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|Title:||Dye-sensitized photooxygenation of diphenylamine in sodium dodecyle sulphate micellar solution|
|Authors:||Dahmiwal, N R|
|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].|
|Appears in Collections:||IJC-A Vol.30A(08) [August 1991]|
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