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Excited Singlet and Triplet pK Values of Xanthone in Aqueous Solution

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dc.contributor.author Ireland, J. F.
dc.contributor.author Wyatt, P. A. H.
dc.date.accessioned 2025-02-08T02:47:11Z
dc.date.available 2025-02-08T02:47:11Z
dc.date.issued 1972
dc.identifier.uri http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17392
dc.description.abstract Xanthone, which Ikis a ground state pK of -4.1, is shown to have a pK^j) value of +0.96 by fluorescence intensity measurements and a pK(7\) of +3.0 by triplet-triplet absorption measurements. The unusual order pK(7\) >pK(5i) >pK(5’0) is also reproduced in the Forster cycle values calculated from the absorption, fluorescence, and phosphorescence maxima, though the numbers thus obtained for pK(Ti) and pKGS^) arc 2 to 3 units more positive. Forster’s Cycle applied to the triplettriplet absorption spectra of the protonated and unprotonated species indicates that pK(T2) is —0.7, so that in basic strength the second triplet state lies between So and S1. en_US
dc.language.iso en en_US
dc.publisher Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (6) en_US
dc.subject Chemistry en_US
dc.subject Xanthone en_US
dc.subject Aqueous Solution en_US
dc.subject Journal of the Chemical Society : Faraday Transaction - I en_US
dc.title Excited Singlet and Triplet pK Values of Xanthone in Aqueous Solution en_US
dc.type Article en_US


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