A dual-mode sensor for colorimetric and 'turn-on' fluorescent detection of ascorbic acid
| Autor: | Y. B. Liu, Zhenni Wei, Cuiling Ren, D. Y. Liu, Wenxiu Duan, Hongli Chen, Jiang Wu |
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| Rok vydání: | 2018 |
| Předmět: |
Detection limit
Chemistry Process Chemistry and Technology General Chemical Engineering Dual mode Analytical chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Ascorbic acid 01 natural sciences Fluorescence 0104 chemical sciences Linear relationship Linear range Turn (geometry) 0210 nano-technology Biosensor |
| Zdroj: | Dyes and Pigments. 149:491-497 |
| ISSN: | 0143-7208 |
| Popis: | In the present work, a dual mode sensor, which was obtained by integrating B, N, S co-doped carbon dots and Fe3+ (BNS-CDs@Fe3+), was developed for sensing ascorbic acid (AA). The fluorescent signal of BNS-CDs@Fe3+ sensor could be enhanced by AA, and a good linear relationship was obtained in the range of 0.1–600 μM with a detection limit down to 0.05 μM. More fascinatingly, the color of the sensor solution gradually changed from blue to red with the increasing concentrations of AA, which allowed establishing a simple colorimetric assay for AA detection in the linear range of 1–110 μM with a detection limit of 0.3 μM. Notably, a paper sensor for the determination of AA was developed with a lowest visual concentration of 1 μM, providing a novel and convenient platform for AA detection. More importantly, cell imaging experiments showed that this sensor can be applied for AA detection in HeLa cell, suggesting this sensing system holds great potential in biosensing and bioimaging. |
| Databáze: | OpenAIRE |
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