Tribochemically Controlled Atom Transfer Radical Polymerization Enabled by Contact Electrification

被引：24

作者：

Wang, Chen ^{[1
,2
]}

Zhao, Ruoqing ^{[1
,2
]}

Fan, Wenru ^{[1
,2
]}

Li, Lei ^{[1
,2
]}

Feng, Haoyang ^{[1
,2
]}

Li, Zexuan ^{[1
,2
]}

Yan, Ci ^{[1
,2
]}

Shao, Xiaoyang ^{[1
,2
]}

Matyjaszewski, Krzysztof ^{[3
]}

Wang, Zhenhua ^{[1
,2
]}

机构：

[1] Northwestern Polytech Univ, Frontiers Sci Ctr Flexible Elect, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Xian Inst Biomed Mat & Engn IBME, Xian 710072, Peoples R China

[3] Carnegie Mellon Univ, Dept Chem, 4400 Fifth Ave, Pittsburgh, PA 15213 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2023年 / 62卷 / 37期

基金：

中国国家自然科学基金;

关键词：

Atom Transfer Radical Polymerization; Contact Electrification; Friction; Mechanochemistry; Titanium Oxide; SONO-RAFT POLYMERIZATION; ATRP; TRIBOELECTRIFICATION; ENERGY; FLOW;

D O I：

10.1002/anie.202309440

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Traditional mechanochemically controlled reversible-deactivation radical polymerization (RDRP) utilizes ultrasound or ball milling to regenerate activators, which induce side reactions because of the high-energy and high-frequency stimuli. Here, we propose a facile approach for tribochemically controlled atom transfer radical polymerization (tribo-ATRP) that relies on contact-electro-catalysis (CEC) between titanium oxide (TiO2) particles and CuBr2/tris(2-pyridylmethylamine (TPMA), without any high-energy input. Under the friction induced by stirring, the TiO2 particles are electrified, continuously reducing CuBr2/TPMA into CuBr/TPMA, thereby conversing alkyl halides into active radicals to start ATRP. In addition, the effect of friction on the reaction was elucidated by theoretical simulation. The results indicated that increasing the frequency could reduce the energy barrier for the electron transfer from TiO2 particles to CuBr2/TPMA. In this study, the design of tribo-ATRP was successfully achieved, enabling CEC (ca. 10 Hz) access to a variety of polymers with predetermined molecular weights, low dispersity, and high chain-end fidelity.

引用

页数：7

共 54 条

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