Sökning: onr:"swepub:oai:DiVA.org:su-90360" >
On the Condensed Ph...
On the Condensed Phase Ring-Closure of Vinylheptafulvalene and Ring-Opening of Gaseous Dihydroazulene
-
- Schalk, Oliver (författare)
- Stockholms universitet,Fysikum,University of Munich
-
Broman, Sören L. (författare)
-
Petersen, Michael A. (författare)
-
visa fler...
-
Khakhulin, Dmitry V. (författare)
-
Brogaard, Rasmus Y. (författare)
-
Nielsen, Mogens Brondsted (författare)
-
Boguslavskiy, Andrey E. (författare)
-
Stolow, Albert (författare)
-
Solling, Theis I. (författare)
-
visa färre...
-
(creator_code:org_t)
- 2013-04-15
- 2013
- Engelska.
-
Ingår i: Journal of Physical Chemistry A. - : American Chemical Society (ACS). - 1089-5639 .- 1520-5215. ; 117:16, s. 3340-3347
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas