Abstract
We study the electronic properties of a series of coronene-derived
graphitic nanoribbons recently synthesized in a pre-programmed, nanotube
assisted, chemical route Talyzin et al. Nano Lett., 2011, 11, 4352
and Fujihara et al. J. Phys. Chem. C, 2012, 116, 15141. We employ a
combination of density functional theory and spin-polarized
tight-binding methods to show how details of the molecular building
blocks and their assembly uniquely determine the electronic structure of
the resulting ribbon. We demonstrate the onset of multiple magnetic
states for these systems and a non-trivial dependence of the electronic
bandgap with both atomic structure and spin configuration, which make
these coronene-based ribbons potential candidates for applications in
nanoelectronics.
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