Ultrasonication-Induced Aqueous Atom Transfer Radical Polymerization,ACS Macro Letters

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Ultrasonication-Induced Aqueous Atom Transfer Radical Polymerization
ACS Macro Letters ( IF 5.1 ) Pub Date : 2018-02-16 00:00:00 , DOI: 10.1021/acsmacrolett.8b00027
Zhenhua Wang _{1,

2} , Zhanhua Wang ₁ , Xiangcheng Pan ₃ , Liye Fu ₂ , Sushil Lathwal ₂ , Mateusz Olszewski ₂ , Jiajun Yan ₂ , Alan E Enciso ₂ , Zongyu Wang ₂ , Hesheng Xia ₁ , Krzysztof Matyjaszewski ₂

Affiliation

A new procedure for ultrasonication-induced atom transfer radical polymerization (sono-ATRP) in aqueous media was developed. Polymerizations of oligo(ethylene oxide) methyl ether methacrylate (OEOMA) and 2-hydroxyethyl acrylate (HEA) in water were successfully carried out in the presence of ppm amounts of CuBr₂ catalyst and tris(2-pyridylmethyl)amine ligand when exposed to ultrasonication (40 kHz, 110 W) at room temperature. Aqueous sono-ATRP enabled polymerization of water-soluble monomers with excellent control over the molecular weight, dispersity, and high retention of chain-end functionality. Temporal control over the polymer chain growth was demonstrated by switching the ultrasound on/off due to the regeneration of activators by hydroxyl radicals formed by ultrasonication. The synthesis of a well-defined block copolymer and DNA–polymer biohybrid was also successful using this process.

中文翻译：

超声诱导水原子转移自由基聚合

开发了一种在水介质中超声诱导原子转移自由基聚合（sono-ATRP）的新方法。_{在 ppm 量的 CuBr 2}存在下，成功地在水中进行了低聚（环氧乙烷）甲基醚甲基丙烯酸酯 (OEOMA) 和丙烯酸 2-羟乙酯 (HEA) 的聚合反应在室温下暴露于超声波（40 kHz，110 W）时，催化剂和三（2-吡啶基甲基）胺配体。水性 sono-ATRP 能够实现水溶性单体的聚合，对分子量、分散性和链端官能团的高保留有出色的控制。由于通过超声处理形成的羟基自由基对活化剂的再生，通过打开/关闭超声来证明对聚合物链生长的时间控制。使用该工艺也成功地合成了定义明确的嵌段共聚物和 DNA-聚合物生物杂化物。

更新日期：2018-02-16

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