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A highly sensitive SERS sensor for quantitative analysis of glucose based on the chemical etching of silver nanoparticles.
- Source :
-
Journal of Optics . Nov2015, Vol. 17 Issue 11, p1-1. 1p. - Publication Year :
- 2015
-
Abstract
- A highly sensitive and facile ‘turn-off’ surface-enhanced Raman scattering (SERS) sensor based on the etching effect on silver nanoparticles (Ag NPs) was designed for the determination of glucose. Ag NPs marked with Raman tags of 4-mercaptopyridine (4-mpy) were assembled on the glass slide by layer-by-layer self-assembly to form a SERS chip. When this SERS chip was exposed to different concentrations of glucose and glucose oxidase-mixed solutions, the produced H2O2 started to etch the Ag NPs, leading to the SERS signal of 4-mpy decreasing. Therefore, we can trace the SERS intensity of 4-mpy to determine the glucose concentration, and the lowest detectable concentration can reach 10 μM. This glucose sensor has the promising potential of detection for clinical blood in the future. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20408978
- Volume :
- 17
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of Optics
- Publication Type :
- Academic Journal
- Accession number :
- 110516471
- Full Text :
- https://doi.org/10.1088/2040-8978/17/11/114020