Advanced Materials

Comparison of the Conductance of Three Types of Porphyrin-Based Molecular Wires: β,meso,β-Fused Tapes, meso-Butadiyne-Linked and Twisted meso-meso Linked Oligomers

Authors

  • Gita Sedghi,

    1. Chemistry Department, University of Liverpool, Liverpool L69 7ZD, UK
    Search for more papers by this author
  • Louisa J. Esdaile,

    1. Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, UK
    Search for more papers by this author
  • Harry L. Anderson,

    Corresponding author
    1. Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, UK
    • Harry L. Anderson, Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, UK===

      Richard J. Nichols, Chemistry Department, University of Liverpool, Liverpool L69 7ZD, UK.===

    Search for more papers by this author
  • Santiago Martin,

    1. Departamento de Química Física e Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, 50009, Spain
    Search for more papers by this author
  • Donald Bethell,

    1. Chemistry Department, University of Liverpool, Liverpool L69 7ZD, UK
    Search for more papers by this author
  • Simon J. Higgins,

    1. Chemistry Department, University of Liverpool, Liverpool L69 7ZD, UK
    Search for more papers by this author
  • Richard J. Nichols

    Corresponding author
    1. Chemistry Department, University of Liverpool, Liverpool L69 7ZD, UK
    • Harry L. Anderson, Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, UK===

      Richard J. Nichols, Chemistry Department, University of Liverpool, Liverpool L69 7ZD, UK.===

    Search for more papers by this author

  • Dedicated to Klaus Müllen on the occasion of his 65th birthday

Abstract

The length dependence of charge transport is evaluated in three families of porphyrin-based wires. Planar edge-fused tapes and alkyne-linked oligomers mediate efficient charge transport with exceptionally shallow distance dependence, whereas the conductances of the twisted singly linked chains decrease steeply with increasing oligomer length. The planar tapes are more conjugated than the alkyne-linked oligomers, but these two types of wires have similar conductance attenuation factors.

original image

Ancillary