Oxygen‐Initiated and Regulated Controlled Radical Polymerization under Ambient Conditions,Angewandte Chemie International Edition

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Oxygen‐Initiated and Regulated Controlled Radical Polymerization under Ambient Conditions
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-07-04 , DOI: 10.1002/anie.201805212
Chunna Lv ₁ , Congze He ₁ , Xiangcheng Pan ₁

Affiliation

A rapid oxygen‐initiated and ‐regulated controlled radical polymerization was conducted under ambient temperature and atmosphere. The reaction between triethylborane and oxygen provides ethyl radicals, which initiate and mediate the radical polymerization. The controlled radical polymerization was achieved using RAFT chain transfer agents (CTA) without any process of removing oxygen, providing well‐defined polymers with almost full conversion (>95 %) in a short period (15 min). High‐throughput screening was used to discover the suitable conditions for various CTA and monomers. To show the versatility of this method, a polymer library containing 25 well‐defined polymers with different compositions (block and statistical copolymers) and molecular weights were synthesized in 1 h via high‐throughput synthesis technique. A polymer‐painting technique was developed using this method, forming films with spatial control and excellent control in molecular weight and dispersity.

中文翻译：

在环境条件下氧气引发和调节的受控自由基聚合

在环境温度和大气条件下进行了快速的氧引发和调节的受控自由基聚合。三乙基硼烷与氧气之间的反应提供了乙基，该乙基引发和介导自由基聚合。使用RAFT链转移剂（CTA）可实现受控的自由基聚合，而无需任何除氧过程，可在短时间内（15分钟）提供定义明确的聚合物，其几乎完全转化（> 95％）。高通量筛选用于发现各种CTA和单体的合适条件。为了显示该方法的多功能性，通过高通量合成技术，在1小时内合成了一个包含25种定义明确的，具有不同组成（嵌段共聚物和统计共聚物）和分子量的聚合物的聚合物库。

更新日期：2018-07-04

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