Solvent effect on the photochemical properties of symmetrically substituted trans-3,3',5,5'-tetramethoxystilbene

Junpei Hayakawa; Masashi Ikegami; Takuo Mizutani; Md Wahadoszamen; Atsuya Momotake; Yoshinobu Nishimura; Tatsuo Arai

doi:10.1021/jp065075p

Solvent effect on the photochemical properties of symmetrically substituted trans-3,3',5,5'-tetramethoxystilbene

J Phys Chem A. 2006 Nov 23;110(46):12566-71. doi: 10.1021/jp065075p.

Authors

Junpei Hayakawa¹, Masashi Ikegami, Takuo Mizutani, Md Wahadoszamen, Atsuya Momotake, Yoshinobu Nishimura, Tatsuo Arai

Affiliation

¹ Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.

PMID: 17107105
DOI: 10.1021/jp065075p

Abstract

Photochemical properties of trans-3,3',5,5'-tetramethoxystilbene (TMST) have been studied in various polar solvents. The Stokes shift of trans-TMST was found to be increased with increasing solvent polarity. The fluorescence lifetime of trans-TMST experienced a large solvent effect changing from 2.3 ns in cyclohexane to 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-soluble TMST dendrimer is discussed.