MnO2-induced synthesis of fluorescent polydopamine nanoparticles for reduced glutathione sensing in human whole blood
| Autor: | Shuang Wu, Xiang-Juan Kong, Ru-Qin Yu, Ting-Ting Chen, Xia Chu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Indoles
Materials science Polymers education Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Redox chemistry.chemical_compound Humans General Materials Science Whole blood chemistry.chemical_classification Oxides Polymer Glutathione 021001 nanoscience & nanotechnology Fluorescence 0104 chemical sciences Quinone Manganese Compounds chemistry Biophysics Nanoparticles 0210 nano-technology Selectivity |
| Zdroj: | Nanoscale. 8:15604-15610 |
| ISSN: | 2040-3372 2040-3364 |
| DOI: | 10.1039/c6nr04777g |
| Popis: | Polydopamine (PDA) nanoparticles, as a kind of popular polymer material, have attracted a great deal of attention from various areas including materials science, biomedicine, energy, environmental science and so on owing to their striking physicochemical properties. Herein, we reported for the first time the synthesis of intrinsic fluorescent PDA nanoparticles using MnO2 as an oxidant. In the presence of MnO2, dopamine was quickly oxidized into its quinone derivative, and autopolymerized into fluorescent PDA nanoparticles. Using fluorescent PDA nanoparticles as a fluorescence signal indicator, we further established a cost-effective sensor for rapid, sensitive and selective sensing of reduced glutathione (GSH) based on the redox reaction between MnO2 and GSH, and the key role of MnO2 in the formation of fluorescent PDA nanoparticles. GSH has the capability of reducing MnO2 into Mn(2+), which inhibited the formation of the fluorescent PDA nanoparticles. Thus, the concentration of GSH was directly related to the decreased fluorescence signal intensity of the PDA nanoparticles. The sensor showed good sensing performance for GSH detection with high sensitivity and desirable selectivity over other potential interfering species. Additionally, the sensor exhibited excellent practical applications for GSH detection in human whole blood samples, which presents potential applications in biological detection and clinical diagnosis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|