Estimating the Analytical and Surface Enhancement Factors in Surface-Enhanced Raman Scattering (SERS): A Novel Physical Chemistry and Nanotechnology Laboratory Experiment

被引：54

作者：

Pavel, Ioana E. ^{[1
]}

Alnajjar, Khadijeh S. ^{[1
]}

Monahan, Jennifer L. ^{[1
]}

Stahler, Adam ^{[1
]}

Hunter, Nora E. ^{[1
]}

Weaver, Kent M. ^{[1
]}

Baker, Joshua D. ^{[1
]}

Meyerhoefer, Allie J. ^{[1
]}

Dolson, David A. ^{[1
]}

机构：

[1] Wright State Univ, Dept Chem, Dayton, OH 45434 USA

来源：

JOURNAL OF CHEMICAL EDUCATION | 2012年 / 89卷 / 02期

基金：

美国国家科学基金会;

关键词：

Graduate Education/Research; Upper-Division Undergraduate; Laboratory Instruction; Physical Chemistry; Hands-On Learning/Manipulatives; Nanotechnology; Raman Spectroscopy; Surface Science; NANOPARTICLES; SPECTROSCOPY; MOLECULES;

D O I：

10.1021/ed200156n

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel laboratory experiment was successfully implemented for undergraduate and graduate students in physical chemistry and nanotechnology. The main goal of the experiment was to rigorously determine the surface-enhanced Raman scattering (SERS)-based sensing capabilities of colloidal silver nanoparticles (AgNPs). These were quantified by estimating the analytical enhancement factor (AEF) and surface enhancement factor (SEF) of the AgNPs, that is, the most important values for characterizing the SERS effect. SERS is an embodiment of Raman spectroscopy that currently finds numerous cutting-edge applications. To achieve this, students synthesized a Creighton colloid and characterized its optical properties by UV-vis absorption spectrophotometry. The AEF and SEF values were then estimated from the measured Raman, SERS, and fluorescence emission spectra. of a test probe, rhodamine 6G, adsorbed on the colloidal AgNPs. This laboratory experiment introduced the students to the fundamentals of SERS spectroscopy and implicitly to concepts related to light scattering, surface chemistry, and resonance effects. Furthermore, students acquired new instrumental and nanotechnology-related skills that will assist them in technologically demanding careers.

引用

页码：286 / 290

页数：5

共 24 条

[1] THE INTERACTION BETWEEN ELECTROMAGNETIC RESONANCES AND ITS ROLE IN SPECTROSCOPIC STUDIES OF MOLECULES ADSORBED ON COLLOIDAL PARTICLES OR METAL SPHERES [J].