Publikace: Dicyanobenzene and dicyanopyrazine derived X-shaped charge-transfer chromophores: comparative and structure–property relationship study
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Dokládalová, Lenka
Bureš, Filip
Kuznik, Wojciech
Kityk, Iwan V.
Wojciechowski, Artur
Mikysek, Tomáš
Almonasy, Numan
Ramaiyan, Manikannan
Padělková, Zdeňka
Kulhánek, Jiří
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Royal Society of Chemistry
Abstrakt
A series of novel X-shaped push–pull compounds based on benzene-1,2-dicarbonitrile has been designed, synthesized and further investigated by X-ray analysis, electrochemistry, absorption and emission spectra, SHG experiment and quantum-chemical calculations. The obtained data were compared with those for isolobal 5,6-disubstituted pyrazine-2,3-dicarbonitriles. Structure–property relationships were elucidated. The extension, composition and planarization of the π-linker used as well as the electron-withdrawing ability of both dicyano-substituted acceptor units affect the linear and nonlinear properties of the target charge-transfer chromophores most significantly.