title: New chelating stilbazonium-like dyes from Michler's ketone.
abstract: A series of "push-pull" salts substituted with an electron-donating bis(N,N-dimethyl)aniline unit and different electron-withdrawing methyl or chelating pyridinium units have been designed and synthesized from Michler's ketone. The spectroscopic and electronic properties were investigated and compared to their DAST homologues. The studies revealed that a lower HOMO-LUMO gap is obtained in all cases, showing the ability of our donor to increase the "push-pull" effect. Two chromophores with a terpyridine as acceptor end group have also been prepared.
authors.affiliation: Institut Lavoisier de Versailles, Université de Versailles, UMR 8180 CNRS, 45 avenue des Etats-Unis, 78035 Versailles, France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Dumur
authors.forename: Cédric R
authors.initials: CR
authors.lastname: Mayer
authors.forename: Eddy
authors.initials: E
authors.lastname: Dumas
authors.forename: Fabien
authors.initials: F
authors.lastname: Miomandre
authors.forename: Michel
authors.initials: M
authors.lastname: Frigoli
authors.forename: Francis
authors.initials: F
authors.lastname: Sécheresse