Mechanically Stacked 1-nm-Thick Carbon Nanosheets: Ultrathin Layered Materials with Tunable Optical, Chemical, and Electrical Properties (Small 7/2011)

Nottbohm CT, Turchanin A, Beyer A, Stosch R, Gölzhäuser A (2011)
Small 7(7).

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Abstract
Carbon nanosheets are mechanically stable, free-standing two-dimensional materials with a thickness of 1 nm and well defined physical and chemical properties. They are made by radiation-induced cross-linking of aromatic self-assembled monolayers. Herein, a route is presented to the scalable fabrication of multilayer nanosheets with tunable electrical, optical, and chemical properties on insulating substrates. Stacks of up to five nanosheets with sizes of 1 cm(2) on oxidized silicon are studied. Their optical characteristics are investigated by visual inspection, optical microscopy, UV-vis reflection spectroscopy, and model calculations. Their chemical composition is studied by X-ray photoelectron spectroscopy. The multilayer samples are then annealed in an ultrahigh vacuum at various temperatures up to 1100 K. A subsequent investigation by Raman, X-ray photoelectron, and UV-vis reflection spectroscopy, as well as by electrical four-point probe measurements, demonstrates that the layered nanosheets transform into nanocrystalline graphene. This structural and chemical transformation is accompanied by changes in the optical properties and electrical conductivity and opens up a new path for the fabrication of ultrathin functional conductive coatings. Copyright 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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Nottbohm CT, Turchanin A, Beyer A, Stosch R, Gölzhäuser A. Mechanically Stacked 1-nm-Thick Carbon Nanosheets: Ultrathin Layered Materials with Tunable Optical, Chemical, and Electrical Properties (Small 7/2011). Small. 2011;7(7).
Nottbohm, C. T., Turchanin, A., Beyer, A., Stosch, R., & Gölzhäuser, A. (2011). Mechanically Stacked 1-nm-Thick Carbon Nanosheets: Ultrathin Layered Materials with Tunable Optical, Chemical, and Electrical Properties (Small 7/2011). Small, 7(7).
Nottbohm, C. T., Turchanin, A., Beyer, A., Stosch, R., and Gölzhäuser, A. (2011). Mechanically Stacked 1-nm-Thick Carbon Nanosheets: Ultrathin Layered Materials with Tunable Optical, Chemical, and Electrical Properties (Small 7/2011). Small 7.
Nottbohm, C.T., et al., 2011. Mechanically Stacked 1-nm-Thick Carbon Nanosheets: Ultrathin Layered Materials with Tunable Optical, Chemical, and Electrical Properties (Small 7/2011). Small, 7(7).
C.T. Nottbohm, et al., “Mechanically Stacked 1-nm-Thick Carbon Nanosheets: Ultrathin Layered Materials with Tunable Optical, Chemical, and Electrical Properties (Small 7/2011)”, Small, vol. 7, 2011.
Nottbohm, C.T., Turchanin, A., Beyer, A., Stosch, R., Gölzhäuser, A.: Mechanically Stacked 1-nm-Thick Carbon Nanosheets: Ultrathin Layered Materials with Tunable Optical, Chemical, and Electrical Properties (Small 7/2011). Small. 7, (2011).
Nottbohm, Christoph T., Turchanin, Andrey, Beyer, André, Stosch, Rainer, and Gölzhäuser, Armin. “Mechanically Stacked 1-nm-Thick Carbon Nanosheets: Ultrathin Layered Materials with Tunable Optical, Chemical, and Electrical Properties (Small 7/2011)”. Small 7.7 (2011).
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