Structural effects on the photodissociation of alkoxyamines

被引：30

作者：

Versace, Davy-Louis ^{[1
]}

Guillaneuf, Yohann ^{[2
,3
,4
]}

Bertin, Denis ^{[2
,3
,4
]}

Fouassier, Jean Pierre ^{[1
]}

Lalevee, Jacques ^{[1
]}

Gigmes, Didier ^{[2
,3
,4
]}

机构：

[1] Univ Haute Alsace, EN SCMu, CNRS, Dept Photochim, F-68093 Mulhouse, France

[2] Univ Aix Marseille 1, Fac Sci & Tech, Equipe CROPS, CNRS,UMR 6264,Lab Chim Provence, F-13397 Marseille 20, France

[3] Univ Aix Marseille 2, Fac Sci & Tech, Equipe CROPS, CNRS,UMR 6264,Lab Chim Provence, F-13397 Marseille 20, France

[4] Univ Aix Marseille 3, Fac Sci & Tech, Equipe CROPS, CNRS,UMR 6264,Lab Chim Provence, F-13397 Marseille 20, France

来源：

ORGANIC & BIOMOLECULAR CHEMISTRY | 2011年 / 9卷 / 08期

关键词：

LIVING RADICAL POLYMERIZATION; HIGHLY EFFICIENT; PHOTOINITIATORS; BENZOPHENONE;

D O I：

10.1039/c0ob01207f

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The search for photosensitive alkoxyamines represents a huge challenge. The key parameters governing the cleavage process remain unknown. The dissociation process of light sensitive alkoxyamines is studied as a function of their chemical structures. The photochemical properties of 6 selected compounds are investigated by ESR and laser flash photolysis. It is found that (i) the selectivity of the cleavable N-O vs. C-O bond and (ii) the efficiency of the nitroxide formation are strongly related to the alkoxyamine structure. The distance between the chromophore and the aminoxy group is a key parameter for an efficient pathway of the radical generation as displayed by the photopolymerization ability of these alkoxyamines.

引用

页码：2892 / 2898

页数：7

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