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      Supramolecular heterostructures formed by sequential epitaxial deposition of two-dimensional hydrogen-bonded arrays

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      Publication date
      2017-05-16
      Creators
      Korolkov, Vladimir
      Baldoni, Matteo
      Taniguchi, Takashi
      Watanabe, Kenji
      Besley, Elena
      Beton, Peter
      Metadata
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      Description
      Supramolecular heterostructures are formed by growing sequential layers of bi- and mono-component two-dimensional molecular arrays stabilized by hydrogen bonding. The heterostructures are formed on hexagonal boron nitride by depositing cyanuric acid/melamine (CA.M) followed by terephthalic acid (TPA) or trimesic acid (TMA) and imaged using atomic force microscopy under ambient conditions with resolution approaching 0.1 nm. A clear epitaxial arrangement is observed between these layers having intrinsically distinct symmetries and lattice constants, which for TMA/CA.M corresponds to a (root3 x root3)R30o phase, while TPA forms rows with a molecular separation that matches the CA.M period. Structures calculated using classical molecular dynamics are in excellent agreement with the orientation, registry and dimensions of the epitaxial layers. Calculations confirm that van der Waals interactions provide the dominant contribution to the adsorption energy and registry of the layers.
      External URI
      • https://rdmc.nottingham.ac.uk/handle/internal/320
      DOI
      • http://doi.org/10.17639/nott.316
      Subjects
      • Atomic force microscopy
      • Heterostructures
      • Hydrogen bonding
      • Supramolecular chemistry
      • Molecular dynamics
      • Boron nitride
      • Epitaxy
      • Van der Waals forces
      • Polymer networks
      • afm, atomic force microscopy, boron nitride, self-assembly, networks, supramolecular heterostructures, epitaxy
      • Physical sciences::Materials science
      • Physical sciences::Chemistry::Physical chemistry
      • Q Science::QD Chemistry::QD450 Physical and theoretical chemistry
      Divisions
      • University of Nottingham, UK Campus::Faculty of Science::School of Physics and Astronomy
      Deposit date
      2017-05-16
      Data type
      raw atomic force microscopy images
      Funders
      • Engineering & Physical Sciences Research Council
      • Leverhulme Trust
      • ERC Consolidator Grant
      Grant number
      • EP/N033906/1
      • RPG-2016-104
      Collection dates
      • 2014-2017
      Coverage
      • United Kingdom, Nottingham
      • 52.9414090, -1.1912337
      Data collection method
      Cypher Atomic Force Microscope, tapping mode, contact mode
      Resource languages
      • en
      Copyright
      • The University of Nottingham
      Publisher
      The University of Nottingham

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