Photophysics of closed- and open-ring isomers of a diarylethene with a carboxylic anchor group

Autor: Sebastian Friede, M. Zastrow, K. Rueck-Braun, Thomas Elsaesser, Cornelius Gahl, Sergei Kuehn
Jazyk: angličtina
Rok vydání: 2012
Předmět:
DOI: 10.1016/j.cplett.2012.05.077
Popis: We study the transient photophysical properties of a diarylethene with a carboxylic anchor group by a combination of steady-state and ultrafast emission and absorption spectroscopy. After excitation of the closed-ring form, fluorescence with a quantum yield of 10−5 is observed and separated into different spectro-temporal components. The S1 state of the closed-ring form shows a lifetime of 1.3 ps and decays mainly by internal conversion to the S0 state of this isomer. This vibrationally hot ground state cools on a time scale of 10 ps.
Databáze: OpenAIRE
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