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Photodissociation Rate Constants of New Light Sensitive Alkoxyamines

✍ Scribed by Davy-Louis Versace; Jacques Lalevée; Jean-Pierre Fouassier; Yohann Guillaneuf; Denis Bertin; Didier Gigmes

Book ID
102495677
Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
404 KB
Volume
31
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

The photochemical properties of two new photocleavable alkoxyamines bearing a benzophenone‐derived chromophore were studied by electron spin resonance (ESR). The CO bond cleavage has been demonstrated and the photolysis rate constants (k~d~) determined over a large range of light intensity through the monitoring of the nitroxide concentration in aerated conditions. The obtained kinetic data highlight for the first time the linear dependence of k~d~ on the light intensity for alkoxyamines: this should be a driving factor for nitroxide mediated radical photopolymerization (NMP^2^).

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