Methylenepyran based dipolar and quadrupolar dyes: synthesis,electrochemical and photochemical properties |
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| Authors: | Sébastien Gauthier Nikolay Vologdin Sylvain Achelle Alberto Barsella Bertrand Caro Françoise Robin-le Guen |
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| Institution: | 1. Institut des Sciences Chimiques de Rennes UMR CNRS 6226, IUT de Lannion, rue Edouard Branly, BP 30219, F22302 Lannion Cedex, France;2. Département d''Optique ultra-rapide et Nanophotonique, IPCMS-CNRS, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France |
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| Abstract: | This paper presents the synthesis of a series of push–pull and quadrupolar π-conjugated structures incorporating pro-aromatic methylenepyran electron-donor groups and various electron-attracting groups. Some of the methylenepyran derivatives were oxidized by I2 to give, after reduction by Na2S2O3, bismethylenepyran compounds via successive steps. |
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| Keywords: | Methylenepyran Diazines Push&ndash pull Nonlinear optics Dyes |
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