Selective Fluorescent Sensing for Iron in Aqueous Solution by A Novel Functionalized Pillar[5]arene

Yahan Zhang; Longming Chen; Xinbei Du; Xiang Yu; Han Zhang; Zhao Meng; Zhibing Zheng; Junyi Chen; Qingbin Meng

doi:10.1002/open.202300109

Selective Fluorescent Sensing for Iron in Aqueous Solution by A Novel Functionalized Pillar[5]arene

ChemistryOpen. 2023 Oct;12(10):e202300109. doi: 10.1002/open.202300109.

Authors

Yahan Zhang¹, Longming Chen¹, Xinbei Du¹, Xiang Yu¹, Han Zhang¹, Zhao Meng¹, Zhibing Zheng¹, Junyi Chen^{1

2}, Qingbin Meng¹

Affiliations

¹ State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, P. R. China.
² Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and, Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China.

Abstract

Iron ion is one of the most physiologically important elements in metabolic processes, indispensable for all living systems. Since its excess can lead to severe diseases, new approaches for its monitoring in water samples are urgently needed to meet requirements. Here, we firstly report a novel and universal route for the synthesis of a series of pillar[n]arene derivates containing one benzoquinone unit by photocatalysis. With this in hand, an anthracene - appended water - soluble pillar[5]arene (H) with excellent fluorescence sensing potency was prepared. H enabled the ultrasensitive detection of iron ions in aqueous solution with limits of detection of 10^-8 M. Over a wide range of metal ions, H exhibited specific selectivity toward Fe³⁺ . More importantly, H could still properly operate in a simulated sewage sample, coexisting with multiple interference ions.

Keywords: fluorescent sensor; iron sensing; pillar[n]arene; supramolecular chemistry; ultrasensitive.

Abstract

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