Issue 17, 2017, Issue in Progress

Surface-plasmon-induced azo coupling reaction between nitro compounds on dendritic silver monitored by surface-enhanced Raman spectroscopy

Abstract

Silver dendrites (Ag-Ds) were prepared by electrodeposition on a glassy carbon electrode (GCE) from a silver(I) sulfate solution containing cysteine. The dendritic Ag surface showed high Raman enhancement, enabling the detection of analytes from dilute solution by surface-enhanced Raman scattering (SERS). 4-Nitrothiophenol (4-NTP) was used as the probe molecule to examine the analyte-concentrating ability and SERS activity of Ag-Ds/GCE composite. The results indicate that the Ag-Ds/GCE composite exhibits a prominent SERS effect. The lowest 4-NTP detection limit obtained was 5.0 × 10−9 M. We used a 4-NTP-functionalized Ag-Ds as an analytic and catalytic platform for chemical reactions involving the conversion of 4-NTP to p-p′-dimercaptoazobenzene and azo coupling of 4-nitrobenzo-15-crown-5 to 4,4′-mercaptoazobenzene-15-crown-5-ether.

Graphical abstract: Surface-plasmon-induced azo coupling reaction between nitro compounds on dendritic silver monitored by surface-enhanced Raman spectroscopy

Supplementary files

Article information

Article type
Paper
Submitted
10 Jan 2017
Accepted
31 Jan 2017
First published
07 Feb 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 10259-10265

Surface-plasmon-induced azo coupling reaction between nitro compounds on dendritic silver monitored by surface-enhanced Raman spectroscopy

F. Cho, S. Kuo and Y. Lai, RSC Adv., 2017, 7, 10259 DOI: 10.1039/C7RA00374A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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