Change search
ReferencesLink to record
Permanent link

Direct link
On the Condensed Phase Ring-Closure of Vinylheptafulvalene and Ring-Opening of Gaseous Dihydroazulene
Stockholm University, Faculty of Science, Department of Physics. University of Munich .
Show others and affiliations
2013 (English)In: Journal of Physical Chemistry A, ISSN 1089-5639, E-ISSN 1520-5215, Vol. 117, no 16, 3340-3347 p.Article in journal (Refereed) Published
Abstract [en]

Dihydroazulenes are interesting because of their photoswitching behavior. While the ring-opening to vinylheptafulvalene (VHF) is light induced, the back reaction is known to proceed thermally. In the present paper, we show the first gas phase study of the ring-opening reaction of 2-phenyl-1,8a-dihydroazulene-1,1-dicarbonitrile (Ph-DHA) by means of time-resolved photoelectron spectroscopy which permits us to follow the ring-opening process. Moreover, we investigated s-trans-Ph-VHF in a series of transient absorption experiments, supported by ab initio computations, to understand the origin of the absence of light-induced ring-closure. The transient absorption results show a biexponential decay governed by a hitherto unknown state. This state is accessed within 1-2 ps and return to the ground state is probably driven through a cis-trans isomerization about the exocyclic C-1=C-2 double bond. The rapid decrease in potential energy disfavors internal rotation to s-cis-Ph-VHF, the structure that would precede the ring-closure reaction.

Place, publisher, year, edition, pages
2013. Vol. 117, no 16, 3340-3347 p.
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-90360DOI: 10.1021/jp400616cISI: 000318211400010OAI: diva2:628247


Available from: 2013-06-13 Created: 2013-06-03 Last updated: 2013-06-13Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Schalk, Oliver
By organisation
Department of Physics
In the same journal
Journal of Physical Chemistry A
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 27 hits
ReferencesLink to record
Permanent link

Direct link