Graphene-porphyrin single-molecule transistors

Jan A. Mol; Chit Siong Lau; Wilfred J. M. Lewis; Hatef Sadeghi; Cecile Roche; Arjen Cnossen; Jamie H. Warner; Colin J. Lambert; Harry L. Anderson; G. Andrew D. Briggs

doi:10.1039/C5NR03294F

Graphene-porphyrin single-molecule transistors†

Jan A. Mol,‡*^a Chit Siong Lau,‡^a Wilfred J. M. Lewis,^b Hatef Sadeghi,^c Cecile Roche,^b Arjen Cnossen,^b Jamie H. Warner,^a Colin J. Lambert,

^c Harry L. Anderson^b and G. Andrew D. Briggs^a

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^a Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, UK
E-mail: jan.mol@materials.ox.ac.uk

^b Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, UK

^c Quantum Technology Centre, Physics Department, Lancaster University, LA1 4YB Lancaster, UK

Abstract

We demonstrate a robust graphene-molecule-graphene transistor architecture. We observe remarkably reproducible single electron charging, which we attribute to insensitivity of the molecular junction to the atomic configuration of the graphene electrodes. The stability of the graphene electrodes allow for high-bias transport spectroscopy and the observation of multiple redox states at room-temperature.

Nanoscale

Graphene-porphyrin single-molecule transistors†

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