title: Dicyanobenzene and dicyanopyrazine derived X-shaped charge-transfer chromophores: comparative and structure-property relationship study.
abstract: 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.
authors.affiliation: Institute of Organic Chemistry and Technology, University of Pardubice, Faculty of Chemical Technology, Studentská 573, Pardubice, 53210, Czech Republic. filip.bures@upce.cz.
authors.forename: L
authors.initials: L
authors.lastname: Dokládalová
authors.forename: F
authors.initials: F
authors.lastname: Bureš
authors.forename: W
authors.initials: W
authors.lastname: Kuznik
authors.forename: I V
authors.initials: IV
authors.lastname: Kityk
authors.forename: A
authors.initials: A
authors.lastname: Wojciechowski
authors.forename: T
authors.initials: T
authors.lastname: Mikysek
authors.forename: N
authors.initials: N
authors.lastname: Almonasy
authors.forename: M
authors.initials: M
authors.lastname: Ramaiyan
authors.forename: Z
authors.initials: Z
authors.lastname: Padělková
authors.forename: J
authors.initials: J
authors.lastname: Kulhánek
authors.forename: M
authors.initials: M
authors.lastname: Ludwig