Making Hybrid [n]-Rotaxanes as Supramolecular Arrays of Molecular Electron Spin Qubits

Antonio Fernandez, Jesus Ferrando-Soria, Eufemio Moreno Pineda, Floriana Tuna, Inigo J Vitorica-Yrezabal, Christiane Knappke, Jakub Ujma, Christopher Muryn, Grigore Timco, Perdita Barran, Arzhang Ardavan, Richard Winpenny

    Research output: Contribution to journalArticlepeer-review


    Quantum information processing (QIP) would require that the individual units involved—qubits—communicate to other qubits while retaining their identity. In many ways this resembles the way supramolecular chemistry brings together individual molecules into interlocked structures, where the assembly has one identity but where the individual components are still recognizable. Here a fully modular supramolecular strategy has been to link hybrid organic–inorganic [2]- and [3]-rotaxanes into still larger [4]-, [5]- and [7]-rotaxanes. The ring components are heterometallic octanuclear [Cr7NiF8(O2CtBu)16]– coordination cages and the thread components template the formation of the ring about the organic axle, and are further functionalized to act as a ligand, which leads to large supramolecular arrays of these heterometallic rings. As the rings have been proposed as qubits for QIP, the strategy provides a possible route towards scalable molecular electron spin devices for QIP. Double electron–electron resonance experiments demonstrate inter-qubit interactions suitable for mediating two-qubit quantum logic gates.
    Original languageEnglish
    Article number10240
    JournalNature Communications
    Publication statusPublished - 8 Jan 2016


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