Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 18 August 1989:
Vol. 245. no. 4919, pp. 736 - 738
DOI: 10.1126/science.245.4919.736
Prev | Table of Contents | Next

Articles

A Rotationally Resolved Fluorescence Excitation Spectrum of all-trans-1,4-Diphenyl-1,3-butadiene

J. F. PFANSTIEL 1, B. B. CHAMPAGNE 1, W. A. MAJEWSI 1, D. F. PLUSQUELLIC 1, and D. W. PRATT 1

1 Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260

Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260

Band 1 in the jet-cooled one-photon S1 larr S0 fluorescence excitation spectrum of all-trans-1,4-diphenyl-1,3-butadiene has been rotationally resolved with a molecular beam laser spectrometer. Both the orientation of the optical transition moment and the rotational constants of the two vibronic levels have been measured. The molecule shows no evidence of being significantly distorted from a C24 geometry when it is low in the vibrational manifolds of either of the two electronic states.

Submitted on April 11, 1989
Accepted on June 2, 1989

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)