Please use this identifier to cite or link to this item: https://doi.org/10.1002/marc.201200635
Title: Reactive graphene oxide nanosheets: A versatile platform for the fabrication of graphene oxide-biomolecule/polymer nanohybrids
Authors: Xu, L.Q.
Zhang, B.
Chen, Yu.
Neoh, K.-G. 
Kang, E.-T. 
Fu, G.D.
Keywords: biocompatibility
electrical switching
graphene oxide
nanocomposites
reactive pentafluorophenyl ester
Issue Date: 12-Feb-2013
Citation: Xu, L.Q., Zhang, B., Chen, Yu., Neoh, K.-G., Kang, E.-T., Fu, G.D. (2013-02-12). Reactive graphene oxide nanosheets: A versatile platform for the fabrication of graphene oxide-biomolecule/polymer nanohybrids. Macromolecular Rapid Communications 34 (3) : 234-238. ScholarBank@NUS Repository. https://doi.org/10.1002/marc.201200635
Abstract: Graphene oxide (GO) nanosheets can be functionalized with reactive pentafluorophenyl ester via esterification of the carboxylic groups. The resulting reactive GO nanosheets provide a versatile platform for grafting of amino-containing polymers or biomolecules via ester-amine coupling. Coupling of poly[(9,9-dioctylfluorene)-alt-(4-amino-phenylcarbazole)] (PFCz-NH2), amino-terminated hyperbranched polyglycerol (HPG-NH2), and lysozyme (Lyz) was illustrated. The Al/GO-g-PFCz/ITO sandwich thin-film device exhibits bistable electrical switching and rewritable memory effects. The GO-g-Lyz nanohybrids exhibit high bactericidal efficacy against S. aureus and E. coli, while the GO-g-HPG nanohybrids exhibit reduced cytotoxicity toward 3T3 fibroblasts. Graphene oxide nanosheets can be functionalized with reactive pentafluorophenyl ester to produce a versatile reactive platform for further functionalization via grafting of amino-containing polymers or biomolecules in an ester-amine coupling reaction. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Source Title: Macromolecular Rapid Communications
URI: http://scholarbank.nus.edu.sg/handle/10635/89981
ISSN: 10221336
DOI: 10.1002/marc.201200635
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