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首页> 外文期刊>ACS Macro Letters >Cleaning the Click: A Simple Electrochemical Avenue for Copper Removal from Strongly Coordinating Macromolecules
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Cleaning the Click: A Simple Electrochemical Avenue for Copper Removal from Strongly Coordinating Macromolecules

机译：清洁点击：从强配位大分子中去除铜的简单电化学途径

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摘要

We introduce a novel electrochemical method for the purification of complex water-soluble functional polymers contaminated with copper salts originating from copper-catalyzed azide/alkyne ligation chemistry, for which no standard purification protocol is suitable. A triethylene glycol methyl ether methacrylate (TEGMA) star polymer with 2-ureido-4H-pyrimidone (UPy) end groups was prepared via an activator generated by electron transfer atom transfer radical polymerization (AGET ATRP) and copper-catalyzed azide/alkyne cycloaddition (CuAAc) and selected as a model system for electrolysis of an aqueous polymer solution. We systematically investigate the influence of sample concentration, voltage, and time of electrolysis on the quality of the purification. Atom emission spectroscopy (AES) reveals almost quantitative removal of copper, and size exclusion chromatography (SEC) as well as proton nuclear magnetic resonance spectroscopy (H-1 NMR) ensure the full integrity of the polymer under all selected conditions.
机译：我们介绍了一种新颖的电化学方法，用于纯化被铜催化的叠氮化物/炔烃连接化学所衍生的被铜盐污染的复杂水溶性功能聚合物，该方法不适用于标准纯化方案。通过电子转移原子转移自由基聚合（AGET ATRP）和铜催化的叠氮化物/炔烃环加成反应生成的活化剂制备具有2-脲基-4H-嘧啶酮（UPy）端基的三乙二醇甲基醚甲基丙烯酸酯（TEGMA）星型聚合物（并被选作电解聚合物水溶液的模型系统。我们系统地研究了样品浓度，电压和电解时间对纯化质量的影响。原子发射光谱（AES）揭示了铜的几乎定量去除，尺寸排阻色谱（SEC）以及质子核磁共振光谱（H-1 NMR）可确保在所有选定条件下聚合物的完整完整性。

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