Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.polymer.2011.03.054
Title: Functionalization of reduced graphene oxide nanosheets via stacking interactions with the fluorescent and water-soluble perylene bisimide-containing polymers
Authors: Xu, L.Q.
Wang, L. 
Zhang, B.
Lim, C.H.
Chen, Y.
Neoh, K.-G. 
Kang, E.-T. 
Fu, G.D.
Keywords: π-π stacking interactions
Reduced graphene oxide
Water-soluble perylene bisimide-containing polymers
Issue Date: 13-May-2011
Source: Xu, L.Q., Wang, L., Zhang, B., Lim, C.H., Chen, Y., Neoh, K.-G., Kang, E.-T., Fu, G.D. (2011-05-13). Functionalization of reduced graphene oxide nanosheets via stacking interactions with the fluorescent and water-soluble perylene bisimide-containing polymers. Polymer 52 (11) : 2376-2383. ScholarBank@NUS Repository. https://doi.org/10.1016/j.polymer.2011.03.054
Abstract: Reduced graphene oxide (RGO)-polymer composites were prepared via π-π 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]ethoxy]ethyl}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 1H NMR spectroscopy, gel permeation chromatography (GPC), UV-visible absorption spectroscopy and fluorescence spectroscopy. The presence of π-π stacking interactions between PBI and the RGO surface was suggested by fluorescence and UV-visible absorption spectroscopy results. The chemical states and π-π stacking 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. © 2011 Elsevier Ltd. All rights reserved.
Source Title: Polymer
URI: http://scholarbank.nus.edu.sg/handle/10635/88980
ISSN: 00323861
DOI: 10.1016/j.polymer.2011.03.054
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