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 Lā1.
![Graphical abstract: Rim-differentiated pillar[5]arene-modified surfaces for rapid PFOA/PFOS detection](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=D4CC02676D&imageInfo.ImageIdentifier.Year=2024)
T. Gao, Z. Yang, J. M. S. Goed, H. Zuilhof and F. M. Miloserdov, Chem. Commun., 2024, 60, 9789 DOI: 10.1039/D4CC02676D
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