Molecular Crystals and Liquid Crystals Volume 589, 2014 - Issue 1: Proceedings of the Ninth International Conference on Electronic Processes in Organic Materials (ICEPOM-9)
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ELECTRONIC PROCESSES IN ORGANIC MATERIALS: PHYSICS

Polymer Composite Based on DAST Submicron Crystals: Technology and Properties

J. A. Burunkova St.-Petersburg State University of Information Technologies, Mechanics and Optics, St.-Petersburg, Russia
,
I. Yu. Denisyuk St.-Petersburg State University of Information Technologies, Mechanics and Optics, St.-Petersburg, Russia
&
M. I. Fokina St.-Petersburg State University of Information Technologies, Mechanics and Optics, St.-Petersburg, Russia
Pages 178-182 | Published online: 28 Mar 2014
 
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Abstract

We propose a new nonlinear optical material, a polymeric nanocomposite based on DAST submicron crystals (trans-4’-(dimethylamino)-N-methyl-4-stilbazolium tosylate). The method and the preparation conditions for films based on a mixture of polymer solutions and a DAST powder are studied. Polymer matrices of various types, solvent ratio for the pair DAST/polymer, and electrical poling conditions are investigated. Absorption and luminescence spectra and the second harmonic generation have confirmed the creation of red-form DAST nanocrystals in polymer films. The figure of merit for a resulting polymer film is approximately 400 times higher than that for LiNbO3 at a wavelength of 1.32 microns.

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