Ultrafast studies on proton transfer in photostabilizers
โ Scribed by Terrance P. Smith; Krzysztof A. Zaklika; Khalid Thakur; Gilbert C. Walker; Keisuke Tominaga; Paul F. Barbara
- Book ID
- 108043442
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 743 KB
- Volume
- 65
- Category
- Article
- ISSN
- 1010-6030
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๐ SIMILAR VOLUMES
## Abstract Resonance Raman spectra of the three isoelectronic proton transfer systems 2โ(2โฒโhydroxyโ5โฒโmethylphenyl)โbenzotriazole (TIN), 2โ(2โฒโhydroxyphenyl)benzothiazole (HBT) and 2โ(2โฒโhydroxyphenyl)benzoxazole (HBO) were measured with excitation in the range of the S~0~โS~1~ absorption band of
The proton transfer in 2-(2'-hydroxy-5 '-methylphenyl)henzotriazole is studied in nonpolar solvents, where two major ground state conformers are identified. After femtosecond excitation of the predominant species, the hydroxylic proton is transferred to the benzotriazole moiety on a time scale of 10
The subpicosecond photoinduced proton-transfer cycle of 2-( 2'-hydroxy-S-methylphenyl)benzotriazole creates ground state molecules with a highly excited vibrational system. As a result, the So-S, absorption shows a drastic broadening in the picosecond regime that is directly monitored in temporally