Siddique, Abu Bakkar An, Jin Wook Kim, Hyun Jun Park, Hyeonjong Lee, Geon Chang Lee, Jae Yeol Kim, Sehoon Byeon, Minhoo Park, Chong Rae Kim, Jungahn 2024-01-20T01:32:34Z 2024-01-20T01:32:34Z 2022-01-25 2017-05 1598-5032 https://pubs.kist.re.kr/handle/201004/122762 This paper introduces poly(ethylene oxide) (PEO)-based modification of graphene oxide (GO) layers through the grafting onto the surface of GO as one of the excellent tools to improve the solubility and the processing ability of graphene. Methylene blue (MB)-mediated intercalation of graphite (flake) was first performed at 25 A degrees C in aqueous media, followed by the Hummers' process for oxidation, leading to an efficient production of GO. Direct oxidation of graphite (powder) also yielded the corresponding GO. The reaction of neutralized GO with "living" PEOs synthesized from alkyllithium- or sodium azide-initiated polymerization of ethylene oxide (EO) in polar solvents led to the production of the corresponding graphene oxide-g-PEOs soluble in different solvents such as tetrahydrofuran (THF), methanol, dimethyl sulfoxide (DMSO), and H2O, etc. The resulting products were characterized by the combination of size exclusion chromatographic, H-1 nuclear magnetic resonance (H-1 NMR), Raman, thermogravimetric anlysis (TGA), transmission electron microscopy (TEM), and atomic force microscopy (AFM) analyses. English 한국고분자학회 Chemical modification of graphene oxide through poly(ethylene oxide)-conjugations Article 10.1007/s13233-017-5069-x 1 Macromolecular Research, v.25, no.5, pp.452 - 460 Macromolecular Research 25 5 452 460 N scie scopus kci ART002225020 000402753600010 2-s2.0-85021438805 Polymer Science Polymer Science Article RAMAN-SPECTROSCOPY GRAPHITE OXIDE PHOTOTHERMAL THERAPY METHYLENE-BLUE FUNCTIONALIZED GRAPHENE SHEETS CANCER NANOPARTICLES ELECTROLYTE EXFOLIATION living anionic ring-opening polymerization methylene blue-mediated intercalation soluble graphene oxides graphene oxide-g-PEO graphene oxide-g-PEO-N-3