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On-Surface Single-Molecule Identification of Mass-Selected Cyclodextrin-Supported Polyoxovanadates for Multistate Resistive-Switching Memory Applications

  • Fangshun Yang
    Fangshun Yang
    Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
  • Marco Moors
    Marco Moors
    Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
    More by Marco Moors
  • Duc Anh Hoang
    Duc Anh Hoang
    Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
    Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, University Leipzig, Linnéstraße 2, 04103 Leipzig, Germany
  • Sebastian Schmitz
    Sebastian Schmitz
    Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
  • Markus Rohdenburg
    Markus Rohdenburg
    Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, University Leipzig, Linnéstraße 2, 04103 Leipzig, Germany
  • Harald Knorke
    Harald Knorke
    Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, University Leipzig, Linnéstraße 2, 04103 Leipzig, Germany
  • Ales Charvat
    Ales Charvat
    Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
    Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, University Leipzig, Linnéstraße 2, 04103 Leipzig, Germany
    More by Ales Charvat
  • Xue-Bin Wang
    Xue-Bin Wang
    Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 999352, United States
    More by Xue-Bin Wang
  • Kirill Yu. Monakhov*
    Kirill Yu. Monakhov
    Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
    *(K.Yu.M.) Email: [email protected]
  • , and 
  • Jonas Warneke*
    Jonas Warneke
    Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, University Leipzig, Linnéstraße 2, 04103 Leipzig, Germany
    Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
    *(J.W.) Email: [email protected]
Cite this: ACS Appl. Nano Mater. 2022, 5, 10, 14216–14220
Publication Date (Web):September 22, 2022
https://doi.org/10.1021/acsanm.2c03025
Copyright © 2022 American Chemical Society

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    Abstract

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    Polyoxovanadate anions immobilized on conducting substrates are promising candidates for molecule-based memory technologies. However, strong electronic interactions with the substrate and the formation of larger agglomerates remain bottlenecks on the way to their technical application. We demonstrate that ion soft-landing of mass selected cyclodextrin-functionalized hexavanadates enables deposition of these host–guest complexes as single memory units on surfaces without their quaternary ammonium countercations from solution. Cyclodextrin provides a stabilizing “shell” for the dianions. Multistate switching evidenced by the change in molecular resistance has been detected using scanning tunneling microscopy and spectroscopy and attributed to reduction of individual vanadium (+V) centers.

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    Cited By

    This article is cited by 2 publications.

    1. Marco Moors, Kirill Yu. Monakhov. Capacitor or Memristor: Janus Behavior of Polyoxometalates. ACS Applied Electronic Materials 2024, Article ASAP.
    2. Kirill Yu. Monakhov. Implication of counter-cations for polyoxometalate-based nano-electronics. Comments on Inorganic Chemistry 2022, , 1-10. https://doi.org/10.1080/02603594.2022.2157409