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Distance measurement of a noncovalently bound Y@C82 Pair with double electron electron resonance spectroscopy

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Author(s)

Guzmán Gil-Ramírez, Anokhi Shah, Hassane El Mkami, Kyriakos Porfyrakis, Andrew D. Briggs, John J. L. Morton, Harry L. Anderson, Janet Eleanor Lovett

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Abstract

Paramagnetic endohedral fullerenes with long spin coherence times, such as N@C60 and Y@C82, are being explored as potential spin quantum bits (qubits). Their use for quantum information processing requires a ways to hold them in fixed spatial arrangements. Here we report the synthesis of a porphyrin-based two-site receptor 1, offering a rigid structure that binds spin-active fullerenes (Y@C82) at a center-to-center distance of 5.0 nm, predicted from molecular simulations. The spin-spin dipolar coupling was measured with the pulsed EPR spectroscopy technique of double electron electron resonance (DEER) and analysed to give a distance of 4.87 nm with a small distribution of distances.
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Original languageEnglish
Pages (from-to)7420-7424
JournalJournal of the American Chemical Society
Volume140
Issue number24
Early online date2 Jun 2018
DOIs
Publication statusPublished - 20 Jun 2018

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