文献类型：期刊文献

英文题名：Functionalization of reduced graphene oxide nanosheets via stacking interactions with the fluorescent and water-soluble perylene bisimide-containing polymers

作者：Xu, Li Qun[1];Wang, Liang[1];Zhang, Bin[2];Lim, Chee Hong[1];Chen, Yu[2];Neoh, Koon-Gee[1];Kang, En-Tang[1];Fu, Guo Dong[3]

机构：[1]Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 119260, Singapore;[2]E China Univ Sci & Technol, Inst Appl Chem, Shanghai 200237, Peoples R China;[3]Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Jiangsu Prov, Peoples R China

年份：2011

卷号：52

期号：11

起止页码：2376

外文期刊名：POLYMER

收录：;EI(收录号：20111913965923);WOS:【SCI-EXPANDED(收录号:WOS:000290699300002)】；

基金：L Q. Xu and L Wang contributed equally to this work. This work was supported under the SMF-NUS Research Horizon Award grant no. 270-000-303-592/646.

语种：英文

外文关键词：Reduced graphene oxide; Water-soluble perylene bisimide-containing polymers; pi-pi stacking interactions

摘要：Reduced graphene oxide (RGO)-polymer composites were prepared via pi-pi stacking interactions of RGO with the perylene bisimide-containing poly(glyceryl acrylate) (PBIPGA). PBIPGA was synthesized via atom transfer radical polymerization (ATRP) of solketal acrylate (SA), using bifunctional N,N'-bis(2-[2-[(2-bromo-2-methylpropanoyl)oxy]ethoxylethyl)perylene-3,4,9,10-tetracarboxylic acid bisimide (PBI-Br) as the initiator, and subsequent hydrolysis of the acetal-protecting group. PBIPGA was characterized by H-1 NMR spectroscopy, gel permeation chromatography (GPC). UV-visible absorption spectroscopy and fluorescence spectroscopy. The presence of pi-pi stacking interactions between PBI and the RGO surface was suggested by fluorescence and UV-visible absorption spectroscopy results. The chemical states pi-pi interaction, morphology, and composition of RGO-PBIPGA composites were characterized, respectively, by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The low cytotoxicity level of the RGO-PBIPGA composites was revealed by incubation with 3T3 fibroblasts in 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assays in vitro. (C) 2011 Elsevier Ltd. All rights reserved.