"Graphene nanoribbons (GNRs) are one-dimensional nanostructures predicted to display a wealthy selection of electronic behaviors. Based on their Interleukin-3 receptor framework, GNRs realize metallic and semiconducting electronic structures with band gaps that could be tuned across broad ranges. Selected GNRs also exhibit a peculiar gapped magnetic phase for which the half-metallic state might be induced likewise since the topologically nontrivial quantum spin Hall electronic phase. Simply because their electronic properties are hugely tunable, GNRs have speedily develop into a preferred topic of analysis towards the design of graphene-based nanostructures for technological applications. This Account presents a pedagogical overview on the many degrees of freedom from the atomic construction and interactions that researchers can use to tailor the electronic structure of these components.
The Account offers a broad picture of relevant physical concepts that might facilitate their ROCK signaling inhibitor receptor} the rational style and design of GNRs with sought after electronic properties via synthetic strategies.
We commence by discussing a generic model of zigzag GNR within the tight-binding model framework. We then describe how different modifications and extensions of your standard model impact the electronic band structures of GNRs. We classify the modifications based about the following categories: (1) electronelectron and spinorbit interactions, (two) GNR configuration, which involves width and the crystallographic orientation in the nanoribbon (chirality), and (3) the area construction of your edge.
We subdivide this final class into two groups: the effects in the termination of the pi-electron system along with the variations of electrostatic potential in the edge. This overview from the structureproperty relationships supplies a see of your several distinctive electronic properties that GNRs can know.
The 2nd a part of this Account critiques 3 latest experimental procedures for that synthesis of structurally well-defined GNRs. We describe a family members of methods that use patterning and etching of graphene and graphite to provide GNRs. Chemical unzipping of carbon nanotubes also delivers a route toward making chiral GNRs with atomically smooth edges. Scanning tunneling microscopy/spectroscopy investigations of those unzipped GNRs have revealed edge states and strongly propose that these GNRs aretheir Microtubule inhibitor molecular weight receptor} magnetic. The third method exploits the surface-assisted self-assembly of GNRs from molecular precursors. This highly effective system can give total control more than the atomic construction of narrow nanoribbons and could eventually create much more complicated graphene nanostructures."