The Library
Time-resolved velocity map imaging of methyl elimination from photoexcited anisole
Tools
Hadden, David J., Williams, C. A. (Craig A.), Roberts, Gareth M. and Stavros, Vasilios G. (2011) Time-resolved velocity map imaging of methyl elimination from photoexcited anisole. Physical Chemistry Chemical Physics, Vol.13 (No.10). pp. 4494-4499. doi:10.1039/c0cp02429e ISSN 1463-9076.
|
PDF
WRAP_stavros_0482356-ch-230811-wrap_stavros.pdf - Published Version - Requires a PDF viewer. Download (507Kb) |
Official URL: http://dx.doi.org/10.1039/C0CP02429E
Abstract
To date, H-atom elimination from heteroaromatic molecules following UV excitation has been extensively studied, with the focus on key biological molecules such as chromophores of DNA bases and amino acids. Extending these studies to look at elimination of other non-hydride photoproducts is essential in creating a more complete picture of the photochemistry of these biomolecules in the gas-phase. To this effect, CH3 elimination in anisole has been studied using time resolved velocity map imaging (TR-VMI) for the first time, providing both time and energy information on the dynamics following photoexcitation at 200 nm. The extra dimension of energy afforded by these measurements has enabled us to address the role of πσ* states in the excited state dynamics of anisole as compared to the hydride counterpart (phenol), providing strong evidence to suggest that only CH3 fragments eliminated with high kinetic energy are due to direct dissociation involving a 1πσ* state. These measurements also suggest that indirect mechanisms such as statistical unimolecular decay could be contributing to the dynamics at much longer times.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Library of Congress Subject Headings (LCSH): | Heterocyclic compounds, Photochemistry, Methyl groups, Elimination reactions | ||||
Journal or Publication Title: | Physical Chemistry Chemical Physics | ||||
Publisher: | Royal Society of Chemistry | ||||
ISSN: | 1463-9076 | ||||
Official Date: | 2011 | ||||
Dates: |
|
||||
Volume: | Vol.13 | ||||
Number: | No.10 | ||||
Page Range: | pp. 4494-4499 | ||||
DOI: | 10.1039/c0cp02429e | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 17 December 2015 | ||||
Date of first compliant Open Access: | 17 December 2015 | ||||
Funder: | Royal Society (Great Britain), Engineering and Physical Sciences Research Council (EPSRC), Leverhulme Trust (LT), University of Warwick | ||||
Grant number: | EP/E011187 (EPSRC), EP/H003401 (EPSRC) |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year