Alignment and aggregation studies of highly dipolar TCNQ adducts in guest-host systems

Nancy-Ann Hackman; David Bloor; Graham Hugh Cross; Mosurkal Ravi; Marek Szablewski; Isabelle N. Ledoux-Rak; Sandrine Deveau; Joseph Zyss

doi:10.1117/12.408501

29 November 2000 Alignment and aggregation studies of highly dipolar TCNQ adducts in guest-host systems

Nancy-Ann Hackman, David Bloor, Graham Hugh Cross, Mosurkal Ravi, Marek Szablewski, Isabelle N. Ledoux-Rak, Sandrine Deveau, Joseph Zyss

Author Affiliations +

Proceedings Volume 4106, Linear, Nonlinear, and Power-Limiting Organics; (2000) https://doi.org/10.1117/12.408501
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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.

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Nancy-Ann Hackman, David Bloor, Graham Hugh Cross, Mosurkal Ravi, Marek Szablewski, Isabelle N. Ledoux-Rak, Sandrine Deveau, and Joseph Zyss "Alignment and aggregation studies of highly dipolar TCNQ adducts in guest-host systems", Proc. SPIE 4106, Linear, Nonlinear, and Power-Limiting Organics, (29 November 2000); https://doi.org/10.1117/12.408501

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