Exfoliation of graphite into graphene in polar solvents mediated by amphiphilic hexa-peri-hexabenzocoronene

Ryota Kabe; Xinliang Feng; Chihaya Adachi; Klaus Müllen

doi:10.1002/asia.201402535

Exfoliation of graphite into graphene in polar solvents mediated by amphiphilic hexa-peri-hexabenzocoronene

Ryota Kabe, Xinliang Feng, Chihaya Adachi, Klaus Müllen

Applied Chemistry

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

11 Citations (Scopus)

Abstract

A water-soluble surfactant consisting of hexa-perihexabenzocoronene (HBC) as hydrophobic aromatic core and hydrophilic carboxy substituents was synthesized. It exhibited a self-assembled nanofiber structure in the solid state. Profiting from the π interactions between the large aromatic core of HBC and graphene, the surfactant mediated the exfoliation of graphite into graphene in polar solvents, which was further stabilized by the bulky hydrophilic carboxylic groups. A graphene dispersion with a concentration as high as 1.1 mgL^-1 containing 2-6 multilayer nanosheets was obtained. The lateral size of the graphene sheets was in the range of 100-500 nm based on atomic force microscope (AFM) and transmission electron microscope (TEM) measurements.

Original language	English
Pages (from-to)	3125-3129
Number of pages	5
Journal	Chemistry - An Asian Journal
Volume	9
Issue number	11
DOIs	https://doi.org/10.1002/asia.201402535
Publication status	Published - Aug 25 2014

All Science Journal Classification (ASJC) codes

Biochemistry
Organic Chemistry

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title = "Exfoliation of graphite into graphene in polar solvents mediated by amphiphilic hexa-peri-hexabenzocoronene",

abstract = "A water-soluble surfactant consisting of hexa-perihexabenzocoronene (HBC) as hydrophobic aromatic core and hydrophilic carboxy substituents was synthesized. It exhibited a self-assembled nanofiber structure in the solid state. Profiting from the π interactions between the large aromatic core of HBC and graphene, the surfactant mediated the exfoliation of graphite into graphene in polar solvents, which was further stabilized by the bulky hydrophilic carboxylic groups. A graphene dispersion with a concentration as high as 1.1 mgL-1 containing 2-6 multilayer nanosheets was obtained. The lateral size of the graphene sheets was in the range of 100-500 nm based on atomic force microscope (AFM) and transmission electron microscope (TEM) measurements.",

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AU - Adachi, Chihaya

AU - Müllen, Klaus

PY - 2014/8/25

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AB - A water-soluble surfactant consisting of hexa-perihexabenzocoronene (HBC) as hydrophobic aromatic core and hydrophilic carboxy substituents was synthesized. It exhibited a self-assembled nanofiber structure in the solid state. Profiting from the π interactions between the large aromatic core of HBC and graphene, the surfactant mediated the exfoliation of graphite into graphene in polar solvents, which was further stabilized by the bulky hydrophilic carboxylic groups. A graphene dispersion with a concentration as high as 1.1 mgL-1 containing 2-6 multilayer nanosheets was obtained. The lateral size of the graphene sheets was in the range of 100-500 nm based on atomic force microscope (AFM) and transmission electron microscope (TEM) measurements.

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