Photophysical and second-order nonlinear properties of push-pull fluorinated 4-(dicyanomethylene)-pyranes

Stanislav L. Bondarev; Valentin N. Knyukshto; S. A. Tikhomirov; I. I. Kalosha; V. I. Tyvorski; D. N. Bobrov; N. M. Nevar; A. A. Turban; O. G. Kulinkovich; Isabelle N. Ledoux-Rak

doi:10.1117/12.475927

24 July 2002 Photophysical and second-order nonlinear properties of push-pull fluorinated 4-(dicyanomethylene)-pyranes

Stanislav L. Bondarev, Valentin N. Knyukshto, S. A. Tikhomirov, I. I. Kalosha, V. I. Tyvorski, D. N. Bobrov, N. M. Nevar, A. A. Turban, O. G. Kulinkovich, Isabelle N. Ledoux-Rak

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Proceedings Volume 4751, ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems; (2002) https://doi.org/10.1117/12.475927
Event: XVII International Conference on Coherent and Nonlinear Optics (ICONO 2001), 2001, Minsk, Belarus

Abstract

The photophysical and nonlinear properties of some push-pull fluorinated 4-(dicyanomethylene)- pyranes using the steady- sate and time-resolved picosecond spectroscopies with an electric-field-induced second-harmonic-generation technique have been investigated. Strong fluorescence quenching and large shifts of time-resolved transient picosecond spectra on going form nonpolar to polar solvents are connected with effective charge transfer interactions of polar singlet excited molecules with a polar environment. The high second- order polarizabilty (beta) equals 260 X 10^-30 esu for one of the investigated push-pull pyranes allows to propose using such kind of molecules in the development of second- harmonic-generation elements.

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Stanislav L. Bondarev, Valentin N. Knyukshto, S. A. Tikhomirov, I. I. Kalosha, V. I. Tyvorski, D. N. Bobrov, N. M. Nevar, A. A. Turban, O. G. Kulinkovich, and Isabelle N. Ledoux-Rak "Photophysical and second-order nonlinear properties of push-pull fluorinated 4-(dicyanomethylene)-pyranes", Proc. SPIE 4751, ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems, (24 July 2002); https://doi.org/10.1117/12.475927

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