Quantitative Assessment of Surface-Enhanced Resonance Raman Scattering for the Analysis of Dyes on Colloidal Silver

1999 ◽  
Vol 71 (3) ◽  
pp. 596-601 ◽  
Author(s):  
Joanna C. Jones ◽  
Clare McLaughlin ◽  
David Littlejohn ◽  
Daran A. Sadler ◽  
Duncan Graham ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Quantitative Assessment ◽  
Resonance Raman ◽  
Colloidal Silver ◽  
Resonance Raman Scattering ◽  
Surface Enhanced

Approach to Single Molecule Detection Using Surface-Enhanced Resonance Raman Scattering (SERRS): A Study Using Rhodamine 6G on Colloidal Silver

1995 ◽  
Vol 49 (6) ◽  
pp. 780-784 ◽  
Author(s):  
Katrin Kneipp ◽  
Yang Wang ◽  
Ramachandra R. Dasari ◽  
Michael S. Feld
Keyword(s):  
Raman Scattering ◽  
Single Molecule ◽  
Rhodamine 6G ◽  
Detection System ◽  
Resonance Raman ◽  
Single Molecule Detection ◽  
Colloidal Silver ◽  
Fiber Optic Probe ◽  
Resonance Raman Scattering ◽  
Surface Enhanced

We have measured surface-enhanced resonance Raman scattering (SERRS) spectra of rhodamine 6G (R6G) at concentrations as low as 8 × 10−16 M in colloidal silver solution activated by NaCl ions. The spectra were measured with a fiber-optic probe using the 514.5-nm argon-ion laser line as excitation source and a charge-coupled-device (CCD) detection system. The correlation of SERRS photo counts and R6G concentration was found to be linear between 8 × 10−11 and 8 × 10−14 M concentrations within our experimental accuracy. Experiments conducted with small scattering volumes show that fewer than 100 R6G molecules are sufficient to give rise to a SERRS spectrum with reasonable signal-to-noise ratio. These results demonstrate that in certain cases SERRS can achieve detection limits comparable to those for fluorescence spectroscopy, and at the same time provides higher structural specificity than fluorescence. The possibilities of using SERRS for single molecule detection are discussed.

A density functional theory and resonance Raman study of a benzotriazole dye used in surface enhanced resonance Raman scattering

2006 ◽  
Vol 789 (1-3) ◽  
pp. 59-70 ◽  
Author(s):  
Prokopis C. Andrikopoulos ◽  
Karen M. McCarney ◽  
David R. Armstrong ◽  
Rachael E. Littleford ◽  
Duncan Graham ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Raman Scattering ◽  
Density Functional ◽  
Resonance Raman ◽  
Resonance Raman Scattering ◽  
Functional Theory ◽  
Surface Enhanced ◽  
Raman Study
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