Iridium Photocatalysts in Free Radical Photopolymerization under Visible Lights

被引：131

作者：

Lalevee, Jacques ^{[1
]}

Tehfe, Mohamad-Ali ^{[1
]}

Dumur, Frederic ^{[2
]}

Gigmes, Didier ^{[2
]}

Blanchard, Nicolas ^{[3
]}

Morlet-Savary, Fabrice ^{[1
]}

Fouassier, Jean Pierre

机构：

[1] ENSCMu UHA, LRC CNRS 7228, Inst Sci Mat Mulhouse IS2M, F-68057 Mulhouse, France

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

[3] Univ Haute Alsace, ENSCMu, Organ & Bioorgan Chem Lab, F-68093 Mulhouse, France

来源：

ACS MACRO LETTERS | 2012年 / 1卷 / 02期

关键词：

PHOTOREDOX ORGANOCATALYSIS; SILYL RADICALS; ALDEHYDES; ELECTRON; PHOTOINITIATORS; POLYMERIZATION; CATALYSIS; CLEAVAGE;

D O I：

10.1021/mz2001753

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of iridium(III) complexes was designed and investigated as new potential photocatalysts for radical polymerization reactions. The photocatalytic reduction cycle involves the combination of an iridium complex with an amine (e.g., N-methyldiethanolamine) and an alkyl halide (e.g., phenacylbromide). The different three-component systems herein investigated are very attractive for acrylate polymerization upon visible light irradiation. They are much more reactive than those based on Ru(bpy)(3)(2+). Free radicals generated during the reaction were investigated by ESR spectroscopy and the chemical mechanisms are discussed. The crucial role played by the photocatalyst (reduction ability and excited state lifetime) is also demonstrated.

引用

页码：286 / 290

页数：5

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