Anion sensing using colorimetric amidourea based receptors incorporated into a 1,3-disubstituted calix[4]arene

E. Quinlan, S. E. Matthews, T. Gunnlaugsson

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Abstract

The synthesis of amidourea-based colorimetric anion sensors I and 2 and the evaluation of these sensors using anions such as acetate (CH3CO2-), fluoride (F-), hydrogen phosphate (H2PO4-) and hydrogenpyrophosphate (pyr) in DMSO is described. While I has a single amidourea moiety, 2 has two such receptors incorporated into a lower-rim 1,3-disubstituted calix[4]arene scaffold. Whilst both sensors gave rise to red shifts in their absorption spectra upon anion recognition, the sensing of F- and pyr gave rise to large changes with concomitant colour changes from yellow to purple, which were visible to the naked eye. (c) 2006 Published by Elsevier Ltd.
Original languageEnglish
Pages (from-to)9333-9338
Number of pages6
JournalTetrahedron Letters
Volume47
Issue number52
DOIs
Publication statusPublished - 2006

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