Publikace: Synthesis, photophysical and nonlinear optical properties of [1,2,5] oxadiazolo[3,4-b]pyrazine-based linear push-pull systems
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Verbitskiy, Egor V
Achelle, Sylvain
Bureš, Filip
le Poul, Pascal
Barsella, Alberto
Kvashnin, Yuriy A
Rusinov, Gennady L
Robin-le Guen, Francoise
Chupakhin, Oleg N
Charushin, Valery N
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Elsevier Science SA
Abstrakt
A series of D-pi-A chromophores based on [1,2,5]oxadiazolo[3,4-b]pyrazine electron-withdrawing group has been designed. The influence of the pi-conjugated linker (1,4-phenylene and 2,5-thienylene) and the amino-electron-donating group (diphenylamino and carbazol-9-yl) was studied by cyclic voltammetry, UV-Vis and emission spectroscopy. The second order nonlinear optical properties were also studied using the electric field induced second harmonic generation (EFISH) method. The experimental results have been rationalized by theoretical DFT calculations.
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Klíčová slova
nitrogen heterocycles, donor-acceptor systems, nonlinear optic, fluorescence, intramolecular charge transfer, donor-akceptorový systém, nelineární optika, fluorescence, pyrazin