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Showing 1–5 of 5 results
Advanced filters: Author: Konstantin Amsharov Clear advanced filters

  • Present preparation methods fail to meet fully the demand for structurally pure single-walled carbon nanotubes; surface-catalysed cyclodehydrogenation reactions are now shown to convert precursor molecules deposited on a platinum(111) surface into ultrashort nanotube seeds that can then be grown further into defect-free and structurally pure single-walled carbon nanotubes of single chirality.

    • Juan Ramon Sanchez-Valencia
    • Thomas Dienel
    • Roman Fasel
    Research
    Nature
    Volume: 512, P: 61-64

  • Bottom-up synthesis from rationally designed precursor molecules is one of the most promising routes to single-walled carbon nanotubes of any desired chirality. Here, the authors present a combinatorial approach to easily assemble a variety of these complex nanotube precursors from simple complementary segments.

    • Joerg Tomada
    • Thomas Dienel
    • Konstantin Amsharov
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-10

  • The strained topology of [n]paracyclophenylenes ([n]CPPs) typically prevents their π sysytem from being extended, but now the formation of a planar π-extended CPP has been achieved through a bottom-up on-surface synthesis approach. The planar π-extended [12]CPP produced by this method is a nanographene featuring an all-armchair edge, which leads to delocalized electronic states around the entire ring.

    • Feifei Xiang
    • Sven Maisel
    • Sabine Maier
    Research
    Nature Chemistry
    Volume: 14, P: 871-876

  • Nanographenes with zig-zag peripheries are expected to have unique electronic properties, but their application in organic electronics has been curbed by their difficult synthesis. Here, the authors develop a facile route to zig-zag nanographenes based on a key dehydrative π-extension reaction.

    • Dominik Lungerich
    • Olena Papaianina
    • Konstantin Amsharov
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-8

  • Visualizing single-molecule reactions using electron microscopy can be difficult because of potential radiation damage from the electron beam. Now, however, it has been shown that a high-energy electron beam can be used to synthesize metallo-azafullerenes. Atomic-resolution, time-resolved transmission electron microscopy, with the help of computational calculations, is used to monitor the metal-encapsulation dynamics.

    • Helen Hoelzel
    • Sol Lee
    • Dominik Lungerich
    Research
    Nature Chemistry
    Volume: 15, P: 1444-1451