New chelating stilbazonium-like dyes from Michler's ketone |
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Authors: | Dumur Frédéric Mayer Cédric R Dumas Eddy Miomandre Fabien Frigoli Michel Sécheresse Francis |
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Affiliation: | Institut Lavoisier de Versailles, Université de Versailles, UMR 8180 CNRS, 45 avenue des Etats-Unis, 78035 Versailles, France. |
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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. |
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