Solvent Effect on the Photochemical Properties of Symmetrically Substituted trans-3,3',5,5'-Tetramethoxystilbene

详细信息    查看全文

• 作者：Junpei Hayakawa ; Masashi Ikegami ; Takuo Mizutani ; Md. Wahadoszamen ; Atsuya Momotake ; Yoshinobu Nishimura ; Tatsuo Arai
• 刊名：Journal of Physical Chemistry A
• 出版年：2006
• 出版时间：November 23, 2006
• 年：2006
• 卷：110
• 期：46
• 页码：12566 - 12571
• 全文大小：95K
• 年卷期：v.110,no.46(November 23, 2006)
• ISSN：1520-5215

文摘

Photochemical properties of trans-3,3',5,5'-tetramethoxystilbene (TMST) have been studied in various polarsolvents. The Stokes shift of trans-TMST was found to be increased with increasing solvent polarity. Thefluorescence lifetime of trans-TMST experienced a large solvent effect changing from 2.3 ns in cyclohexaneto 16.6 ns in acetonitrile. These results indicate that the excited singlet state of trans-TMST has a charge-transfer (CT) character. On the basis of the obtained results, the interior polar environment of a water-solubleTMST dendrimer is discussed.