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Picosecond excitation and selective intramolecular rates in supersonic molecular beams. I. SVL fluorescence spectra and lifetimes of anthracene and deuterated anthracenes

Lambert, W. R. and Felker, P. M. and Zewail, A. H. (1984) Picosecond excitation and selective intramolecular rates in supersonic molecular beams. I. SVL fluorescence spectra and lifetimes of anthracene and deuterated anthracenes. Journal of Chemical Physics, 81 (5). pp. 2209-2216. ISSN 0021-9606. http://resolver.caltech.edu/CaltechAUTHORS:LAMjcp84c

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Abstract

Fluorescence spectra and decay rate results for jet-cooled anthracene and some deuterated anthracenes excited to single vibronic levels in their S1 manifolds are presented. Consistent with our quantum beat results (see accompanying paper), fluorescence spectra exhibit the manifestations of negligible, then limited, and finally, extensive intramolecular vibrational energy redistribution (IVR), as the vibrational energy in S1 is increased. The decay rate results indicate that the primary decay channel of the anthracenes for S1 vibrational energies of 0 to 5600 cm^−1 is a radiationless transition involving a small electronic energy gap. These decay rate results also display manifestations of negligible IVR at low energies and extensive IVR at higher energies. The energy at which the decay rates (time-resolved spectra) indicate extensive IVR is about 1800 cm^−1.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.447923DOIUNSPECIFIED
http://link.aip.org/link/?JCPSA6/81/2209/1PublisherUNSPECIFIED
Additional Information:© 1984 American Institute of Physics. Received 23 November 1983; accepted 8 December 1983. It is a pleasure to acknowledge the support of this work by the National Science Foundation. We wish to thank Professor Joshua Jortner for informing us of their recent work on quantum yield measurements. [P.M.F. was an] IBM Research Fellow. [A.H.Z. was a] Camille and Henry Dreyfus Foundation Teacher-Scholar. Arthur Amos Noyes Laboratory of Chemical Physics, Contribution No. 6948.
Funders:
Funding AgencyGrant Number
National Science FoundationUNSPECIFIED
IBM Corp.UNSPECIFIED
Camille and Henry Dreyfus FoundationUNSPECIFIED
Subject Keywords:MOLECULAR BEAMS, ANTHRACENE, FLUORESCENCE, EMISSION SPECTRA, SUPERSONIC FLOW, JETS, DEUTERIUM, ISOTOPE EFFECTS, VIBRATIONAL STATES, PS RANGE
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Arthur Amos Noyes Laboratory of Chemical Physics6948
Record Number:CaltechAUTHORS:LAMjcp84c
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:LAMjcp84c
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12311
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:26 Nov 2008 18:01
Last Modified:26 Dec 2012 10:30

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