Microwave-assisted synthesis of water-soluble Eu3+ hybrid carbon dots with enhanced fluorescence for the sensing of Hg2+ ions and imaging of fungal cells
| Autor: | Mittal L. Desai, Hirakendu Basu, P. K. Sharma, Rakesh Kumar Singhal, Suresh Kumar Kailasa, Sanjay Jha |
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| Rok vydání: | 2018 |
| Předmět: |
Detection limit
Chemistry chemistry.chemical_element Ethylenediaminetetraacetic acid 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Fluorescence Catalysis 0104 chemical sciences Ion chemistry.chemical_compound Nanosensor Reagent Materials Chemistry 0210 nano-technology Europium Carbon |
| Zdroj: | New Journal of Chemistry. 42:6125-6133 |
| ISSN: | 1369-9261 1144-0546 |
| DOI: | 10.1039/c7nj04835a |
| Popis: | In this work, a fluorescent nanosensor based on Eu3+ hybrid carbon dots (Eu3+-CDs) was fabricated by single-step microwave heating using ethylenediaminetetraacetic acid (EDTA), L-cysteine and europium(III) nitrate as reagents. The as-synthesized Eu3+ hybrid CDs exhibited a characteristic fluorescence emission peak at 427 nm upon excitation at a wavelength of 343 nm. Upon the addition of Hg2+ ions, the emission peak of the Eu3+ hybrid CDs was quenched and a linear relationship was observed between the fluorescence quenching intensity and the concentration of Hg2+ ions in the range of 5.0–250 μM with a detection limit of 2.2 μM. The developed nanosensor not only enables selective and sensitive detection of Hg2+ ions but also offers excellent applications in the confocal imaging of fungal cells (Fomitopsis sp.), which holds great promise in biomedical applications. |
| Databáze: | OpenAIRE |
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