Tuning the Redox Properties of Fullerene Clusters within a Metal-Organic Capsule.
Journal of the American Chemical Society
American Chemical Society
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Rizzuto, F., Wood, D. M., Ronson, T., & Nitschke, J. (2017). Tuning the Redox Properties of Fullerene Clusters within a Metal-Organic Capsule.. Journal of the American Chemical Society, 139 (32), 11008-11011. https://doi.org/10.1021/jacs.7b05788
A porphyrin-edged metal-organic tetrahedron was shown to form host-guest complexes containing 1-4 equivalents of fullerene C60, depending on the solvent employed. The molecules of C60 were bound in anti-cooperative fashion within well-defined pockets; an X-ray crystal structure of three fullerenes inside the tet- rahedron was obtained. Electrochemical measurements revealed that the electron-accepting properties of the fullerenes inside the capsules were altered depending on the mode of encapsulation. En- capsulation of a greater number of fullerenes was observed to in- crease the electron affinity of the overall cluster. A non-covalent method of tuning the electronics of fullerenes is thus presented.
This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC EP/M01083X/1). F.J.R. acknowledges Cambridge Australia Scholarships for Ph.D. funding. We thank Diamond Light Source (UK) for synchrotron beam time on I19 (MT8464 and MT11397).
External DOI: https://doi.org/10.1021/jacs.7b05788
This record's URL: https://www.repository.cam.ac.uk/handle/1810/267055