Distance Measurement of a Noncovalently Bound Y@C-82 Pair with Double Electron Electron Resonance Spectroscopy

作者：Gil Ramirez Guzman^*; Shah Anokhi; El Mkami Hassane; Porfyrakis Kyriakos; Briggs G Andrew D; Morton John J L; Anderson Harry L; Lovett Janet E

来源：Journal of the American Chemical Society, 2018, 140(24): 7420-7424.

DOI：10.1021/jacs.8b03889

Paramagnetic endohedral fullerenes with long spin coherence times, such as N@C-60 and Y@C-82, are being explored as potential spin quantum bits (qubits). Their use for quantum information processing requires a way 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@C-82) 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 and analyzed to give a distance of 4.87 nm with a small distribution of distances.

• 出版日期2018-6-20