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 |
Externí odkaz: |
načítá se...