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Title 

Noncovalent functionalization of graphene with end-functional polymers

Authors 

Choi, EY[Choi, Eun-Young]Han, TH[Han, Tae Hee]Hong, JH[Hong, Jihyun]Kim, JE[Kim, Ji Eun]Lee, SH[Lee, Sun Hwa]Kim, HW[Kim, Hyun Wook]Kim, SO[Kim, Sang Ouk] 

Issue Date 

2010

Publisher 

ROYAL SOC CHEMISTRY

Citation 

JOURNAL OF MATERIALS CHEMISTRY, v.20, no.10, pp.1907-1912

Abstract 

Stable dispersion of reduced graphene in various organic solvents was achieved via noncovalent functionalization with amine-terminated polymers. An aqueous dispersion of reduced graphene was prepared by chemical reduction of graphene oxide in aqueous media and was vacuum filtered to generate reduced graphene sheets. Good solvents and nonsolvents for the dried reduced graphene were evaluated using a solubility test. To achieve stable dispersion in the evaluated nonsolvents, amineterminated polystyrene was noncovalently functionalized to the graphene, while graphene sheets were phase transferred via sonication from aqueous phase to the organic nonsolvent phase, including the amine-terminated polymers. Thorough FTIR and Raman spectroscopy investigation verified that the protonated amine terminal group of polystyrene underwent noncovalent functionalization to the carboxylate groups at the graphene surface, providing the high dispersibility in various organic media.

ISSN 

0959-9428

URI 

http://hdl.handle.net/10203/22741

DOI 

http://dx.doi.org/10.1039/b919074k

Link 

http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000274920500010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=395d0a69a77a4892902e43d8987013d5

Appears in Collections

MS-Journal Papers(저널논문)


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