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Lanthanoid coordination with a tetrazole-substituted calix[4]diquinone and calix[4]dihydroquinone

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Authors
Cameron, Lee
Rajagopalan, Aswin
Abad Galan, Laura
Phe, Rene
Skelton, B.W.
Massi, Max
Ogden, Mark
Date
2019
Type
Journal Article

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Cameron, L. and Rajagopalan, A. and Abad Galan, L. and Phe, R.Z.H. and Skelton, B.W. and Massi, M. and Ogden, M.I. 2019. Lanthanoid coordination with a tetrazole-substituted calix[4]diquinone and calix[4]dihydroquinone. Supramolecular Chemistry. 31 (7): pp. 466-472.
Source Title
Supramolecular Chemistry
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Faculty
Faculty of Science and Engineering
School
School of Molecular and Life Sciences (MLS)
Remarks

This is an Accepted Manuscript of an article published by Taylor & Francis in Supramolecular Chemistry on 09/06/2019 available online at http://www.tandfonline.com/10.1080/10610278.2019.1625357

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Abstract

© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. The tetrazole-functionalised calixdiquinone 5,17-di-tert-butyl-26,28-bis-(1H-tetrazole-5-ylmethoxy)-calix[4]-25,27-diquinone Q was synthesised by chemical oxidation of the bis-tetrazole calix[4]arene precursor using PbO2/HClO4. The single crystal X-ray structure determination of Q confirmed the structure and showed binding of a water molecule in the solid state. Chemical reduction of Q to the dihydroquinone QR was achieved using N,N-diethylhydroxylamine. Comparison of the solution phase photophysical properties of Q or QR in the presence of terbium ions showed significant excitation only with QR, suggesting redox switching of the photophysical response may be possible with this or similar receptor.