[14p-2T-1~14] 17.1 Growth technology

▲ [14p-2T-14] Molecular Assembly Connects Graphene Nanoribbons

〇Patrick Han^1,2, Kazuto Akagi¹, Filippo Federici Canova³, Paul S. Weiss^1,2, Naoki Asao¹, Taro Hitosugi¹ (1.WPI-AIMR, 2.UCLA, 3.Alto Science Inst.)

Keywords:graphene,molecular assembly,interconnection

We present a surface-assisted molecular assembly (SAMA) that not only produces precise graphene nanoribbons (GNRs), but also connects these structures end to end. Combining scanning tunnelling microscopy and density functional theory, we found that the Cu substrate aligns precursor molecules to form and connect (3,1)-chiral-edge GNRs up to 50-nm long, with both localized zigzag-edge states and delocalized π-states. We also found evidence that π-delocalization is carried out throughout the connected GNRs, indicating electronic connection. By connecting a precise GNR (device) to other GNRs (electrodes), we demonstrate that SAMA can overcome the limitations of known graphene-processing methods; making possible the prospect for integrating graphene into current electronics.