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- W2091817179 abstract "High pressures of cis -butene-2 interact with an excited state, postulated to be the singlet, of hexafluoroacetone in such a way as to inhibit the decomposition of the ketone but to yield only small, and perhaps negligible, amounts of isomerization (part III). Studies of the undispersed emission support the hypothesis that the singlet state is involved ; when present at high pressures both isobutene and cis -butene-2 reduce the fluorescence yield to zero. The fluorescence spectrum is decreased in intensity, but essentially unchanged in shape, in the presence of moderate amounts of biacetyl. Quantitative measurements of both these effects were made and values for the rate constants for the quenching of the singlet state were derived. An approximate value of the quenching constant obtained from work on the decomposition in the presence of cis -butene-2 agreed as to order of magnitude with that derived from the emission study." @default.
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- W2091817179 date "1968-09-24" @default.
- W2091817179 modified "2023-09-24" @default.
- W2091817179 title "The primary process in the photolysis of hexafluoroacetone vapour IV. Identification of singlet quenching addends" @default.
- W2091817179 doi "https://doi.org/10.1098/rspa.1968.0167" @default.
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