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Title: Dye-sensitized photooxygenation of diphenylamine in sodium dodecyle sulphate micellar solution
Authors: Dahmiwal, N R
Grewal, Daisy
Issue Date: Aug-1991
Publisher: NISCAIR-CSIR, India
Abstract: A kinetic study of methylene blue (MB) sensitized photooxygenation of diphenylamine (DPA) in sodium dodecyl sulphate micellar solution has been shown to give N-phenyl-p-benzoquinoneimine (PBQ) as the only primary coloured product. The steady state rate expressions based on a likely mechanism have been derived. The data fit well into these equations showing both the singlet oxygen and electron transfer pathways, the relative efficiency of which depends upon the [DPA].The effect of varying dielectric and [O2] further supports the postulated mechanism. The deactivation of triplet MB by dimeric dye species (MB)2 has been postulated at higher [MB].
Page(s): 660-664
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.30A(08) [August 1991]

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