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Integration of Metal-Organic Frameworks with Bi-Nanoprobes as Dual-Emissive Ratiometric Sensors for Fast and Highly Sensitive Determination of Food Hazards.
- Source :
-
Molecules (Basel, Switzerland) [Molecules] 2022 Apr 06; Vol. 27 (7). Date of Electronic Publication: 2022 Apr 06. - Publication Year :
- 2022
-
Abstract
- Functional nanoprobes which detect specific food hazards quickly and simply are still in high demand in the field of food-safety inspection research. In the present work, a dual-emission metal-organic framework-based ratiometric fluorescence probe was integrated to detect Cu <superscript>2+</superscript> and Pb <superscript>2+</superscript> with rapidness and ease. Specifically, quantum dots (QDs) and carbon quantum dots (CQDs) were successfully embedded into zeolitic imidazolate framework-67 (ZIF-67) to function as a novel ratiometric fluorescent sensing composite. The ratiometric fluorescence signal of CQDs/QDs@ZIF-67 was significantly aligned with the concentration of metal ions to give an extremely low detection limit of 0.3324 nM. The highly sensitive and selective CQDs/QDs@ZIF-67 composite showed potential for the rapid and cost-effective detection of two metal ions.
- Subjects :
- Carbon
Fluorescent Dyes
Ions
Limit of Detection
Metal-Organic Frameworks
Quantum Dots
Subjects
Details
- Language :
- English
- ISSN :
- 1420-3049
- Volume :
- 27
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Molecules (Basel, Switzerland)
- Publication Type :
- Academic Journal
- Accession number :
- 35408754
- Full Text :
- https://doi.org/10.3390/molecules27072356