Functionalization of Silver Nanoparticles with Carbohydrate Derivative for Colorimetric Assay of Thiram
| Autor: | Suresh Kumar Kailasa, Tae Jung Park, Mehul R. Kateshiya, Vishal Dhavle |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Detection limit Thiram High selectivity 02 engineering and technology Carbohydrate derivative 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Silver nanoparticle Electronic Optical and Magnetic Materials chemistry.chemical_compound Colorimetric sensor chemistry 0103 physical sciences Materials Chemistry Surface modification Electrical and Electronic Engineering Surface plasmon resonance 0210 nano-technology Nuclear chemistry |
| Zdroj: | Journal of Electronic Materials. 50:3676-3685 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-021-08875-y |
| Popis: | The surface of silver nanoparticles (Ag NPs) was functionalized with a carbohydrate derivative (glutathione-lactose, GSH-Lac) to form GSH-Lac-Ag NPs for sensing of thiram in real samples with a rapid and sensitive visual readout. This colorimetric assay of thiram relies on the change in the surface plasmon resonance (SPR) band of the GSH-Lac-Ag NPs, resulting in their aggregation by thiram, which leads to a visual change of the GSH-Lac-Ag NPs from yellow to reddish brown. As a result, the SPR band of GSH-Lac-Ag NPs red-shifts from 406 nm to 458 nm, showing good linearity in the range of 0.01 µM to 3.00 µM (R2 = 0.9841) with a limit of detection (LOD) of 3.00 nM. Addition of other pesticides did not show a remarkable red-shift of the SPR band of the GSH-Lac-Ag NPs, indicating their high selectivity as a colorimetric sensor. This method enables a facile and portable analytical platform for on-site detection of thiram in real samples with minimum volume. |
| Databáze: | OpenAIRE |
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