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Proceedings Paper

Enhanced photoinduced birefringence in hydrogen-bonded guest-host polymers
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Paper Abstract

We show that hydrogen bonding between azo molecules and polymer host enhances the photoinduced optical anisotropy in azo-containing polymers without sacrificing the ease of processing of conventional guest-host systems. The primary mechanism behind the enhancement is the possibility to use high dye doping levels compared to conventional guest-host systems due to reduced aggregation tendency of the dyes. For Disperse Red 1, the saturated birefringence is enhanced by a factor of 8 due to hydrogen bonding at 30 wt % loading. Moreover, hydrogen bonding reduces the mobility of the guest molecules in the polymer host which improves the temporal stability of the induced birefringence to a level comparable to side-chain polymers.

Paper Details

Date Published: 13 September 2007
PDF: 8 pages
Proc. SPIE 6653, Linear and Nonlinear Optics of Organic Materials VII, 665313 (13 September 2007); doi: 10.1117/12.733493
Show Author Affiliations
Arri Priimagi, Helsinki Univ. of Technology (Finland)
Francisco J. Rodriguez, Tampere Univ. of Technology (Finland)
Martti Kauranen, Tampere Univ. of Technology (Finland)
Matti Kaivola, Helsinki Univ. of Technology (Finland)

Published in SPIE Proceedings Vol. 6653:
Linear and Nonlinear Optics of Organic Materials VII
Jean-Michel Nunzi, Editor(s)

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