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Preparation of graphene/poly(2-acryloxyethyl ferrocenecarboxylate) nanocomposite via a “grafting-onto” strategy
Polymer Chemistry ( IF 4.6 ) Pub Date : 2017-12-04 00:00:00 , DOI: 10.1039/c7py01932g
Xue Jiang 1, 2, 3, 4, 5 , Yan Deng 1, 2, 3, 4, 5 , Wenbin Liu 5, 6, 7, 8 , Yongjun Li 1, 2, 3, 4, 5 , Xiaoyu Huang 1, 2, 3, 4, 5
Affiliation  

Graphene is of great significance for applications of fabricating new functional materials, due to its unique physical and chemical structure and properties. Modification of graphene with different polymeric chains has been widely investigated by a range of synthetic methods to extend its application. An efficient way to prepare 2,2,6,6-tetramethylpiperidine-1-oxyl-functionalized graphene sheets (GS-TEMPO), which can be used as grafting sites, has been reported by our group. Herein, Br-terminated poly(2-acryloxyethyl ferrocenecarboxylate) (PAEFC) homopolymers prepared by atom transfer radical polymerization (ATRP) were selected as the grafted brushes to be anchored on the surface of GS-TEMPO via atom transfer nitroxide radical coupling (ATNRC) chemistry for construction of functional electrochemical platforms. The product of the grafting reaction, graphene-PAEFC (GS-PAEFC) nanocomposite, was characterized by 1H-NMR, FT-IR, XPS, TGA, DTG, TEM and AFM. Cyclic voltammetry (CV) measurements show that the redox responsiveness of PAEFC is retained after surface functionalization. Moreover, GS-PAEFC nanohybrids are dispersible and stable in a wider range of organic solvents than the graphene oxide precursor nanosheets, paving the way for the development of smart nanocomposites.

中文翻译:

通过“接枝”策略 制备石墨烯/聚(2-丙烯酰氧基乙基二茂铁羧酸酯)纳米复合材料

石墨烯因其独特的物理和化学结构与性能,对于制造新型功能材料具有重要意义。已经通过一系列合成方法广泛地研究了用不同的聚合物链对石墨烯的改性,以扩展其应用。我们的小组报告了一种有效的方法来制备2,2,6,6-四甲基哌啶-1-氧基官能化的石墨烯片(GS-TEMPO),该片可用作接枝位点。在此,选择通过原子转移自由基聚合(ATRP)制备的溴封端的聚(2-丙烯酰氧基乙基二茂铁羧酸二甲酯)(PAEFC)均聚物作为接枝刷,将其固定在GS-TEMPO的表面上原子转移氮氧化物自由基偶联(ATNRC)化学用于功能电化学平台的构建。接枝反应产物石墨烯-PAEFC(GS-PAEFC)纳米复合材料的特征在于1 H-NMR,FT-IR,XPS,TGA,DTG,TEM和AFM。循环伏安法(CV)测量表明,PAEFC的氧化还原反应性在表面功能化后得以保留。此外,与氧化石墨烯前体纳米片相比,GS-PAEFC纳米杂化物在更广泛的有机溶剂中具有分散性和稳定性,为智能纳米复合材料的开发铺平了道路。
更新日期:2017-12-04
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