Rapid, one-pot, protein-mediated green synthesis of water-soluble fluorescent nickel nanoclusters for sensitive and selective detection of tartrazine
| Autor: | Jie Hu, Yong Wang, Yongnian Ni, Yaxin Mu, Qianfen Zhuang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Circular dichroism
Absorption spectroscopy Metal Nanoparticles 02 engineering and technology 010402 general chemistry 01 natural sciences Fluorescence spectroscopy Analytical Chemistry Nanoclusters Beverages chemistry.chemical_compound Nickel Humans Fourier transform infrared spectroscopy Instrumentation Tartrazine Spectroscopy Fluorescent Dyes Detection limit 021001 nanoscience & nanotechnology Fluorescence Atomic and Molecular Physics and Optics 0104 chemical sciences Spectrometry Fluorescence Solubility chemistry 0210 nano-technology Nuclear chemistry |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 214:445-450 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2019.02.055 |
| Popis: | In the work, water-soluble bovine serum albumin-protected fluorescent nickel nanoclusters (BSA-NiNCs) are used as fluorescent probes to construct a label-free fluorescence quenching sensor for sensitive and selective detection of tartrazine. The fluorescent BSA-NiNCs are synthesized in one pot using BSA as both the template and reducing agent, and hydrogen peroxide as the additive. The as-prepared NiNCs are characterized by using various analytical techniques like transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, UV–Vis absorption spectroscopy, circular dichroism spectroscopy, and fluorescence spectroscopy. The synthesized BSA-NiNCs have a quantum yield of ca. 8% by using quinine sulfate as a standard. The sensor for tartrazine detection shows a wide linear range of 0.01–3.5 μM, with a low detection limit of 4 nM. The fluorescence quenching very likely results from the combination of the intermolecular interactions and the secondary inner filter effect between BSA-NiNCs and tartrazine. Then, the proposed sensor is successfully employed for tartrazine detection in drink samples, and the results are comparable with those based on a reference HPLC method. |
| Databáze: | OpenAIRE |
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