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Proceedings Paper

Triphenylamine-based acrylate polymers for photorefractive composite
Author(s): Ha N. Giang; Kenji Kinashi; Wataru Sakai; Naoto Tsutsumi
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Paper Abstract

Two kinds of triphenylamine (TPA)-based acrylate polymer are applied to photorefractive (PR) composite. Poly(4- (diphenylamino)benzyl acrylate) (PDAA) have TPA moiety attached to acrylate main chain. Poly(4-((4- methoxyphenyl)(phenyl)amino)benzyl acrylate) (PMPAA) has a similar structure with a side chain of TPA derivative modified with a methoxy group at para position. PMPAA shows even more readily ionized than PDAA. TPA plasticizer is used instead of the conventional N-ethylcarbazole plasticizer to improve the photoconductivity. A series of composite based on two kinds of acrylate polymer have been prepared and investigated by degenerate four-wave mixing. With the polymer concentration of 55 and 50 wt%, the composite using modified-TPA-polymer of PMPAA shows significant improvement in diffraction efficiency and response time. When polymer concentration is reduced to 45 wt%, the PDAA composite shows a large PR enhancement. With 532 nm laser, diffraction efficiency reaches 70% and 40% for PDAA and PMPAA composites, respectively.

Paper Details

Date Published: 7 March 2014
PDF: 7 pages
Proc. SPIE 8983, Organic Photonic Materials and Devices XVI, 89831E (7 March 2014); doi: 10.1117/12.2037717
Show Author Affiliations
Ha N. Giang, Kyoto Institute of Technology (Japan)
Kenji Kinashi, Kyoto Institute of Technology (Japan)
Wataru Sakai, Kyoto Institute of Technology (Japan)
Naoto Tsutsumi, Kyoto Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 8983:
Organic Photonic Materials and Devices XVI
Christopher E. Tabor; François Kajzar; Toshikuni Kaino; Yasuhiro Koike, Editor(s)

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