Graphene-wrapped hybrid spheres of electrical conductivity

Sang Ah Ju; Kyunghee Kim; Jung Hyun Kim; Sang Soo Lee

doi:10.1021/am200056t

Graphene-wrapped hybrid spheres of electrical conductivity

Sang Ah Ju, Kyunghee Kim, Jung Hyun Kim, Sang Soo Lee

Research output: Contribution to journal › Article › peer-review

74 Citations (Scopus)

Abstract

We present a simple approach for the fabrication of monodisperse electroconductive hybrid spheres using graphene sheet-wrapping via ionic interaction-based self-assembly. The graphene sheets partially charged with anion, which were prepared by controlled chemical reduction of graphite oxide, were mixed with monodisperse polymer nanospheres containing cationic surface charge to form ionic self-assembled hybrid spheres of core-shell structure. The resulting graphene-wrapped hybrid spheres were found to have graphene layer thickness of ca. 10 nm and to exhibit electrical conductivity of 1.33-4.21 S/m as well as monodisperse distributions in shape and diameter.

Original language	English
Pages (from-to)	2904-2911
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	3
Issue number	8
DOIs	https://doi.org/10.1021/am200056t
Publication status	Published - 2011 Aug 24

Keywords

charged grapheme
electroconductivity
hybrid spheres
ionic interaction

ASJC Scopus subject areas

General Materials Science

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10.1021/am200056t

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Y1 - 2011/8/24

N2 - We present a simple approach for the fabrication of monodisperse electroconductive hybrid spheres using graphene sheet-wrapping via ionic interaction-based self-assembly. The graphene sheets partially charged with anion, which were prepared by controlled chemical reduction of graphite oxide, were mixed with monodisperse polymer nanospheres containing cationic surface charge to form ionic self-assembled hybrid spheres of core-shell structure. The resulting graphene-wrapped hybrid spheres were found to have graphene layer thickness of ca. 10 nm and to exhibit electrical conductivity of 1.33-4.21 S/m as well as monodisperse distributions in shape and diameter.

AB - We present a simple approach for the fabrication of monodisperse electroconductive hybrid spheres using graphene sheet-wrapping via ionic interaction-based self-assembly. The graphene sheets partially charged with anion, which were prepared by controlled chemical reduction of graphite oxide, were mixed with monodisperse polymer nanospheres containing cationic surface charge to form ionic self-assembled hybrid spheres of core-shell structure. The resulting graphene-wrapped hybrid spheres were found to have graphene layer thickness of ca. 10 nm and to exhibit electrical conductivity of 1.33-4.21 S/m as well as monodisperse distributions in shape and diameter.

KW - charged grapheme

KW - electroconductivity

KW - hybrid spheres

KW - ionic interaction

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Graphene-wrapped hybrid spheres of electrical conductivity

Abstract

Keywords

ASJC Scopus subject areas

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