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Proceedings Paper

Time-resolved Raman spectroscopy of excited-state porphyrins
Author(s): Steven E.J. Bell; Ala H.R. Al-Obaidi; Martin Hegarty; Colin Lefly; Ronald E. Hester; John J. McGarvey
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Paper Abstract

Time-resolved resonance Raman spectroscopy has been used to probe the lowest excited singlet and triplet states of free-base meso-tetraarylporphyrins. Both single-color and two-color time-resolved techniques have been used to probe the excited singlet states, while the triplet spectra were obtained in two-color experiments with a time-delay between pump and probe lasers of 30 ns. Marker bands for each of these three states have been identified. The information which qualitative analysis of the Raman spectra can give on the structural differences between these excited states is discussed.

Paper Details

Date Published: 17 June 1993
PDF: 5 pages
Proc. SPIE 1921, Laser Spectroscopy of Biomolecules, (17 June 1993); doi: 10.1117/12.146128
Show Author Affiliations
Steven E.J. Bell, Queen's Univ. of Belfast (United Kingdom)
Ala H.R. Al-Obaidi, Queen's Univ. of Belfast (United Kingdom)
Martin Hegarty, Queen's Univ. of Belfast (United Kingdom)
Colin Lefly, Univ. of York (United Kingdom)
Ronald E. Hester, Univ. of York (United Kingdom)
John J. McGarvey, Queen's Univ. of Belfast (United Kingdom)

Published in SPIE Proceedings Vol. 1921:
Laser Spectroscopy of Biomolecules
Jouko E. Korppi-Tommola, Editor(s)

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