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Amino Terminated Polyethylene Glycol Functionalized Graphene and Its Water Solubility

Published online by Cambridge University Press:  31 January 2011

Shifeng Hou ,
Robert D. Cuellari ,
Najeeb Hoshang H. Hakimi ,
Krutika Patel ,
Pratik Shah ,
Matthew Gorring  and
Stefanie Brachfeld
Shifeng Hou
Affiliation:
[email protected]
Robert D. Cuellari
Affiliation:
[email protected], Montclair State University, Chemistry & Biochemistry, Montclair, New Jersey, United States
Najeeb Hoshang H. Hakimi
Affiliation:
[email protected], Montclair State University, Chemistry & Biochemistry, Montclair, New Jersey, United States
Krutika Patel
Affiliation:
[email protected], Montclair State University, Chemistry & Biochemistry, Montclair, New Jersey, United States
Pratik Shah
Affiliation:
[email protected], Montclair State University, Chemistry & Biochemistry, Montclair, New Jersey, United States
Matthew Gorring
Affiliation:
[email protected], Montclair State University, Department of Earth & Environmental Studies, Montclair, New Jersey, United States
Stefanie Brachfeld
Affiliation:
[email protected], Montclair State University, Department of Earth & Environmental Studies, Montclair, New Jersey, United States
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Abstract

A chemical modification process was developed to functionalize graphene with specific groups. Graphene oxide (GO) was successfully functionalized with thionyl bromide which can be used as precursors for further functionalization. Amino terminated-polyethylene glycol (PEG-NH2) molecules were linked to single-layer graphene sheets through covalent bond. FT-IR, SEM and UV-vis spectroscopy techniques were used to characterize PEG modified graphene oxide and PEG modified reduced graphene oxide (PEG-RG). PEG-RG could disperse in water, tetrahydrofuran and ethylene glycol, with individual, single-layer graphene sheets spontaneously. The dispersion behavior of PEG-RG in an aqueous solvent has been investigated. A series of solutions of PEG-RG with concentrations of 0.001% to 1.5% were prepared and the PEG-RG dispersions exhibited long-term stability. In addition, a PEG-RG film with layered structure and high conductivity has been successfully prepared by filtration.

Keywords

nanostructureelectronic materialmicrostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1205: Symposium L – Large-Area Electronics from Carbon Nanotubes, Graphene, and Related Noncarbon Nanostructures , 2009 , 1205-L02-09
Copyright
Copyright © Materials Research Society 2010

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