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Ligand radicals as modular organic electron spin qubits

McGuire, Jake, Miras, Haralampos N., Donahue, James P., Richards, Emma ORCID: and Sproules, Stephen 2018. Ligand radicals as modular organic electron spin qubits. Chemistry - A European Journal 24 (66) , pp. 17598-17605. 10.1002/chem.201804165

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The intrinsic redox activity of the dithiolene ligand is presented here as the novel spin host in the design of a prototype molecular electron spin qubit, where the traditional roles of the metal and ligand components in coordination complexes are inverted. A series of paramagnetic bis(dithiolene) complexes with group 10 metals—nickel, palladium, platinum—provides a backdrop to investigate the spin dynamics of the organic ligand radical using pulsed EPR spectroscopy. The temperature dependence of the phase memory time (TM) is shown to be dependent on the identity of the diamagnetic metal ion, with the short times recorded for platinum a consequence of a diminishing spin‐lattice (T1) relaxation time driven by spin‐orbit coupling. The utility of the radical ligand spin center is confirmed when it delivers one of the longest phase memory times ever recorded for a molecular two‐qubit prototype.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: Wiley
ISSN: 0947-6539
Date of First Compliant Deposit: 3 December 2018
Date of Acceptance: 5 October 2018
Last Modified: 08 Nov 2023 02:45

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