Environment-dependent ultrafast photoisomerization dynamics in Azo dye

Chun Chih Hsu, Yu Ting Wang, Atsushi Yabushita*, Chih-Wei Luo, Yi Nan Hsiao, Shiuan-Huei Lin, Takayoshi Kobayashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


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.

Original languageEnglish
Pages (from-to)11508-11514
Number of pages7
JournalJournal of Physical Chemistry A
Issue number42
StatePublished - 27 Oct 2011


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