Picosecond Raman Spectroscopy And Electron Transfer In Condensed Systems

J. A. Hutchinson; J . DiBenedetto; E. F. Hilinski; J. B. Hopkins; P. M. Rentzepis

doi:10.1117/12.961130

30 June 1986 Picosecond Raman Spectroscopy And Electron Transfer In Condensed Systems

J. A. Hutchinson, J . DiBenedetto, E. F. Hilinski, J. B. Hopkins, P. M. Rentzepis

Proceedings Volume 0620, Laser Applications in Chemistry and Biophysics; (1986) https://doi.org/10.1117/12.961130
Event: O-E/LASE'86 Symposium, 1986, Los Angeles, CA, United States

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.

Citation Download Citation

J. A. Hutchinson, J . DiBenedetto, E. F. Hilinski, J. B. Hopkins, and P. M. Rentzepis "Picosecond Raman Spectroscopy And Electron Transfer In Condensed Systems", Proc. SPIE 0620, Laser Applications in Chemistry and Biophysics, (30 June 1986); https://doi.org/10.1117/12.961130

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