Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Tracking ultrafast excited-state bond-twisting motion in solution close to the Franck-Condon point

Dietzek, Benjamin LU ; Pascher, Torbjörn LU and Yartsev, Arkady LU orcid (2007) In The Journal of Physical Chemistry Part B 111(21). p.6034-6041
Abstract
Applying optimal control to photoinduced trans-cis isomerization in condensed phase, the dynamics of bond-twisting motion of 1,1'-diethyl-4,4'-cyanine in methanol and propanol is revealed. The shape of the optimized pulse resulting from minimization of the photoisomer formation can be directly related to the initial excited-state dynamics in close proximity to the Franck-Condon point. The solvent viscosity-dependent ultrafast wavepacket motion is reflected in the prominent down-chirp of the optimized pulses and reveals a detailed picture of the control mechanism: The reduction of the isomer production is achieved by most efficient dumping of excited population back to the trans ground state. In the higher-viscosity solvent, propanol,... (More)
Applying optimal control to photoinduced trans-cis isomerization in condensed phase, the dynamics of bond-twisting motion of 1,1'-diethyl-4,4'-cyanine in methanol and propanol is revealed. The shape of the optimized pulse resulting from minimization of the photoisomer formation can be directly related to the initial excited-state dynamics in close proximity to the Franck-Condon point. The solvent viscosity-dependent ultrafast wavepacket motion is reflected in the prominent down-chirp of the optimized pulses and reveals a detailed picture of the control mechanism: The reduction of the isomer production is achieved by most efficient dumping of excited population back to the trans ground state. In the higher-viscosity solvent, propanol, wavelength-dependent oscillatory features are superimposed to the overall chirp structure pointing to the importance of excited-state vibrational coherences for the dumping process. (Less)
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Part B
volume
111
issue
21
pages
6034 - 6041
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000246695100030
  • scopus:34250319761
ISSN
1520-5207
DOI
10.1021/jp068652i
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
id
49fd8d49-ab37-4fb0-a9d1-e6200c0f2243 (old id 663005)
date added to LUP
2016-04-01 17:06:06
date last changed
2022-01-29 00:23:00
@article{49fd8d49-ab37-4fb0-a9d1-e6200c0f2243,
  abstract     = {{Applying optimal control to photoinduced trans-cis isomerization in condensed phase, the dynamics of bond-twisting motion of 1,1'-diethyl-4,4'-cyanine in methanol and propanol is revealed. The shape of the optimized pulse resulting from minimization of the photoisomer formation can be directly related to the initial excited-state dynamics in close proximity to the Franck-Condon point. The solvent viscosity-dependent ultrafast wavepacket motion is reflected in the prominent down-chirp of the optimized pulses and reveals a detailed picture of the control mechanism: The reduction of the isomer production is achieved by most efficient dumping of excited population back to the trans ground state. In the higher-viscosity solvent, propanol, wavelength-dependent oscillatory features are superimposed to the overall chirp structure pointing to the importance of excited-state vibrational coherences for the dumping process.}},
  author       = {{Dietzek, Benjamin and Pascher, Torbjörn and Yartsev, Arkady}},
  issn         = {{1520-5207}},
  language     = {{eng}},
  number       = {{21}},
  pages        = {{6034--6041}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{The Journal of Physical Chemistry Part B}},
  title        = {{Tracking ultrafast excited-state bond-twisting motion in solution close to the Franck-Condon point}},
  url          = {{http://dx.doi.org/10.1021/jp068652i}},
  doi          = {{10.1021/jp068652i}},
  volume       = {{111}},
  year         = {{2007}},
}