通过电子转移生成铁介导的活化剂用于原子转移自由基聚合对碳纳米管进行表面改性。
Surface modification of carbon nanotubes by using iron-mediated activators generated by electron transfer for atom transfer radical polymerization.
作者信息
Wang Yingjie, Tian Chun, Jiang Hongjuan, Zhang Lifen, Zhu Xiulin
机构信息
Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
Changzhou Huake Polymers Co., Ltd. No. 602 Yulong Road, Xinbei District Changzhou 213125 China.
出版信息
RSC Adv. 2018 Mar 21;8(20):11150-11156. doi: 10.1039/c8ra00988k. eCollection 2018 Mar 16.
Herein, a surface-initiated activator generated by electron transfer for an atom transfer radical polymerization (AGET ATRP) system was developed on the surface of multiwall carbon nanotubes (MWCNTs) by using FeCl·6HO as the catalyst, tris-(3,6-dioxoheptyl) amine (TDA-1) as the ligand and ascorbic acid (AsAc) as the reducing agent. A wide range of polymers, such as polystyrene (PS), poly(methyl methacrylate) (PMMA) and poly(poly(ethylene glycol) methyl ether methacrylate) (PPEGMA), were successfully grafted onto the surfaces. The core-shell structure of MWCNTs@PS was observed by TEM. Both Raman spectra and the results of hydrolysis of MWCNTs@PS (after extraction by THF) confirmed that the PS chains were covalently tethered onto the surfaces of the MWCNTs. Due to superior biocompatibility of the iron catalyst, the strategy of modification of MWCNTs iron-mediated AGET ATRP provided a promising method for the controllable and biocompatible modification of nanomaterials.
在此，通过使用FeCl₃·6H₂O作为催化剂、三（3,6 - 二氧代庚基）胺（TDA - 1）作为配体以及抗坏血酸（AsAc）作为还原剂，在多壁碳纳米管（MWCNTs）表面开发了一种用于原子转移自由基聚合（AGET ATRP）体系的表面引发电子转移生成的活化剂。多种聚合物，如聚苯乙烯（PS）、聚甲基丙烯酸甲酯（PMMA）和聚（聚乙二醇）甲基醚甲基丙烯酸酯（PPEGMA），成功接枝到了表面。通过透射电子显微镜（TEM）观察到了MWCNTs@PS的核壳结构。拉曼光谱以及MWCNTs@PS（经四氢呋喃（THF）萃取后）的水解结果均证实PS链共价连接在了MWCNTs的表面。由于铁催化剂具有优异的生物相容性，基于铁介导的AGET ATRP对MWCNTs进行改性的策略为纳米材料的可控和生物相容性改性提供了一种有前景的方法。
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