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Femtosecond spectroscopy of excited-state proton transfer in 2-(2′-hydroxyphenyl)benzothiazole

✍ Scribed by F. Laermer; T. Elsaesser; W. Kaiser

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
566 KB
Volume
148
Category
Article
ISSN
0009-2614

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✦ Synopsis

The femtosecond kinetics associated with intramolecular proton transfer in the electronically excited state of aromatic molecules is investigated. The initial enol structure of 2-(2'-hydroxyphenyl)benzothiazole (HBT) is excited by a femtosecond UV pulse at 3 15 nm and the risetime of the emission of the HBT keto tautomer is studied by a probe pulse at 630 nm. The observed time constant of 170 f 20 fs is related to the formation of the keto tautomer in non-polar solvents.

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