Abstract Poly[2-(acetoacetoxy)ethyl methacrylate] (PAEMA), a functional polymer bearing pendant β-keto ester group was prepared via atom transfer radical polymerization (ATRP). The polymers were characterized by 1H NMR, GPC and DSC analyses. 1H NMR analysis showed that β-keto ester group present in the side chain of the PAEMA was more in the keto form as compared to the enol form. The reactive pendant β-keto ester group of PAEMA reacted with cobalt(II) ion to form metallopolymer which was characterized by FT-IR, UV–vis, TGA, DSC, FESEM and TEM analyses. This cobalt-polymer complex showed the formation of nanogel, as observed by DLS analysis. Importantly, this cobalt-polymer complex showed superparamagnetic behavior, as observed via superconducting quantum interference device (SQUID) analysis, indicating its potential application in magnetic fluid hyperthermia treatment and radiotherapy.

中文翻译：

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使用定制的带有侧链 β-酮酯官能团的聚[2-(乙酰乙酰氧基)乙基甲基丙烯酸酯]的超顺磁性金属聚合物

摘要 通过原子转移自由基聚合（ATRP）制备了聚[2-（乙酰乙酰氧基）甲基丙烯酸乙酯]（PAEMA），一种带有β-酮酯侧基的功能聚合物。通过1H NMR、GPC和DSC分析表征聚合物。1H NMR 分析表明，与烯醇形式相比，PAEMA 侧链中存在的 β-酮酯基团更多地以酮形式存在。PAEMA 的反应性侧链 β-酮酯基团与钴 (II) 离子反应形成金属聚合物，通过 FT-IR、UV-vis、TGA、DSC、FESEM 和 TEM 分析对其进行表征。正如通过 DLS 分析所观察到的，这种钴-聚合物复合物显示出纳米凝胶的形成。重要的是，这种钴-聚合物复合物表现出超顺磁性，正如通过超导量子干涉装置 (SQUID) 分析所观察到的那样，