Graphene/Carbon Dot Hybrid Thin Films Prepared by a Modified Langmuir-Schaefer Method

Antonios Kouloumpis, Eleni Thomou, Nikolaos Chalmpes, Konstantinos Dimos, Konstantinos Spyrou, Athanasios B. Bourlinos, Ioannis Koutselas, Dimitrios Gournis, Petra Rudolf*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

20 Citations (Scopus)
155 Downloads (Pure)

Abstract

The special electronic, optical, thermal, and mechanical properties of graphene resulting from its 2D nature, as well as the ease of functionalizing it through a simple acid treatment, make graphene an ideal building block for the development of new hybrid nanostructures with well-defined dimensions and behavior. Such hybrids have great potential as active materials in applications such as gas storage, gas/liquid separation, photocatalysis, bioimaging, optoelectronics, and nanosensing. In this study, luminescent carbon dots (C-dots) were sandwiched between oxidized graphene sheets to form novel hybrid multilayer films. Our thin-film preparation approach combines self-assembly with the Langmuir-Schaefer deposition and uses graphene oxide nanosheets as template for grafting C-dots in a bidimensional array. Repeating the cycle results in a facile and low-cost layer-by-layer procedure for the formation of highly ordered hybrid multilayers, which were characterized by photoluminescence, UV-visible, X-ray photoelectron, and Raman spectroscopies, as well as X-ray diffraction and atomic force microscopy.

Original languageEnglish
Pages (from-to)2090-2099
Number of pages10
JournalACS Omega
Volume2
Issue number5
DOIs
Publication statusPublished - May-2017

Keywords

  • LUMINESCENT CARBON NANODOTS
  • GRAPHITE OXIDE
  • PRUSSIAN BLUE
  • QUANTUM DOTS
  • NANOTUBES
  • NANOCRYSTALS
  • PERFORMANCE
  • ABSORPTION
  • CHEMISTRY

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