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Resonance Light Scattering: A New Technique for Studying Chromophore Aggregation

Robert F. Pasternack and Peter J. Collings
Science
New Series, Vol. 269, No. 5226 (Aug. 18, 1995), pp. 935-939
Stable URL: http://www.jstor.org/stable/2887701
Page Count: 5
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Resonance Light Scattering: A New Technique for Studying Chromophore Aggregation
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Abstract

Light scattering experiments are usually performed at wavelengths away from absorption bands, but for species that aggregate, enhancements in light scattering of several orders of magnitude can be observed at wavelengths characteristic of these species. Resonance light scattering is shown to be a sensitive and selective method for studying electronically coupled chromophore arrays. The approach is illustrated with several examples drawn from porphyrin and chlorin chemistry. The physical principles underlying resonance light scattering are discussed, and the advantages and limitations of the technique are reviewed.

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