English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Vibrational energy transfer in highly excited bridged azulene- aryl compounds: Direct observation of energy flow through aliphatic chains and into the solvent

Schwarzer, D., Hanisch, C., Kutne, P., & Troe, J. (2002). Vibrational energy transfer in highly excited bridged azulene- aryl compounds: Direct observation of energy flow through aliphatic chains and into the solvent. Journal of Physical Chemistry A, 106(35), 8019-8028. Retrieved from http://pubs.acs.org/doi/pdfplus/10.1021/jp0210576.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-F301-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-E472-8
Genre: Journal Article

Files

show Files
hide Files
:
16653.pdf (Publisher version), 0B
 
File Permalink:
-
Name:
16653.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute for Biophysical Chemistry (Karl Friedrich Bonhoeffer Institute), Göttingen; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Schwarzer, D.1, Author              
Hanisch, C.2, Author              
Kutne, P.2, Author              
Troe, J.2, Author              
Affiliations:
1Research Group of Reaction Dynamics, MPI for biophysical chemistry, Max Planck Society, ou_578601              
2Department of Spectroscopy and Photochemical Kinetics, MPI for biophysical chemistry, Max Planck Society, ou_578624              

Content

show
hide
Free keywords: -
 Abstract: Intra- and intermolecular vibrational energy flow in vibrationally highly excited bridged azulene-(CH2)(n)-aryl (n = 0,1,3; aryl = benzene or anthracene) compounds is observed using time-resolved pump-probe laser spectroscopy. Light absorption in the azulene S-1-band, followed by fast internal conversion, leads to vibrational excitation at the azulene side of the molecules. Subsequent energy flow through the aliphatic chain to the aryl group at the other side of the molecules and vibrational energy transfer into a surrounding liquid solvent bath are measured either by probing the red edge of the azulene S-3-absorption band at 300 nm and/or the anthracene S-1- absorption, band at 400 nm. The data are analyzed by representing the intramolecular energy flux as a diffusion process and using hot absorption spectra of the two chromophores of the compounds for measuring their energy contents. A fit to all of the experimental signals leads to an energy. conductivity of a single C-C bond of kappa(CC) = (10 +/- 1) cm(-1) K-1 ps(-1) (with energies measured in cm(-1)). Depending on the substituent and the length of,the chain, this models yield intramolecular energy transfer times of 1.2-4 ps. Energy transfer to the solvent 1,1,2-trichloro-trifluoro- ethane, on the other hand, is characterized by an exponential loss profile with a cooling time constant of (21 +/- 2) ps, independent of the substituent and the same as for bare azulene.

Details

show
hide
Language(s): eng - English
 Dates: 2002-09-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Physical Chemistry A
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 106 (35) Sequence Number: - Start / End Page: 8019 - 8028 Identifier: -