Guanidinocalix[5]arene for sensitive fluorescence detection and magnetic removal of perfluorinated pollutants

Zhe Zheng, Huijuan Yu, Wen-Chao Geng, Xin-Yue Hu, Yu-Ying Wang, Zhihao Li, Yuefei Wang and Dong-Sheng Guo ()
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Zhe Zheng: Nankai University
Huijuan Yu: Tianjin University of Traditional Chinese Medicine
Wen-Chao Geng: Nankai University
Xin-Yue Hu: Nankai University
Yu-Ying Wang: Nankai University
Zhihao Li: Nankai University
Yuefei Wang: Tianjin University of Traditional Chinese Medicine
Dong-Sheng Guo: Nankai University

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract Perfluorinated alkyl substances, such as perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA), are toxic materials that are known to globally contaminate water, air, and soil resources. Strategies for the simultaneous detection and removal of these compounds are desired to address this emerging health and environmental issue. Herein, we develop a type of guanidinocalix[5]arene that can selectively and strongly bind to PFOS and PFOA, which we use to demonstrate the sensitive and quantitative detection of these compounds in contaminated water through a fluorescent indicator displacement assay. Moreover, by co-assembling iron oxide nanoparticle with the amphiphilic guanidinocalix[5]arene, we are able to use simple magnetic absorption and filtration to efficiently remove PFOS and PFOA from contaminated water. This supramolecular approach that uses both molecular recognition and self-assembly of macrocyclic amphiphiles is promising for the detection and remediation of water pollution.

Date: 2019
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DOI: 10.1038/s41467-019-13775-1

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