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Dual-Emission Ratiometric Fluorescent Probe Based on UiO-66-NH2@CQDs for Quantitative Detection of Acetophenone.

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Title: Dual-Emission Ratiometric Fluorescent Probe Based on UiO-66-NH2@CQDs for Quantitative Detection of Acetophenone.
Authors: Shou, Yongze1 (AUTHOR), Xu, Zhouqing1 (AUTHOR) zhqxu@hpu.edu.cn, Li, Huijun1 (AUTHOR) lihuijunxgy@hpu.edu.cn, Liu, Wenjie1 (AUTHOR), Wang, Junkun1 (AUTHOR)
Source: Journal of Fluorescence. Jan2026, Vol. 36 Issue 1, p583-593. 11p.
Subjects: Acetophenone, Fluorescent probes, Environmental monitoring, Carbon nanodots, Metal-organic frameworks, Industrial wastes
Abstract: The pressing necessity to devise a fluorescent probe capable of identifying volatile organic compounds such as acetophenone (AP). This groundbreaking advancement plays a crucial role in preserving environmental health and ensuring public health. In this work, we synthesized a ratiometric UiO-66-NH2@CQDs sensor through post-synthetic modification by anchoring carbon quantum dots onto UiO-66-NH2 metal-organic framework, which could be readily utilized as self-calibrating nanoprobe for selective detection of AP over other potential interferants. Upon the addition of AP, UiO-66-NH2@CQDs featured a decreased emission at 430 nm and an enhanced emission at 550 nm, accompanied by a characteristic fluorescence color transition from blue-green to yellow. By adopting the ration of I430nm/I550nm as the detection signal, UiO-66-NH2@CQDs could distinguish AP with excellent performance. The limit of detection for AP was estimated to be 175.6 nM, which was a significant value. Additionally, we demonstrated that on-site visual inspection of AP in industrial wastewater using a paper-based UiO-66-NH2@CQDs analysis device. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The pressing necessity to devise a fluorescent probe capable of identifying volatile organic compounds such as acetophenone (AP). This groundbreaking advancement plays a crucial role in preserving environmental health and ensuring public health. In this work, we synthesized a ratiometric UiO-66-NH2@CQDs sensor through post-synthetic modification by anchoring carbon quantum dots onto UiO-66-NH2 metal-organic framework, which could be readily utilized as self-calibrating nanoprobe for selective detection of AP over other potential interferants. Upon the addition of AP, UiO-66-NH2@CQDs featured a decreased emission at 430 nm and an enhanced emission at 550 nm, accompanied by a characteristic fluorescence color transition from blue-green to yellow. By adopting the ration of I430nm/I550nm as the detection signal, UiO-66-NH2@CQDs could distinguish AP with excellent performance. The limit of detection for AP was estimated to be 175.6 nM, which was a significant value. Additionally, we demonstrated that on-site visual inspection of AP in industrial wastewater using a paper-based UiO-66-NH2@CQDs analysis device. [ABSTRACT FROM AUTHOR]
ISSN:10530509
DOI:10.1007/s10895-025-04596-1