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

Kouloumpis, A., Thomou, E., Chalmpes, N., Dimos, K., Spyrou, K., Bourlinos, A. B., Koutselas, I., Gournis, D. & Rudolf, P., May-2017, In : ACS Omega. 2, 5, p. 2090-2099 10 p.

Research output: Contribution to journalArticleAcademicpeer-review

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

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
Publication statusPublished - May-2017

    Keywords

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

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