文献类型：期刊文献

英文题名：Preparation of graphene/poly(2-hydroxyethyl acrylate) nanohybrid materials via an ambient temperature "grafting-from" strategy

作者：Liu, Zhanzhan[1,2];Zhu, Shaojia[3];Li, Yongjun[1,4];Li, Yongsheng[2];Shi, Ping[3];Huang, Zhong[1];Huang, Xiaoyu[1]

机构：[1]Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Synthet & Self Assembly Chem Organ Funct, Shanghai 200032, Peoples R China;[2]E China Univ Sci & Technol, Sch Mat Sci & Engn, Lab Low Dimens Mat Chem, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[4]Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China

年份：2015

卷号：6

期号：2

起止页码：311

外文期刊名：POLYMER CHEMISTRY

收录：;EI(收录号：20145100330930);WOS:【SCI-EXPANDED(收录号:WOS:000346049200016)】；

基金：The authors thank the financial support from National Natural Science Foundation of China (21204098, 51172070, and 51132009), Program for New Century Excellent Talents in University (NCET-10-0379), Shanghai Scientific and Technological Innovation Project (11nm0501100, 11ZR1445900, 12JC1410500, 14520720100, and 14520720700), Shu Guang Project (11SG30), State Key Laboratory of Molecular Engineering of Polymers (K2013-13), State Key Laboratory of Bioreactor Engineering (2060204), and Fundamental Research Funds for the Central Universities (222201313010).

语种：英文

外文关键词：Nanostructured materials - Free radical reactions - Grafting (chemical) - Living polymerization - Solubility

摘要：Graphene has emerged to be a promising material due to its unique structure and two-dimensional and extensively conjugated surface. However, graphene tends to aggregate in an almost irreversible manner, it is therefore useful to modify carbon sheets to achieve solubility for further applications. Herein, we report a new graphene/polymer nanohybrid material, graphene/poly(2-hydroxyethyl acrylate) (G-PHEA), aiming to improve its solubility in regular solvents. The preparation of PHEA polymer brushes on the surfaces of reduced graphene oxide sheets was accomplished by in situ single-electron transfer living radical polymerization (SET-LRP) under mild conditions via the "grafting-from" strategy. Initiating groups containing graphene sheets were prepared by a diazonium reaction followed by esterification for attaching Br-containing initiating groups onto the surface of graphene. Surface-initiated SET-LRP of 2-hydroxylethyl acrylate was performed in DMSO in the presence of a Cu wire/Me6TREN catalytic system at room temperature to form G-PHEA nanohybrid material. FT-IR, XRD, Raman, TGA, AFM, and TEM measurements showed the efficient PHEA-functionalized covalent modification of graphene with good dispersibility in organic solvents and aqueous media. This kind of nanohybrid material is not cytotoxic by itself and could quickly enter into SMMC-7721 and SH-SY5Y cells.