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Proceedings Paper

Picosecond Raman Spectroscopy And Electron Transfer In Condensed Systems
Author(s): J. A. Hutchinson; J . DiBenedetto; E. F. Hilinski; J. B. Hopkins; P. M. Rentzepis
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Paper Abstract

The nature of the electron donor/acceptor (EDA) excited state surface leading to the charge transfer (CT) complex is investigated by picosecond techniques. Irradiation into the CT band of the EDA complexes cyanoanthracene/tetracyanoethylene [CNA, TCNE] and indene/ tetracyanoethylene [IN, TCNE] produces the respective radical ion pairs within 25 psec, which then decay within 60 psec, with the [CNA, TCNE] couple returning directly to the ground state, while the [IN, TCNE] couple passes through a 500 psec lived intermediate before returning to the ground state. To obtain structural information about these complexes, a 5 kHz amplified cavity dumped sync pumped dye laser (-v5 psec) resonance Raman spectrometer using a flowing sample jet has been developed. Preliminary work on trans stilbene shows excellent signal to noise and an S1 decay of ~1000 psec, in agreement with literature values.

Paper Details

Date Published: 30 June 1986
PDF: 9 pages
Proc. SPIE 0620, Laser Applications in Chemistry and Biophysics, (30 June 1986); doi: 10.1117/12.961130
Show Author Affiliations
J. A. Hutchinson, University of California (United States)
J . DiBenedetto, University of California (United States)
E. F. Hilinski, Florida State University (United States)
J. B. Hopkins, Louisiana State University (United States)
P. M. Rentzepis, AT&T Bell Laboratories (United States)

Published in SPIE Proceedings Vol. 0620:
Laser Applications in Chemistry and Biophysics
Mostafa A. El-Sayed, Editor(s)

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