A solid-state switch containing an electrochemically switchable bistable poly[n]rotaxane

Wenyu Zhang, Erica Deionno, William R. Dichtel, Lei Fang, Ali Trabolsi, John Carl Olsen, Diego Benítez, James R. Heath, J. Fraser Stoddart

    Research output: Contribution to journalArticle

    Abstract

    Electrochemically switchable bistable main-chain poly[n]rotaxanes have been synthesised using a threading-followed-by-stoppering approach and were incorporated into solid-state, molecular switch tunnel junction devices. In contrast to single-station poly[n]rotaxanes of similar structure, the bistable polymers do not fold into compact conformations held together by donor-acceptor interactions between alternating stacked π-electron rich and π-electron deficient aromatic systems. Films of the poly[n]rotaxane were incorporated into the devices by spin-coating, and their thickness was easily controlled. The switching functionality was characterised both (1) in solution by cyclic voltammetry and (2) in devices containing either two metal electrodes or one metal and one silicon electrode. Devices with one silicon electrode displayed hysteretic responses with applied voltage, allowing the devices to be switched between two conductance states, whereas devices containing two metal electrodes did not exhibit switching behaviour. The electrochemically switchable bistable poly[n]rotaxanes offer significant advantages in synthetic efficiency and ease of device fabrication as compared to bistable small-molecule [2]rotaxanes.

    Original languageEnglish (US)
    Pages (from-to)1487-1495
    Number of pages9
    JournalJournal of Materials Chemistry
    Volume21
    Issue number5
    DOIs
    StatePublished - Feb 7 2011

    Fingerprint

    Rotaxanes
    Switches
    Electrodes
    Metals
    Silicon
    Tunnel junctions
    Electrons
    Spin coating
    Cyclic voltammetry
    Conformations
    Polymers
    Fabrication
    Molecules
    Electric potential

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Chemistry

    Cite this

    Zhang, W., Deionno, E., Dichtel, W. R., Fang, L., Trabolsi, A., Olsen, J. C., ... Stoddart, J. F. (2011). A solid-state switch containing an electrochemically switchable bistable poly[n]rotaxane. Journal of Materials Chemistry, 21(5), 1487-1495. https://doi.org/10.1039/c0jm02269a

    A solid-state switch containing an electrochemically switchable bistable poly[n]rotaxane. / Zhang, Wenyu; Deionno, Erica; Dichtel, William R.; Fang, Lei; Trabolsi, Ali; Olsen, John Carl; Benítez, Diego; Heath, James R.; Stoddart, J. Fraser.

    In: Journal of Materials Chemistry, Vol. 21, No. 5, 07.02.2011, p. 1487-1495.

    Research output: Contribution to journalArticle

    Zhang, W, Deionno, E, Dichtel, WR, Fang, L, Trabolsi, A, Olsen, JC, Benítez, D, Heath, JR & Stoddart, JF 2011, 'A solid-state switch containing an electrochemically switchable bistable poly[n]rotaxane', Journal of Materials Chemistry, vol. 21, no. 5, pp. 1487-1495. https://doi.org/10.1039/c0jm02269a
    Zhang, Wenyu ; Deionno, Erica ; Dichtel, William R. ; Fang, Lei ; Trabolsi, Ali ; Olsen, John Carl ; Benítez, Diego ; Heath, James R. ; Stoddart, J. Fraser. / A solid-state switch containing an electrochemically switchable bistable poly[n]rotaxane. In: Journal of Materials Chemistry. 2011 ; Vol. 21, No. 5. pp. 1487-1495.
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