期刊论文

Li, Le;Zhen, DS

英文

Microchimica Acta

0026-3672

2025

192

3

1-14

10.1007/s00604-025-07023-1

This work was supported by the grant from National Natural Science Foundation of China (82204176, 12175103, 12305389); the Natural Science Foundation of Hunan Province (2023JJ50127, 2024JJ5345); the Major Science and Technology Public Relations Project in Hunan Province (2023ZK1060), and the research fund of Nuclear Materials of China Atomic Energy Authority (WDZC-2023-AW-0322).

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Anovel fluorescence/colorimetric dual-mode detection strategy for uranium ions (UO(2)(2+)) is presentedbased on a cerium-sulfonyl calix[4]arene (SC4A) platform. The exo- and endo-rim sites of SC4A can coordinate with Ce(3+) and Ce(4+) ions, respectively, quenching Ce(3+) fluorescence and influencing the oxidase-like activity of Ce(4+). In the absence of UO(2)(2+), the solution of 3,3,5,5-tetramethylbenzidine (TMB) remains blue, but upon UO(2)(2+) binding, Ce(3+) dissociates from SC4A, restoring fluorescence, while UO(2)(2+) interacts with oxTMB, turning the solution from blue to colorless. Thi...