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Proceedings Paper

Alignment and aggregation studies of highly dipolar TCNQ adducts in guest-host systems
Author(s): Nancy-Ann Hackman; David Bloor; Graham Hugh Cross; Mosurkal Ravi; Marek Szablewski; Isabelle N. Ledoux-Rak; Sandrine Deveau; Joseph Zyss
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Paper Abstract

Highly dipolar non-linear optical chromophores with absorption typically in the range of 350-500 nm have been synthesized by the reactions of amines with tetracyanoquinodimethane (TCNQ). These materials show interesting fluorescence properties with the emission strongly dependent on the host environment. One of the advantages of these materials is the large figure of merit ((mu) (beta) ), which is calculated to be -765 x 10-48esu, allowing large non-linear optical coefficients to be obtained. Guest-host polymer films of these materials have been corona poled using a constant current corona triode. These materials are highly dipolar which leads to the formation of aggregates within the doped polymer films. Studies of the second order non-linearities using second harmonic generation (SHG have revealed the presence of such aggregation. The magnitude of the SHG that can be obtained form such systems is therefore severely limited by this aggregation. This phenomenon was then confirmed with optical spectroscopy and electric field induced second harmonic generation (EFISH) studies.

Paper Details

Date Published: 29 November 2000
PDF: 11 pages
Proc. SPIE 4106, Linear, Nonlinear, and Power-Limiting Organics, (29 November 2000); doi: 10.1117/12.408501
Show Author Affiliations
Nancy-Ann Hackman, Univ. of Durham (United Kingdom)
David Bloor, Univ. of Durham (United Kingdom)
Graham Hugh Cross, Univ. of Durham (United Kingdom)
Mosurkal Ravi, Univ. of Durham (United Kingdom)
Marek Szablewski, Univ. of Durham (United Kingdom)
Isabelle N. Ledoux-Rak, Ecole Normale Superieure de Cachan (France)
Sandrine Deveau, Ecole Normale Superieure de Cachan (France)
Joseph Zyss, Ecole Normale Superieure de Cachan (France)

Published in SPIE Proceedings Vol. 4106:
Linear, Nonlinear, and Power-Limiting Organics
Manfred Eich; Christopher M. Lawson; Mark G. Kuzyk; Manfred Eich; Mark G. Kuzyk; Christopher M. Lawson; Robert A. Norwood, Editor(s)

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