Energy conversion process from the photoexcited electronic states studied by the temperature lens and acoustic peak delay methods in solution
✍ Scribed by Toshiya Okazaki; Noboru Hirota; Masahide Terazima
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 565 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0167-7322
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✦ Synopsis
Ultrafast temperature rise after the deactivation of the electronically excited state of 2hydroxybenzophenone in various solvents is investigated by two photothermal techniques; temperature lens and acoustic peak delay methods, and by the population grating technique. The results from these methods show that the thermalization process takes place by two phases; fast (cl ps) and rather slow (-30 ps) processes.
From the solvent dependence of the themralization rate, we suggest that these' processes are related with the intermolecular interaction and the solvation structure around the photoexcited molecules.