Preparation of graphene/poly(2-hydroxyethyl acrylate) nanohybrid materials via an ambient temperature “grafting-from” strategy

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