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Showing 1–10 of 10 results
Advanced filters: Author: Manuel Vilas-Varela Clear advanced filters

  • Indeno[1,2-b]fluorene (IF) is an extremely reactive polycyclic conjugated hydrocarbon with antiaromatic character, thus it has not been detected to date. Here, the authors present the successful generation and characterisation of IF both on-surface and in-solution.

    • Zsolt Majzik
    • Niko Pavliček
    • Leo Gross
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-6

  • Graphene nanoribbons are potential systems for engineering topological phases of matter, but the pre-required gapped phases are difficult to find. Here, the authors show that chiral graphene nanoribbons undergo a transition from metallic to topological insulators, and then to trivial band insulators as they are narrowed down to nanometer widths.

    • Jingcheng Li
    • Sofia Sanz
    • Jose Ignacio Pascual
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • Precise control of charge and spin states in quantum dots is often challenging. Here, the authors show systematic manipulation of the electron occupation in graphene nanoribbons laying on MgO.

    • Amelia Domínguez-Celorrio
    • Leonard Edens
    • David Serrate
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • Switching the magnetic state of a polycyclic conjugated hydrocarbon in a reversible and controlled manner is challenging. Now, by means of single-molecule scanning probe microscopy, an indenofluorene isomer on ultrathin NaCl films has been shown to adopt both open- and closed-shell states. Furthermore, bidirectional switching between the two states is achieved by changing the adsorption site of the molecule.

    • Shantanu Mishra
    • Manuel Vilas-Varela
    • Leo Gross
    ResearchOpen Access
    Nature Chemistry
    Volume: 16, P: 755-761

  • Zig-Zag graphene nanoribbons have edge states that are predicted to be spin-polarized, however, measurement of these spin-polarized states has proved elusive. Here, Brede et al overcome this challenge by growing graphene nanoribbons on ferromagnetic GdAu2, allowing for the direct observation of the spin-polarized edge states.

    • Jens Brede
    • Nestor Merino-Díez
    • David Serrate
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8

  • On-surface synthesis enables highly reactive structures to be produced under vacuum, but they need to be passivated to be incorporated into practical devices. Here, the facile protection of air-sensitive chiral graphene nanoribbons has been shown, by either hydrogenation or synthesis of an oxidized form. The chemically stable forms can subsequently be deprotected.

    • James Lawrence
    • Alejandro Berdonces-Layunta
    • Dimas G. de Oteyza
    ResearchOpen Access
    Nature Chemistry
    Volume: 14, P: 1451-1458

  • The on-surface synthesis of graphene nanoribbons typically relies on Ullmann polymerization followed by an internal cyclodehydrogenation. Here, following these two steps, the authors expand the synthetic protocol by adding controlled phenyl migration and intraribbon aryl-aryl dehydrogenative coupling to afford graphene nanoribbons with periodic arrays of [18]annulene pores at the edges.

    • César Moreno
    • Xabier Diaz de Cerio
    • Aitor Mugarza
    ResearchOpen Access
    Communications Chemistry
    Volume: 7, P: 1-7