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Triplet quenching of polycyclic hydrocarbons by electron acceptors

โœ Scribed by V.A. Kuzmin; I.V. Renge; Yu.E. Borisevich

Book ID
103019642
Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
495 KB
Volume
70
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

The rate constants for triplet quenching of polycychc aromatx hydrocarbons by substituted nitro-benzenes and qtione m solution have been determined usmg flash photolysls measurements. The quenching constants and activation energies depend only on the proxunity of charge transfer level to hydrocarbon triplet level of any quencher-quenchee pair. It has beea estabbshed that triplet deactivation IS induced by an exclplex.

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Fluorescence quenching of alternant and
Fluorescence quenching of alternant and non-alternant polycyclic hydrocarbons by electron transfer
โœ U. Breymann; H. Dreeskamp; E. Koch; M. Zander ๐Ÿ“‚ Article ๐Ÿ“… 1978 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 220 KB

Rate constants of tluorescence quenching by electron acceptors are greater for altemant than for non-altemant hydrocarbons with equal E,-o. The reverse is true for quenching by electron donors. This is consistent with the towering of the worbital ener&s of non-altemant compared to aftemant polycycti