Stability and reaction dynamics of trifluorinated indolylfulgides

Thomas Brust, Simone Draxler, Alexander Popp, Xi Chen, Watson J. Lees, Wolfgang Zinth, Markus Braun

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Quantum efficiencies and ultrafast dynamics of the ring-closure and ring-opening reaction of a trifluorinated dicyclopropyl indolylfulgide with improved photostability are investigated by stationary and ultrafast absorption spectroscopy. The ring-closure reaction occurs on the time scale of 200 fs and is found to be temperature independent (T = 287-333 K). However, an activated behaviour is observed for the ring-opening reaction. A comparison with the corresponding non-substituted indolylfulgide shows that the dicyclopropyl group favours the open isomer via lower cyclisation and higher cycloreversion quantum efficiencies and faster dynamics of the ring-opening reaction.

Original languageEnglish (US)
Pages (from-to)298-303
Number of pages6
JournalChemical Physics Letters
Volume477
Issue number4-6
DOIs
StatePublished - Aug 6 2009
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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