Watching ultrafast barrierless excited-state isomerization of pseudocyanine in real time
Dietzek, Benjamin LU ; Yartsev, Arkady LU
and Tarnovsky, Alexander N.
(2007)
In The Journal of Physical Chemistry Part B
111(17).
p.4520-4526
- Abstract
- The photoinduced excited-state processes in 1,1'-diethyl-2,2'-cyanine iodine are investigated using femtosecond time-resolved pump-probe spectroscopy. Using a broad range of probe wavelengths, the relaxation of the initially prepared excited-state wavepacket can be followed down to the sink region. The data directly visualize the directed downhill motion along the torsional reaction coordinate and suggest a barrierless excited-state isomerization in the short chain cyanine dye. Additionally, ultrafast ground-state hole and excited-state hole replica broadening is observed. While the narrow excited-state wavepacket broadens during pump-probe overlap, the ground-state hole burning dynamics takes place on a significantly longer time-scale.... (More)
- The photoinduced excited-state processes in 1,1'-diethyl-2,2'-cyanine iodine are investigated using femtosecond time-resolved pump-probe spectroscopy. Using a broad range of probe wavelengths, the relaxation of the initially prepared excited-state wavepacket can be followed down to the sink region. The data directly visualize the directed downhill motion along the torsional reaction coordinate and suggest a barrierless excited-state isomerization in the short chain cyanine dye. Additionally, ultrafast ground-state hole and excited-state hole replica broadening is observed. While the narrow excited-state wavepacket broadens during pump-probe overlap, the ground-state hole burning dynamics takes place on a significantly longer time-scale. The experiment reported can be considered as a direct monitoring of the shape and the position of the photoprepared wavepacket on the excited-state potential energy surface. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/663380
- author
- Dietzek, Benjamin
LU
; Yartsev, Arkady
LU
and Tarnovsky, Alexander N.
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of Physical Chemistry Part B
- volume
- 111
- issue
- 17
- pages
- 4520 - 4526
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000245954800031
- scopus:34249034210
- ISSN
- 1520-5207
- DOI
- 10.1021/jp066471a
- 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
- 4186d490-c6db-47d3-b91a-acfb893c22d1 (old id 663380)
- date added to LUP
- 2016-04-01 15:38:56
- date last changed
- 2022-01-28 06:22:06
@article{4186d490-c6db-47d3-b91a-acfb893c22d1,
abstract = {{The photoinduced excited-state processes in 1,1'-diethyl-2,2'-cyanine iodine are investigated using femtosecond time-resolved pump-probe spectroscopy. Using a broad range of probe wavelengths, the relaxation of the initially prepared excited-state wavepacket can be followed down to the sink region. The data directly visualize the directed downhill motion along the torsional reaction coordinate and suggest a barrierless excited-state isomerization in the short chain cyanine dye. Additionally, ultrafast ground-state hole and excited-state hole replica broadening is observed. While the narrow excited-state wavepacket broadens during pump-probe overlap, the ground-state hole burning dynamics takes place on a significantly longer time-scale. The experiment reported can be considered as a direct monitoring of the shape and the position of the photoprepared wavepacket on the excited-state potential energy surface.}},
author = {{Dietzek, Benjamin and Yartsev, Arkady and Tarnovsky, Alexander N.}},
issn = {{1520-5207}},
language = {{eng}},
number = {{17}},
pages = {{4520--4526}},
publisher = {{The American Chemical Society (ACS)}},
series = {{The Journal of Physical Chemistry Part B}},
title = {{Watching ultrafast barrierless excited-state isomerization of pseudocyanine in real time}},
url = {{http://dx.doi.org/10.1021/jp066471a}},
doi = {{10.1021/jp066471a}},
volume = {{111}},
year = {{2007}},
}