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Silver nanoparticle functionalized glass fibers for combined surface-enhanced Raman scattering spectroscopy (SERS)/surface-assisted laser desorption/ionization (SALDI) mass spectrometry via plasmonic/thermal hot spots.
- Source :
-
Analyst . 10/21/2016, Vol. 141 Issue 20, p5835-5841. 7p. - Publication Year :
- 2016
-
Abstract
- We presented the fabrication of a silver nanoparticle (Ag NP) functionalized glass fiber (Ag-GF) substrate for combined surface-enhanced Raman scattering spectroscopy (SERS)/surface-assisted laser desorption/ionization (SALDI) mass spectrometry. Ag NPs were immobilized onto the surface of glass fibers through a simple sputter deposition process. The SERS and SALDI activities strongly depended on the nanostructures of the deposited Ag NPs on the GFs. The closely-packed Ag NPs with a size of 20–50 nm and an inter-particle nanoscale gap of less than 10 nm were effective for the simultaneously enhanced SERS/SALDI substrate via plasmonic/thermal “hot spots”, while the interconnected continuous Ag film reduced both the SERS/SALDI activities. The SERS enhanced factor (EFSERS) and SALDI enhanced factor (EFSALDI) were newly proposed. Finally, the concentration-dependent signal intensities of SERS and SALD-MS of sulfur compounds using an identical Ag NP-GF substrate were examined, and the linear dependence relationship in the log–log plot was demonstrated for the combined quantitative SERS/SALDI-MS analysis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00032654
- Volume :
- 141
- Issue :
- 20
- Database :
- Academic Search Index
- Journal :
- Analyst
- Publication Type :
- Academic Journal
- Accession number :
- 118567739
- Full Text :
- https://doi.org/10.1039/c6an00511j