Rotational Coherence Spectroscopy Applied to the Structural Analysis of Jet-Cooled Tryptophan Analogs and their Hydrogen-Bonded Complexes with Polar Solvents
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Date
1990
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Publisher
Ohio State University
Abstract
Rotational Coherence $Spectroscopy^{1}$, a time-resolved high resolution rotational spectroscopy, is performed to determine the structures of various jet-cooled tryptophan analogs and their hydrogen-bonded complexes with methanol and water. The time-resolved fluorescence depletion technique of J. D. $McDonald^{2}$ is used to do Rotational Coherence Spectroscopy(TRFD-RCS). Results from TRFD-RCS yield excited stated rotational constants of these large jet-cooled speicies. Once accurate excited state rotational constants have been obtained and results from molecular mechanics calculations evaluated, the structure of the tryptophan analogs and their complexes can be determined.
Description
$^{1}$ (a) P.M. Felker, A. H. Zewail, J. Chem. Phys 86, 2460-2482 91987); (b) J. S. Baskin, P. M. Felker, and A. H. Zewail, J. Chem, Phys. 86, 2483-2499 (1987). $^{2}$ (a) M. J. Cote, J. F. Kauffman, P. G. Smith, and J. D. McDonald, J. Chem Phys. 90, 2865-2873 (1989); J. F. Kauffman, M. J. Cote, P. G. Smith, and J. D. McDonald. J. Chem, Phys. 90, 2874-2891 (1989)
Author Institution: Department of Chemistry and Biochemistry, University of California
Author Institution: Department of Chemistry and Biochemistry, University of California