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J Phys Chem A. 2011 Oct 27;115(42):11508-14. doi: 10.1021/jp2051307. Epub 2011 Sep 27.

Environment-dependent ultrafast photoisomerization dynamics in azo dye.

Author information

1
Department of Electrophysics, National Chiao-Tung University, Hsinchu, Taiwan, Republic of China.

Abstract

Azoaromatic dyes have been extensively investigated over the past decade due to their potential use in a variety of optical devices that exploit their ultrafast photoisomerization processes. Among the azoaromatic dyes, Disperse Red 19 is a commercially available azobenzene nonlinear optical chromophore with a relatively high ground-state dipole moment. In the present study, we used ultrafast time-resolved spectroscopy to clarify the dynamics of a push-pull substituted azobenzene dye. Solution and film samples exhibited different ultrafast dynamics, indicating that the molecular environment affects the photoisomerization dynamics of the dye.

PMID:
21916471
DOI:
10.1021/jp2051307

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