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Photosensitive organic/inorganic azopolymer based nanocomposite materials with enhanced photoinduced birefringence

Paper ID Volume ID Publish Year Pages File Format Full-Text
26023 43930 2013 5 PDF Available
Title
Photosensitive organic/inorganic azopolymer based nanocomposite materials with enhanced photoinduced birefringence
Abstract

•Synthesis of novel composite materials by doping ZnO nanoparticles in azopolymers.•Considerable improvement of the photoresponse in these composite materials.•40% increase of the birefringence, reduction of the recording time with 30%.

Different methods have been employed in order to increase the value of the photoinduced anisotropy in azopolymers and to ensure more effective polarization recording. As recently established, doping photopolymers with nanoparticles allows to achieve near 100% net diffraction efficiency in case of conventional holographic recording. For this reason, we have synthesized novel organic/inorganic composite materials by incorporating 50 nm sized ZnO nanoparticles in series of side-chain azopolymers. We obtained a considerable improvement of the photoresponse in these composite materials compared to the non-doped samples – more than 40% increase of the saturated value of the birefringence (up to Δn = 0.08) and also reduction of the recording time with about 30%. We also observed an increase of the photoinduced anisotropy after the exposure has been stopped for one of the investigated polymers. The stability of the photoinduced birefringence in all samples suggests applications of these materials as media for polarization holographic data storage and recording of diffractive optical elements with high efficiency and unique polarization properties.

Keywords
Azobenzene polymers; Nanocomposite materials; Photoinduced birefringence; Polarimetric measurement
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 261, 1 June 2013, Pages 26–30
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us