Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Tuning the electrical conductance of metalloporphyrin supramolecular wires

    247783_247780.pdf (762.7Kb)
    Access Status
    Open access
    Authors
    Noori, M.
    Aragonès, A.
    Di Palma, G.
    Darwish, Nadim
    Bailey, S.
    Al-Galiby, Q.
    Grace, I.
    Amabilino, D.
    González-Campo, A.
    Díez-Pérez, I.
    Lambert, C.
    Date
    2016
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Noori, M. and Aragonès, A. and Di Palma, G. and Darwish, N. and Bailey, S. and Al-Galiby, Q. and Grace, I. et al. 2016. Tuning the electrical conductance of metalloporphyrin supramolecular wires. Scientific Reports. 6: Article 37352.
    Source Title
    Scientific Reports
    DOI
    10.1038/srep37352
    School
    Nanochemistry Research Institute
    Remarks

    This open access article is distributed under the Creative Commons license http://creativecommons.org/licenses/by/4.0/

    URI
    http://hdl.handle.net/20.500.11937/22308
    Collection
    • Curtin Research Publications
    Abstract

    In contrast with conventional single-molecule junctions, in which the current flows parallel to the long axis or plane of a molecule, we investigate the transport properties of M(II)-5,15-diphenylporphyrin (M-DPP) single-molecule junctions (M=Co, Ni, Cu, or Zn divalent metal ions), in which the current flows perpendicular to the plane of the porphyrin. Novel STM-based conductance measurements combined with quantum transport calculations demonstrate that current-perpendicular-to-the-plane (CPP) junctions have three-orders-of-magnitude higher electrical conductances than their current-in-plane (CIP) counterparts, ranging from 2.10-2 G0 for Ni-DPP up to 8.10-2 G0 for Zn-DPP. The metal ion in the center of the DPP skeletons is strongly coordinated with the nitrogens of the pyridyl coated electrodes, with a binding energy that is sensitive to the choice of metal ion. We find that the binding energies of Zn-DPP and Co-DPP are significantly higher than those of Ni-DPP and Cu-DPP. Therefore when combined with its higher conductance, we identify Zn-DPP as the favoured candidate for high-conductance CPP single-molecule devices.

    Related items

    Showing items related by title, author, creator and subject.

    • Intercalating ionic liquid in graphene oxide to create efficient and stable anhydrous proton transfer highways for polymer electrolyte membrane
      Wu, W.; Wang, J.; Liu, Jian; Chen, P.; Zhang, H.; Huang, J. (2017)
      © 2017 Hydrogen Energy Publications LLC Approaches for constructing efficient and stable proton transfer highways in polymer materials are urgently desirable and required for elevated-temperature polymer electrolyte ...
    • Urolithiasis: occurrence and function of intracrystalline proteins in calcium oxalate monohydrate crystals
      Fleming, David Elliot (2004)
      The broad aim of the work presented in this thesis was to examine the relationship between the mineral and organic phases of calcium oxalate monohydrate (COM) crystals, which are the principal components of human kidney ...
    • Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents
      Aragonès, A.; Darwish, Nadim; Im, J.; Lim, B.; Choi, J.; Koo, S.; Díez-Pérez, I. (2015)
      Herein, we describe a method to fine-tune the conductivity of single-molecule wires by employing a combination of chemical composition and geometrical modifications of multiple phenyl side groups as conductance modulators ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.