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Reversible photoreduction of methylene blue in acrylate media containing benzyl dimethyl ketal

Paper ID Volume ID Publish Year Pages File Format Full-Text
27740 44039 2008 6 PDF Available
Title
Reversible photoreduction of methylene blue in acrylate media containing benzyl dimethyl ketal
Abstract

The reversible photoreduction of methylene blue in acrylate media is studied here. Methylene blue can be photoreduced using a benzyl dimethyl ketal photoinitiator upon 365 nm irradiation. The photoreduction is due to the interaction of methylene blue with methyl radical which is generated when benzyl dimethyl ketal is photocleaved. The photoreduced polyacrylate sample exhibits reversible photoreduction behavior due to the cyclic processes of oxidation in air and reduction in nitrogen upon UV exposure. Since methylene blue is widely used across many disciplines, our results have many potential applications in sensors, data storage, electronic devices, etc.

Keywords
Methylene blue; Benzyl dimethyl ketal; Photoreduction; Acrylate; Mechanism; Radical; Sensor; Red-ox; Color transition; Thiazine dyes
First Page Preview
Reversible photoreduction of methylene blue in acrylate media containing benzyl dimethyl ketal
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 195, Issues 2–3, 15 April 2008, Pages 378–383
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering