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Superflexibility of graphene oxide

Journal Article


Abstract


  • Graphene oxide (GO), the main precursor of graphene-based materials made by solution processing, is known to be very stiff. Indeed, it has a Young’s modulus comparable to steel, on the order of 300 GPa. Despite its very high stiffness, we show here that GO is superflexible. We quantitatively measure the GO bending rigidity by characterizing the flattening of thermal undulations in response to shear forces in solution. Characterizations are performed by the combination of synchrotron X-ray diffraction at small angles and in situ rheology (rheo-SAXS) experiments using the high X-ray flux of a synchrotron source. The bending modulus is found to be 1 kT, which is about two orders of magnitude lower than the bending rigidity of neat graphene. This superflexibility compares with the fluidity of self-assembled liquid bilayers. This behavior is discussed by considering the mechanisms at play in bending and stretching deformations of atomic monolayers. The superflexibility of GO is a unique feature to develop bendable electronics after reduction, films, coatings, and fibers. This unique combination of properties of GO allows for flexibility in processing and fabrication coupled with a robustness in the fabricated structure.

Authors


  •   Poulin, Philippe (external author)
  •   Jalili, Rouhollah (external author)
  •   Neri, Wilfred (external author)
  •   Nallet, Frederic (external author)
  •   Divoux, Thibaut (external author)
  •   Colin, Annie (external author)
  •   Aboutalebi, Seyed Hamed (external author)
  •   Wallace, Gordon G.
  •   Zakri, Cecile (external author)

Publication Date


  • 2016

Citation


  • Poulin, P., Jalili, R., Neri, W., Nallet, F., Divoux, T., Colin, A., Aboutalebi, S., Wallace, G. & Zakri, C. (2016). Superflexibility of graphene oxide. Proceedings Of The National Academy Of Sciences Of The United States Of America, 113 (40), 11088-11093.

Scopus Eid


  • 2-s2.0-84989906637

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2267/

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 11088

End Page


  • 11093

Volume


  • 113

Issue


  • 40

Place Of Publication


  • United States

Abstract


  • Graphene oxide (GO), the main precursor of graphene-based materials made by solution processing, is known to be very stiff. Indeed, it has a Young’s modulus comparable to steel, on the order of 300 GPa. Despite its very high stiffness, we show here that GO is superflexible. We quantitatively measure the GO bending rigidity by characterizing the flattening of thermal undulations in response to shear forces in solution. Characterizations are performed by the combination of synchrotron X-ray diffraction at small angles and in situ rheology (rheo-SAXS) experiments using the high X-ray flux of a synchrotron source. The bending modulus is found to be 1 kT, which is about two orders of magnitude lower than the bending rigidity of neat graphene. This superflexibility compares with the fluidity of self-assembled liquid bilayers. This behavior is discussed by considering the mechanisms at play in bending and stretching deformations of atomic monolayers. The superflexibility of GO is a unique feature to develop bendable electronics after reduction, films, coatings, and fibers. This unique combination of properties of GO allows for flexibility in processing and fabrication coupled with a robustness in the fabricated structure.

Authors


  •   Poulin, Philippe (external author)
  •   Jalili, Rouhollah (external author)
  •   Neri, Wilfred (external author)
  •   Nallet, Frederic (external author)
  •   Divoux, Thibaut (external author)
  •   Colin, Annie (external author)
  •   Aboutalebi, Seyed Hamed (external author)
  •   Wallace, Gordon G.
  •   Zakri, Cecile (external author)

Publication Date


  • 2016

Citation


  • Poulin, P., Jalili, R., Neri, W., Nallet, F., Divoux, T., Colin, A., Aboutalebi, S., Wallace, G. & Zakri, C. (2016). Superflexibility of graphene oxide. Proceedings Of The National Academy Of Sciences Of The United States Of America, 113 (40), 11088-11093.

Scopus Eid


  • 2-s2.0-84989906637

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2267/

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 11088

End Page


  • 11093

Volume


  • 113

Issue


  • 40

Place Of Publication


  • United States