Fluorescence wavelength shifts combined with light scattering for ratiometric sensing of chloride in the serum based on CsPbBr3@SiO2 perovskite nanocrystal composite halide exchanges

A traditional fluorescence–scattering intensity based ratiometric sensing system utilizes both inherent scattering and fluorescence intensity and has drawn extensive attention owing to its simplicity and self-calibration properties. In this work, we propose a novel ratiometric fluorescence sensing s...

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Veröffentlicht in:Dalton transactions : an international journal of inorganic chemistry 2023-10, Vol.52 (42), p.15353-15359
Hauptverfasser: Zhang, Peng, Chen, Liming, Cai, Xiaoyan, Luo, Binbin, Chen, Tianju, Chen, Haini, Chen, Guoliang, Li, Feiming
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container_end_page 15359
container_issue 42
container_start_page 15353
container_title Dalton transactions : an international journal of inorganic chemistry
container_volume 52
creator Zhang, Peng
Chen, Liming
Cai, Xiaoyan
Luo, Binbin
Chen, Tianju
Chen, Haini
Chen, Guoliang
Li, Feiming
description A traditional fluorescence–scattering intensity based ratiometric sensing system utilizes both inherent scattering and fluorescence intensity and has drawn extensive attention owing to its simplicity and self-calibration properties. In this work, we propose a novel ratiometric fluorescence sensing system that combines a fluorescence wavelength shift and scattering in a single window, using second-order scattering (SOS) as the representative scattering signal based on the halide exchange of CsPbBr3@SiO2 perovskite nanocrystal composites. We observe a fast halide exchange within 10 seconds, resulting in an identifiable fluorescence wavelength blue shift, while the scattering wavelength remains relatively constant for self-correction. This system could be applied for ratiometric sensing of Cl− in the serum without any sample treatment. The established wavelength-based ratiometric system demonstrates high reliability and reproducibility, paving a new way for fluorescence sensing.
doi_str_mv 10.1039/d3dt01871g
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source Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection
subjects Fluorescence
Nanocrystals
Perovskites
Scattering
Self calibration
Silicon dioxide
title Fluorescence wavelength shifts combined with light scattering for ratiometric sensing of chloride in the serum based on CsPbBr3@SiO2 perovskite nanocrystal composite halide exchanges
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