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"Stability and reaction dynamics of trifluorinated indolylfulgides" T. Brust, S. Draxler, A. Popp, X. Chen, W. J. Lees, W. Zinth, M. BraunChemical Physics Letters 477 (2009) 298-303 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. BMO authors (in alphabetic order): Markus Braun Thomas Brust Simone Draxler Alexander Popp Wolfgang Zinth  WWW-Version |
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Letzte Änderung: 2016-09-14 13:34
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