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Issue 9, 2014
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Homogenous thin layer coated graphene via one pot reaction with multidentate thiolated PMMAs

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Abstract

A novel strategy for the covalent coverage of the graphene surface with brush-like PMMA–SH or multidentate P(MMA-co-SEMA) copolymers by the thiol–ene click reaction is reported. The new graphene@polymer materials were characterized by FTIR and Raman spectroscopy, thermogravimetric analysis, and AFM, TEM and SEM. AFM images and 2D Raman mapping of the D/G ratio of CVD-graphene covered with brush and multidentate polymers clearly illustrated a more homogeneous modification in the case of the latter. The multidentate-copolymer forms a thin layer covering the graphene surface, contrary to the case for typical polymer brushes. It also displays good conductivity values on the order of the initial unmodified graphene material suggesting that the covalent modification with the polymer is not detrimental to the sp2 network. A conductivity of ∼2 × 10−3 S cm−1 was achieved in a graphene-based PMMA nanocomposite using graphene@P(MMA-co-SEMA) as a filler, highlighting the importance of engineering the graphene–polymer interface through multidentate copolymer functionalization of graphene.

Graphical abstract: Homogenous thin layer coated graphene via one pot reaction with multidentate thiolated PMMAs

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Publication details

The article was received on 29 Oct 2013, accepted on 15 Dec 2013 and first published on 16 Dec 2013


Article type: Paper
DOI: 10.1039/C3TC32136C
Citation: J. Mater. Chem. C, 2014,2, 1723-1729
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    Homogenous thin layer coated graphene via one pot reaction with multidentate thiolated PMMAs

    M. Liras, O. García, I. Quijada-Garrido, G. Ellis and H. J. Salavagione, J. Mater. Chem. C, 2014, 2, 1723
    DOI: 10.1039/C3TC32136C

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