Benzylbenzoin benzyl ethers as new photoinitiators

Benzylbenzoin benzyl ethers as new photoinitiators The title benzoins are prepared and their photochemistry has been investigated. Product analysis studies indicate that the benzoin undergoes Norrish Type I photocleavage to generate benzoyl and benzyloxybenzyl radical, followed by thermal fragmentation to produce deoxybenzoin thereby generating benzyl radical. All three transient species are actually detected and characterized by laser flash photolysis of the benzoin in solution at room temperature. The efficiency of the benzoins as photoinitiator has been also investigated. Effects of ring substituents and polycyclic aromatic rings on the photoreactivity have been revealed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals
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Publisher
Brill Academic Publishers
Copyright
Copyright © 2001 by VSP 2001
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1163/156856701745122
Publisher site
See Article on Publisher Site

Abstract

The title benzoins are prepared and their photochemistry has been investigated. Product analysis studies indicate that the benzoin undergoes Norrish Type I photocleavage to generate benzoyl and benzyloxybenzyl radical, followed by thermal fragmentation to produce deoxybenzoin thereby generating benzyl radical. All three transient species are actually detected and characterized by laser flash photolysis of the benzoin in solution at room temperature. The efficiency of the benzoins as photoinitiator has been also investigated. Effects of ring substituents and polycyclic aromatic rings on the photoreactivity have been revealed.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Oct 13, 2004

References

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