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

Ryota Kabe, Xinliang Feng, Chihaya Adachi, Klaus Müllen

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)3125-3129
Number of pages5
JournalChemistry - An Asian Journal
Volume9
Issue number11
DOIs
Publication statusPublished - Aug 25 2014

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Organic Chemistry

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