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Silver nanowire layer-by-layer films as substrates for surface-enhanced Raman scattering.
Anal Chem. 2005 Jan 15; 77(2):378-82.AC

Abstract

In this paper, the fabrication of highly stable, surface-enhanced Raman scattering (SERS) active dendrimer/silver nanowire layer-by-layer (LBL) films is reported. Ag nanowires, approximately 100 nm in diameter, were produced in solution and transferred, using the LBL technique, onto a single fifth-generation DAB-Am dendrimer layer on a glass substrate. The Ag nanowires, and the resulting LBL films were characterized using UV-visible surface plasmon absorbance, while the LBL films were further characterized by atomic force microscopy measurements and surface-enhanced Raman and resonance Raman scattering of several analytes. The dendrimer was found to effectively immobilize the Ag nanowires with increased control over spacing and aggregation of the particles. These films are shown to be excellent substrates for SERS/SERRS measurements, demonstrating significant enhancement, and trace detection capability. Several trial analytes were tested using a variety of excitation energies, and results confirmed effective enhancement of Raman signals throughout the visible range (442-785 nm) with different molecules. Analytes were deposited onto the enhancing Ag nanowire LBL films surface using both casting and Langmuir-Blodgett monolayer transferring techniques.

Authors+Show Affiliations

Aroca RF
Materials & Surface Science Group, Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, Canada N9B 3P4. rarocal@cogeco.ca
Goulet PJ
No affiliation info available
dos Santos DS
No affiliation info available
Alvarez-Puebla RA
No affiliation info available
Oliveira ON
No affiliation info available

MeSH

DendrimersNanowiresSilverSpectrophotometry, UltravioletSpectrum Analysis, RamanSurface Plasmon ResonanceSurface Properties

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15649031

Citation

Aroca, Ricardo F., et al. "Silver Nanowire Layer-by-layer Films as Substrates for Surface-enhanced Raman Scattering." Analytical Chemistry, vol. 77, no. 2, 2005, pp. 378-82.
Aroca RF, Goulet PJ, dos Santos DS, et al. Silver nanowire layer-by-layer films as substrates for surface-enhanced Raman scattering. Anal Chem. 2005;77(2):378-82.
Aroca, R. F., Goulet, P. J., dos Santos, D. S., Alvarez-Puebla, R. A., & Oliveira, O. N. (2005). Silver nanowire layer-by-layer films as substrates for surface-enhanced Raman scattering. Analytical Chemistry, 77(2), 378-82.
Aroca RF, et al. Silver Nanowire Layer-by-layer Films as Substrates for Surface-enhanced Raman Scattering. Anal Chem. 2005 Jan 15;77(2):378-82. PubMed PMID: 15649031.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Silver nanowire layer-by-layer films as substrates for surface-enhanced Raman scattering. AU - Aroca,Ricardo F, AU - Goulet,Paul J G, AU - dos Santos,David S,Jr AU - Alvarez-Puebla,Ramón A, AU - Oliveira,Osvaldo N,Jr PY - 2005/1/15/pubmed PY - 2007/1/31/medline PY - 2005/1/15/entrez SP - 378 EP - 82 JF - Analytical chemistry JO - Anal Chem VL - 77 IS - 2 N2 - In this paper, the fabrication of highly stable, surface-enhanced Raman scattering (SERS) active dendrimer/silver nanowire layer-by-layer (LBL) films is reported. Ag nanowires, approximately 100 nm in diameter, were produced in solution and transferred, using the LBL technique, onto a single fifth-generation DAB-Am dendrimer layer on a glass substrate. The Ag nanowires, and the resulting LBL films were characterized using UV-visible surface plasmon absorbance, while the LBL films were further characterized by atomic force microscopy measurements and surface-enhanced Raman and resonance Raman scattering of several analytes. The dendrimer was found to effectively immobilize the Ag nanowires with increased control over spacing and aggregation of the particles. These films are shown to be excellent substrates for SERS/SERRS measurements, demonstrating significant enhancement, and trace detection capability. Several trial analytes were tested using a variety of excitation energies, and results confirmed effective enhancement of Raman signals throughout the visible range (442-785 nm) with different molecules. Analytes were deposited onto the enhancing Ag nanowire LBL films surface using both casting and Langmuir-Blodgett monolayer transferring techniques. SN - 0003-2700 UR - https://www.unboundmedicine.com/medline/citation/15649031/Silver_nanowire_layer_by_layer_films_as_substrates_for_surface_enhanced_Raman_scattering_ DB - PRIME DP - Unbound Medicine ER -