English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Ring-Closing Reaction in Diarylethene Captured by Femtosecond Electron Crystallography

Jean-Ruel, H., Gao, M., Kochman, M. A., Lu, C., Liu, L. C., Cooney, R. R., et al. (2013). Ring-Closing Reaction in Diarylethene Captured by Femtosecond Electron Crystallography. The Journal of Physical Chemistry B, 117(49), 15894-15902. doi:10.1021/jp409245h.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-8F43-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-195F-4
Genre: Journal Article

Files

show Files

Locators

show
hide
Locator:
http://dx.doi.org/10.1021/jp409245h (Publisher version)
Description:
-

Creators

show
hide
 Creators:
Jean-Ruel, Hubert1, 2, Author              
Gao, Meng1, 2, Author              
Kochman, Michal A.3, Author
Lu, Cheng1, Author
Liu, Lai Chung1, 2, Author              
Cooney, Ryan R.1, Author
Morrison, Carole A.3, Author
Miller, R. J. Dwayne1, 2, Author              
Affiliations:
1Departments of Chemistry and Physics, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada, ou_persistent22              
2Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
3School of Chemistry and EaStCHEM Research School, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: The photoinduced ring-closing reaction in diarylethene, which serves as a model system for understanding reactive crossings through conical intersections, was directly observed with atomic resolution using femtosecond electron diffraction. Complementary ab initio calculations were also performed. Immediately following photoexcitation, subpicosecond structural changes associated with the formation of an open-ring excited-state intermediate were resolved. The key motion is the rotation of the thiophene rings, which significantly decreases the distance between the reactive carbon atoms prior to ring closing. Subsequently, on the few picosecond time scale, localized torsional motions of the carbon atoms lead to the formation of the closed-ring photoproduct. These direct observations of the molecular motions driving an organic chemical reaction were only made possible through the development of an ultrabright electron source to capture the atomic motions within the limited number of sampling frames and the low data acquisition rate dictated by the intrinsically poor thermal conductivity and limited photoreversibility of organic materials.

Details

show
hide
Language(s): eng - English
 Dates: 2013-10-112013-09-162013-10-132013-12-12
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/jp409245h
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: The Journal of Physical Chemistry B
  Other : J. Phys. Chem. B
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 117 (49) Sequence Number: - Start / End Page: 15894 - 15902 Identifier: ISSN: 1520-6106
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000293370_1