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New Nanoribbons Findings Reported from INSTM (Correlation between atomistic morphology and electron transport properties in defect-free and defected...

July 11, 2014



New Nanoribbons Findings Reported from INSTM (Correlation between atomistic morphology and electron transport properties in defect-free and defected graphene nanoribbons: An interpretation through Clar sextet theory)

By a News Reporter-Staff News Editor at Science Letter -- A new study on Nanoribbons is now available. According to news reporting originating in Perugia, Italy, by NewsRx journalists, research stated, "Structural, electronic and transport properties of defect-free, defected and functionalized armchair and zig-zag graphene nanoribbons (GNRs) are investigated with density functional theory and non-equilibrium Green's function calculations and rationalized in terms of Clar's theory of the aromatic sextet. Calculations suggest a tight relationship between the transport properties of nanoribbons and the underlying bond patterning as described by valence bond and Clar sextet theory."

The news reporters obtained a quote from the research from INSTM, "Namely, armchair GNRs exhibit a strong dependence of the transport properties on the ribbon width, as a consequence of different valence bond representations. The occurrence of localized defects involving electron pairs does not significantly alter this behavior. Conversely, transport properties of zigzag GNRs are less affected by morphological details, such as width and occurrence of defects, as expected from the application of Clar's theory. However, controlled edge functionalization and morphology modifications in zigzag GNRs can potentially lead to localization of aromatic sextets and, consequently, to strong changes in the transport properties. Our work indicates Clar sextet theory as a powerful and accurate tool to rationalize and predict the electronic and transport properties of complex carbon nanostructures based on GNRs."

According to the news reporters, the research concluded: "These principles can be extended to the design of novel systems with potential applications in nanoelectronics."

For more information on this research see: Correlation between atomistic morphology and electron transport properties in defect-free and defected graphene nanoribbons: An interpretation through Clar sextet theory. Carbon, 2014;75():190-200. Carbon can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Carbon - www.elsevier.com/wps/product/cws_home/258)

Our news correspondents report that additional information may be obtained by contacting D. Selli, UdR INSTM, I-06123 Perugia, Italy (see also Nanoribbons).

Keywords for this news article include: Italy, Europe, Perugia, Nanoribbons, Nanotechnology, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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