Ultrafast Structural Dynamics of Photochromic Indolylfulgimides Studied by Vibrational Spectroscopy and DFT Calculations

The structural dynamics of the ring-opening reaction in a photochromic indolylfulgimide, a reversible, ultrafast photoswitch, is investigated by ultra-broadband time-resolved vibrational spectroscopy. The experimentally observed vibrational modes of the indolylfulgimide photoisomers C and E are assi...

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Bibliographic Details
Published in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2006-11, Vol.110 (47), p.12769-12776
Main Authors: Koller, Florian O, Schreier, Wolfgang J, Schrader, Tobias E, Sieg, Arne, Malkmus, Stephan, Schulz, Christine, Dietrich, Steffen, Rück-Braun, Karola, Zinth, Wolfgang, Braun, Markus
Format: Article
Language:English
Subjects:
Algorithms
Indoles - chemistry
Isomerism
Molecular Structure
Photochemistry
Spectrophotometry, Ultraviolet
Succinimides - chemistry
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Summary:The structural dynamics of the ring-opening reaction in a photochromic indolylfulgimide, a reversible, ultrafast photoswitch, is investigated by ultra-broadband time-resolved vibrational spectroscopy. The experimentally observed vibrational modes of the indolylfulgimide photoisomers C and E are assigned to normal modes with the help of DFT calculations. A complete evaluation of the observed vibrational dynamics including excited-state vibrational modes is used to characterize the reaction path and the cooling behavior of the photoswitch.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp0657787