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TRIPLET ENERGY MIGRATION BETWEEN CARBONYL CHROMOPHORES IN MICELLAR SOLUTION *
Author(s) -
Scaiano J. C.,
Selwyn J. C.
Publication year - 1981
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1981.tb08956.x
Subject(s) - chemistry , flash photolysis , photochemistry , chromophore , micelle , acetophenone , sodium dodecyl sulfate , propiophenone , micellar solutions , kinetics , photodissociation , triplet state , ketyl , ketone , reaction rate constant , molecule , organic chemistry , benzophenone , catalysis , aqueous solution , physics , quantum mechanics
— Triplet energy transfer from acetophenone, propiophenone and isobutyrophenone to γ‐methylvalerophenone has been examined in micellar solution using laser flash photolysis techniques. The kinetics of the processes are controlled by the rates of sensitizer exit from the micelle and by the distribution of energy acceptors in the micellar phase. The photosensitized Norrish Type II cleavage in sodium dodecyl sulfate micelles provides an example of efficient quantum harvesting; the biradical produced in the reaction has a lifetime of 92 ns, which suggests that the biradical resides in a polar hydroxylic environment.