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Photoreaction and photopolymerization studies on phenoxazin dyes/diphenyliodonium chloride salt

Paper ID Volume ID Publish Year Pages File Format Full-Text
28182 44063 2007 7 PDF Available
Title
Photoreaction and photopolymerization studies on phenoxazin dyes/diphenyliodonium chloride salt
Abstract

The photophysics and photochemistry of the dyes resazurin (Rz) and resorufin (Rf) in absence and presence of diphenyliodonium chloride (DPIC) were investigated in water at pH 10. The dye/DPIC combination undergoes photoreaction via intermolecular electron transfer, resulting in photobleaching of the dye and generation of active radical species released by subsequent decomposition of DPIC. The polymerization of acrylamide in aqueous solution on visible irradiation in the presence of resazurin without the onium salt was negligible. However, it proceeds efficiently in the presence of DPIC. The polymerization follows a typical radical chain mechanism with second order termination. In the case of Rf/DPIC the photobleaching is very important, and no appreciable polymerization occurs.

Keywords
Dyes; Photopolymerization; Electron transfer; Acrylamide; Iodonium salt
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Photoreaction and photopolymerization studies on phenoxazin dyes/diphenyliodonium chloride salt
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 188, Issue 1, 30 April 2007, Pages 83–89
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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