A new rim-differentiated pillar[5]arene (RD-P5) has been synthesized and immobilized onto an Al2O3 surface for the rapid detection of perfluoroalkyl acids. This P5-Al2O3 surface provides a novel approach for measuring perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) using contact angle measurements, with limits of detection down to 10 ng/L.
T. Gao, Z. Yang, J. M. S. Goed, H. Zuilhof and F. Miloserdov, Chem. Commun., 2024, Accepted Manuscript , DOI: 10.1039/D4CC02676D
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