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Issue 34, 2017
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How exfoliated graphene oxide nanosheets organize at the water interface: evidence for a spontaneous bilayer self-assembly

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Abstract

In this study, we have characterized graphene oxide films formed at the air–water interface by X-ray reflectivity and grazing incidence X-ray diffraction using synchrotron sources. Surprisingly, the results of both measurements show that at non zero surface pressures, the film is organized as a bilayer of sheets interfaced between air and water with water molecule bridges. Such a spontaneous bilayer structure and its evolution with respect to the surface pressure has been observed for the first time. These results should allow precise control of the density of sheets deposited on the substrate when these films are transferred through the Langmuir Blodgett or Schaefer procedures. Indeed, graphene oxide keeps on attracting more and more attention, increasing the need for the production of well-controlled graphene oxide thin films due to its application in energy devices or in sensor domains.

Graphical abstract: How exfoliated graphene oxide nanosheets organize at the water interface: evidence for a spontaneous bilayer self-assembly

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Publication details

The article was received on 13 May 2017, accepted on 17 Jul 2017 and first published on 27 Jul 2017


Article type: Paper
DOI: 10.1039/C7NR03403B
Citation: Nanoscale, 2017,9, 12543-12548
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    How exfoliated graphene oxide nanosheets organize at the water interface: evidence for a spontaneous bilayer self-assembly

    N. Bonatout, F. Muller, P. Fontaine, I. Gascon, O. Konovalov and M. Goldmann, Nanoscale, 2017, 9, 12543
    DOI: 10.1039/C7NR03403B

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