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      The Adsorption of hexacontane on hexagonal boron nitride

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      Scanning Probe Microscopy Images (115.8Mb)
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      Publication date
      2018-11
      Creators
      Diez, Juan
      Korolkov, Vladimir
      Beton, Peter
      Metadata
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      Description
      We have investigated the adsorption of hexacontane (C60 H122) on hexagonal boron nitride (hBN) using atomic force microscopy (AFM). The molecules can be deposited either by sublimation or from solution and form lamellar rows with dimensions of the order of 0.1 - 1 µm in three different rotational domains. High-resolution AFM images reveal that, similar to alkanes on graphite, the molecules are adsorbed parallel to the lattice vectors of hBN and we show using molecular mechanics that this corresponds to the lowest energy configuration. Lamellar rows with the same periodicity are observed even when several layers of hexacontane are deposited, although there is some orientational disorder in these multilayers. We also observe heat-induced modification of hexacontane including re-crystallization. We compare our results with recent X-ray studies of alkane adsorption on hBN and discuss the possible role of alkanes on steering molecular self-assembly on hBN.
      External URI
      • https://rdmc.nottingham.ac.uk/handle/internal/380
      DOI
      • http://doi.org/10.17639/nott.376
      Subjects
      • Boron nitride
      • Atomic force microscopy
      • Alkanes
      • Adsorption
      • Boron nitride, hexacontane, molecular deposition, probe microscopy, surface physics
      • Physical sciences
      Divisions
      • University of Nottingham, UK Campus::Faculty of Science::School of Physics and Astronomy
      Research institutes and centres
      • University of Nottingham, UK Campus
      Deposit date
      2018-11-15
      Data type
      Scanning probe microscopy images
      Contributors
      • Watanabe, Kenji
      • Taniguchi, Takashi
      • Baldoni, Matteo
      • Besley, Elena
      Funders
      • Other
      • Engineering and Physical Sciences Research Council
      • Leverhulme Trust
      Grant number
      • EP/N033906/1
      • EP/P019080/1
      • RPG-2016-104
      Data collection method
      Asylum Cypher Atomic Force Microscope
      Resource languages
      • en
      Copyright
      • University of Nottingham
      Publisher
      The University of Nottingham

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