Accession Number : ADA314648
Title : Synthesis and Optical Properties of Poly4'-Nitrophenyl-3-N-2- (METHACRYLOYLOXY)ETHYLcarbazolyl diazene.
Descriptive Note : Technical rept.,
Corporate Author : QUEEN'S UNIV KINGSTON (ONTARIO) DEPT OF CHEMISTRY
Personal Author(s) : Ho, M. S. ; Barrett, C. ; Paterson, J. ; Esteghamatian, M. ; Natansohn, A.
PDF Url : ADA314648
Report Date : 10 SEP 1996
Pagination or Media Count : 9
Abstract : Poly((4-nitrophenyl)-3-(N-(2-(methacryloyloxy)ethyl)carbazolyl)diazene) was prepared and its photoinduced birefringence, diffraction grating, and photorefractive asymmetric two-beam gain coupling were studied. The monomer was obtained by performing azo coupling in a two-phase water-dichloromethane system in the presence of a phase transfer catalyst. Photoinduced birefringence of up to 0.09 was observed and diffraction efficiencies of up to 25% were obtained, with atomic force microscopy studies revealing that the grating profile exhibited a sinusoidal shape. Asymmetric two-beam coupling is observed. indicating photorefractive properties, but the energy transfer phenomena are more complex, involving also diffraction by the photoinduced gratings. The combination of these three optical properties--photoinduced birefringence, surface gratings, and two-beam coupling--is believed to be unique and may eventually produce an all-optical device built of a single polymer film.
Descriptors : *OPTICAL PROPERTIES, *POLYMERS, COUPLING(INTERACTION), REPRINTS, SYNTHESIS, ENERGY TRANSFER, NONLINEAR OPTICS, PHASE, SURFACES, GRATINGS(SPECTRA), ASYMMETRY, DIFFRACTION, POLYMERIC FILMS, CATALYSTS, AZOBENZENES, PHOTOREFRACTIVE MATERIALS, BEAMS(RADIATION).
Subject Categories : Polymer Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE