Copper photoredox catalysts for polymerization upon near UV or visible light: structure/reactivity/efficiency relationships and use in LED projector 3D printing resins

被引：92

作者：

Al Mousawi, Assi ^{[1
,2
]}

Kermagoret, Anthony ^{[3
]}

Versace, Davy-Louis ^{[4
]}

Toufaily, Joumana ^{[2
]}

Hamieh, Tayssir ^{[2
]}

Graff, Bernadette ^{[1
]}

Dumur, Frederic ^{[3
]}

Gigmes, Didier ^{[3
]}

Fouassier, Jean Pierre ^{[1
]}

Lalevee, Jacques ^{[1
]}

机构：

[1] Inst Sci Mat Mulhouse IS2M, UMR CNRS 7361, UHA, 15,Rue Jean Starcky, F-68057 Mulhouse, France

[2] Univ Libanaise, Lab Mat Catalyse, Environm & Methodes Analyt MCEMA CHAMSI, EDST, Campus Hariri, Beirut, Lebanon

[3] Aix Marseille Univ, CNRS, Inst Chim Radicalaire ICR, UMR 7273, F-13397 Marseille, France

[4] Univ Paris Est Creteil UPEC, ICMPE UMR CNRS 7182, 61,Ave Gen Gaulle, F-94010 Creteil, France

来源：

POLYMER CHEMISTRY | 2017年 / 8卷 / 03期

关键词：

TRANSFER RADICAL POLYMERIZATION; PET-RAFT POLYMERIZATION; CU-BASED SENSITIZERS; IRIDIUM COMPLEXES; PHOTOINDUCED ATRP; CU(I) COMPLEXES; PHOTOPOLYMERIZATION; PHOTOINITIATOR; ELECTRON; PHOTOCATALYSIS;

D O I：

10.1039/c6py01958g

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理];

摘要：

Copper complexes (CuCs) bearing pyridine-pyrazole ligands are synthesized and evaluated as new photoredox catalysts/photoinitiators in combination with an iodonium salt (Iod) for the free radical polymerization of (meth) acrylates and the cationic polymerization of epoxides upon visible light exposure using a Light Emitting Diode (LED)@405 nm. The structure/reactivity/efficiency relationships for the copper complexes are studied as well as the chemical mechanisms involved. The different substituents on the pyrazole moiety of the ligand allow tuning of the oxidation potential and the visible light absorbance of the complexes and to optimize the performance of the polymerization photoredox catalysts. The use of a novel additive (CARET) in a three-component system (CuC/Iod/CARET) highly improves the performance. Finally, the high performances of the Cu(I) complexes for the development of new 3D printing resins using an LED projector are demonstrated. Currently, LED projector printing is really advantageous in 3D printing i.e. this technology projects the profile of an entire layer at one time.

引用

页码：568 / 580

页数：13

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