Title

Inner Filter Effect On Surface Enhanced Raman Spectroscopic Measurement

Abstract

Presented herein is a combined experimental and computational study of the gold nanoparticle (AuNP) inner filter effect on surface enhanced Raman spectroscopic (SERS) measurements. Using a bianalyte strategy in which dithiopurine (DTP) and ethanol were employed as the model analytes, we demonstrated that AuNPs enhance DTP's Raman signal but attenuate ethanol's Raman intensity. Combined time-resolved UV-vis and Raman measurements showed that AuNP aggregation has significant and an exactly opposite impact on the AuNP inner filter effect and SERS enhancement. This research provides critical new insights regarding SERS signal variation and offers a simple methodology for reliable determination of the SERS enhancement factors. © 2012 American Chemical Society.

Publication Date

10-16-2012

Publication Title

Analytical Chemistry

Volume

84

Issue

20

Number of Pages

8437-8441

Document Type

Review

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/ac302073f

Socpus ID

84869464652 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84869464652

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