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Twist and return-induced ring strain triggers quick relaxation of a (Z)-stabilized cyclobisazobenzene

Continuous irradiation of the thermodynamically stable (Z,Z)-cyclobisazobenzene does not lead to accumulation of a (Z,E) or (E,E) isomer as one might expect. Our combined experimental and computational investigation reveals that Z → E photoisomerization still takes place on an ultrafast time scale b...

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Bibliographic Details
Main Authors: Slavov, Chavdar (Author) , Yang, Chong (Author) , Heindl, Andreas H. (Author) , Neudecker, Tim (Author) , Wegner, Hermann A. (Author) , Dreuw, Andreas (Author) , Wachtveitl, Josef (Author)
Format: Article (Journal)
Language:English
Published: July 31, 2018
In: The journal of physical chemistry letters
Year: 2018, Volume: 9, Issue: 16, Pages: 4776-4781
ISSN:1948-7185
DOI:10.1021/acs.jpclett.8b02159
Online Access:Verlag, Volltext: https://doi.org/10.1021/acs.jpclett.8b02159
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Author Notes:Chavdar Slavov,Chong Yang, Andreas H. Heindl, Tim Stauch, Hermann A. Wegner, Andreas Dreuw, and Josef Wachtveitl
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Summary:Continuous irradiation of the thermodynamically stable (Z,Z)-cyclobisazobenzene does not lead to accumulation of a (Z,E) or (E,E) isomer as one might expect. Our combined experimental and computational investigation reveals that Z → E photoisomerization still takes place on an ultrafast time scale but induces large ring strain in the macrocycle, which leads to a very fast thermal back-isomerization, preventing photostationary accumulation of (E)-isomers
Item Description:Gesehen am 07.06.2019
Physical Description:Online Resource
ISSN:1948-7185
DOI:10.1021/acs.jpclett.8b02159

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