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Main Title: Ultrafast coherent oscillations reveal a reactive mode in the ring-opening reaction of fulgides
Author(s): Slavov, C.
Bellakbil, Nabil
Wahl, J.
Mayer, Kerstin
Rück-Braun, Karola
Burghardt, I.
Wachtveitl, Josef
Braun, M.
Type: Article
Language Code: en
Abstract: The ultrafast ring-opening reaction of photochromic fulgides proceeds via conical intersections to the ground state isomers involving activation barriers in the excited state. The coherent oscillations observed in the femtosecond transient absorption signal of a methyl-substituted indolylfulgide were analysed in the framework of vibrational wavepackets to expose a dominant low-frequency mode at similar to 80 cm(-1). The quantum chemical calculations in the relaxed excited state geometry of this fulgide revealed that the experimentally observed vibrational normal mode has a dominant contribution to the relevant ring-opening reactive coordinate.
Issue Date: 2015
Date Available: 25-Oct-2017
DDC Class: 540 Chemie und zugeordnete Wissenschaften
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Journal Title: Physical chemistry, chemical physics
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 17
Issue: 21
Publisher DOI: 10.1039/c5cp01878a
Page Start: 14045
Page End: 14053
EISSN: 1463-9084
ISSN: 1463-9076
Appears in Collections:Fachgebiet Organische Chemie » Publications

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