Tags

Type your tag names separated by a space and hit enter

An investigation of the surface-enhanced Raman scattering (SERS) effect from a new substrate of silver-modified silver electrode.
J Colloid Interface Sci. 2005 Dec 15; 292(2):469-75.JC

Abstract

A roughened silver electrode modified with silver nanoparticles is used as a substrate, on which high-quality surface-enhanced Raman spectroscopy (SERS) of isonicotinic acid (INA) are obtained, indicating that the silver-modified silver electrode is a highly SERS-active substrate. It is difficult to separate the contributions of the electromagnetic and chemical mechanisms to the great enhancement of the Raman signal. The shift by 5-20 cm(-1) of the surface-enhanced Raman spectroscopy (SERS) bands and the change in their relative intensity compared with the ordinary Raman spectrum indicate the chemisorption of the sample molecules on the silver-modified silver surface. Furthermore, the silver nanoparticles modified on the roughened silver surface play the important role of magnifying the surface local electric field near the silver surface through resonant surface plasmon excitation. From the rich information on the silver-modified silver electrode obtained from high-quality potential-dependent SERS, we may deduce the adsorption behavior of INA and the probable SERS mechanism in the process. The probable reasons are given.

Authors+Show Affiliations

Beijing key lab for Nanophotonics and Nanostructure, Capital Normal University, Beijing 100037, China.No affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

16051260

Citation

Wen, Rui, and Yan Fang. "An Investigation of the Surface-enhanced Raman Scattering (SERS) Effect From a New Substrate of Silver-modified Silver Electrode." Journal of Colloid and Interface Science, vol. 292, no. 2, 2005, pp. 469-75.
Wen R, Fang Y. An investigation of the surface-enhanced Raman scattering (SERS) effect from a new substrate of silver-modified silver electrode. J Colloid Interface Sci. 2005;292(2):469-75.
Wen, R., & Fang, Y. (2005). An investigation of the surface-enhanced Raman scattering (SERS) effect from a new substrate of silver-modified silver electrode. Journal of Colloid and Interface Science, 292(2), 469-75.
Wen R, Fang Y. An Investigation of the Surface-enhanced Raman Scattering (SERS) Effect From a New Substrate of Silver-modified Silver Electrode. J Colloid Interface Sci. 2005 Dec 15;292(2):469-75. PubMed PMID: 16051260.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - An investigation of the surface-enhanced Raman scattering (SERS) effect from a new substrate of silver-modified silver electrode. AU - Wen,Rui, AU - Fang,Yan, Y1 - 2005/07/26/ PY - 2005/01/24/received PY - 2005/05/28/revised PY - 2005/05/31/accepted PY - 2005/7/30/pubmed PY - 2006/12/9/medline PY - 2005/7/30/entrez SP - 469 EP - 75 JF - Journal of colloid and interface science JO - J Colloid Interface Sci VL - 292 IS - 2 N2 - A roughened silver electrode modified with silver nanoparticles is used as a substrate, on which high-quality surface-enhanced Raman spectroscopy (SERS) of isonicotinic acid (INA) are obtained, indicating that the silver-modified silver electrode is a highly SERS-active substrate. It is difficult to separate the contributions of the electromagnetic and chemical mechanisms to the great enhancement of the Raman signal. The shift by 5-20 cm(-1) of the surface-enhanced Raman spectroscopy (SERS) bands and the change in their relative intensity compared with the ordinary Raman spectrum indicate the chemisorption of the sample molecules on the silver-modified silver surface. Furthermore, the silver nanoparticles modified on the roughened silver surface play the important role of magnifying the surface local electric field near the silver surface through resonant surface plasmon excitation. From the rich information on the silver-modified silver electrode obtained from high-quality potential-dependent SERS, we may deduce the adsorption behavior of INA and the probable SERS mechanism in the process. The probable reasons are given. SN - 0021-9797 UR - https://www.unboundmedicine.com/medline/citation/16051260/An_investigation_of_the_surface_enhanced_Raman_scattering__SERS__effect_from_a_new_substrate_of_silver_modified_silver_electrode_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9797(05)00653-3 DB - PRIME DP - Unbound Medicine ER -