Layer-by-layer films of graphene and ionic liquids for highly selective gas sensing

Qingmin Ji, Itaru Honma, Seung Min Paek, Misaho Akada, Jonathan P. Hill, Ajayan Vinu, Katsuhiko Ariga

Research output: Contribution to journalArticlepeer-review

320 Scopus citations

Abstract

The best of both worlds: Graphene/ionic liquid (G-IL) layered films were obtained by direct reduction of graphene oxide in the presence of ionic liquids, followed by reassembly through electrostatic layer-by-layer (LbL) adsorption (see picture). The layer spacing of the graphene sheets is regularly expanded upon insertion of ionic liquid molecules (green discs). Selective sensing of aromatic compounds (red spheres) by using the G-IL LbL films was also achieved.

Original languageEnglish
Pages (from-to)9737-9739
Number of pages3
JournalAngewandte Chemie - International Edition
Volume49
Issue number50
DOIs
StatePublished - 10 Dec 2010

Keywords

  • graphene
  • ionic liquids
  • layer-by-layer assembly
  • layered compounds
  • sensors

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