Photodissociation Rate Constants of New Light Sensitive Alkoxyamines | Zendy

Versace DavyLouis | Zendy; Lalevée Jacques | Zendy; Fouassier JeanPierre | Zendy; Guillaneuf Yohann | Zendy; Bertin Denis | Zendy; Gigmes Didier | Zendy

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Photodissociation Rate Constants of New Light Sensitive Alkoxyamines

Author(s) -

Versace DavyLouis,

Lalevée Jacques,

Fouassier JeanPierre,

Guillaneuf Yohann,

Bertin Denis,

Gigmes Didier

Publication year - 2010

Publication title -

macromolecular rapid communications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 154

eISSN - 1521-3927

pISSN - 1022-1336

DOI - 10.1002/marc.201000144

Subject(s) - photopolymer , nitroxide mediated radical polymerization , chromophore , photodissociation , photochemistry , benzophenone , electron paramagnetic resonance , reaction rate constant , chemistry , kinetics , radical polymerization , polymerization , polymer , nuclear magnetic resonance , organic chemistry , physics , quantum mechanics

The photochemical properties of two new photocleavable alkoxyamines bearing a benzophenone‐derived chromophore were studied by electron spin resonance (ESR). The CO 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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