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Engineering an upconversion fluorescence sensing platform with “off–on” pattern through specific DNAzyme-mediated signal amplification for supersensitive detection of uranyl ion

An upconversion fluorescence sensing platform was developed with upconversion nanoparticles (UCNPs) as energy donors and gold nanoparticles (AuNPs) as energy acceptors, based on the FRET principle. They were used for quantitative detection of uranyl ions (UO 2 2+ ) by amplifying the signal of the hy...

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Published in:Mikrochimica acta (1966) 2024-08, Vol.191 (8), p.503, Article 503
Main Authors: Zhang, Xinyu, Wang, Yue, Gong, Mi, Xiong, Lihao, Song, Jiayi, Chen, Sihan, Tong, Yuqi, Liu, Yu, Li, Le, Zhen, Deshuai
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container_issue 8
container_start_page 503
container_title Mikrochimica acta (1966)
container_volume 191
creator Zhang, Xinyu
Wang, Yue
Gong, Mi
Xiong, Lihao
Song, Jiayi
Chen, Sihan
Tong, Yuqi
Liu, Yu
Li, Le
Zhen, Deshuai
description An upconversion fluorescence sensing platform was developed with upconversion nanoparticles (UCNPs) as energy donors and gold nanoparticles (AuNPs) as energy acceptors, based on the FRET principle. They were used for quantitative detection of uranyl ions (UO 2 2+ ) by amplifying the signal of the hybrid chain reaction (HCR). When UO 2 2+ are introduced, the FRET between AuNPs and UCNPs can be modulated through a HCR in the presence of high concentrations of sodium chloride. This platform provides exceptional sensitivity, with a detection limit as low as 68 pM for UO 2 2+ recognition. We have successfully validated the reliability of this method by analyzing authentic water samples, achieving satisfactory recoveries (89.00%–112.50%) that are comparable to those of ICP-MS. These results indicate that the developed sensing platform has the capability to identify trace UO 2 2+ in complex environmental samples. Graphical abstract
doi_str_mv 10.1007/s00604-024-06559-y
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subjects Amplification
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Fluorescence
Gold
Microengineering
Nanochemistry
Nanoparticles
Nanotechnology
Original Paper
Sodium chloride
Upconversion
Water sampling
title Engineering an upconversion fluorescence sensing platform with “off–on” pattern through specific DNAzyme-mediated signal amplification for supersensitive detection of uranyl ion
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