Pyrylogens: Synthesis, Structural, Electrochemical, and Photophysical Characterization of a New Class of Electron Transfer Sensitizers

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• 作者：Edward L. Clennan ; Chen Liao ; Erambo Ayokosok
• 刊名：Journal of the American Chemical Society
• 出版年：2008
• 出版时间：June 18, 2008
• 年：2008
• 卷：130
• 期：24
• 页码：7552 - 7553
• 全文大小：268K
• 年卷期：v.130,no.24(June 18, 2008)
• ISSN：1520-5126

文摘

The synthesis and photophysical properties of a new series of dicationic electron transfer sensitizers have been reported. These new materials, pyrylogens, are hybrids of pyrylium cations and Viologen dications. Electron transfer reactions of neutral organic substrates using these new sensitizers generate radical-cation/radical-cation pairs whose repulsive (repellent) interaction is designed to compete with energy wasting return electron transfer (RET) by enhancing diffusive separation and formation of solvent separated ions.