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Volume 67, 1971
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Triplet-triplet extinction coefficients via energy transfer


The triplet-triplet extinction coefficients of seventeen compounds have been determined in cyclohexane and benzene at room temperature by a method involving energy transfer. Large changes in extinction coefficient at the wavelength maximum ε(λmax) were observed upon changing solvent from cyclohexane to benzene. Values of ε(λmax) were determined relative to a value of ε(λmax) for the ketyl radical (ϕ2ĊOH) of 3220 M–1 cm–1 in water, assuming no change of oscillator strength with solvent. A number of triplet transfer rates, and other reactivities of benzophenone triplet and ketyl radicals, were also estimated.

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Article type: Paper
DOI: 10.1039/TF9716701904
Citation: Trans. Faraday Soc., 1971,67, 1904-1915
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    Triplet-triplet extinction coefficients via energy transfer

    R. Bensasson and E. J. Land, Trans. Faraday Soc., 1971, 67, 1904
    DOI: 10.1039/TF9716701904

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