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Electronic and Optical Vibrational Spectroscopy of Molecular Transport Junctions Created by On-Wire Lithography

Authors

  • Abrin L. Schmucker,

    1. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
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  • Gokhan Barin,

    1. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
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  • Keith A. Brown,

    1. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
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  • Matthew Rycenga,

    1. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
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  • Ali Coskun,

    1. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
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  • Onur Buyukcakir,

    1. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
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  • Kyle D. Osberg,

    1. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
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  • J. Fraser Stoddart,

    Corresponding author
    1. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
    • Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
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  • Chad A. Mirkin

    Corresponding author
    1. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
    • Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
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Abstract

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Raman spectroscsopy is used for studying molecular transport junctions (MTJs), but it cannot distinguish molecules participating in electrical transport from nearby inactive molecules. Here, on-wire lithography-generated nanostructures are used to study MTJs through inelastic electron tunneling spectroscopy complemented by Raman spectroscopy to fingerprint the molecules participating in electrical conduction, while observation of host-guest interactions confirms their functionality.

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