Please use this identifier to cite or link to this item:
http://earsiv.odu.edu.tr:8080/xmlui/handle/11489/3163
Title: | Fabrication of a Polyaniline Ultramicroelectrode via a Self Assembled Monolayer Modified Gold Electrode |
Authors: | Bolat, Gulcin Kuralay, Filiz Eroglu, Gunes Abaci, Serdar Ordu Üniversitesi 0000-0003-0356-9692 |
Keywords: | polyaniline; self-assembled monolayer (SAM); microelectrode; gold electrode; DNA |
Issue Date: | 2013 |
Publisher: | MDPIST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND |
Abstract: | Herein, we report a simple and inexpensive way for the fabrication of an ultramicroelectrode and present its characterization by electrochemical techniques. The fabrication of polyaniline UME involves only two steps: modification of a gold (Au) electrode by self assembled monolayers (SAM) and then electrodeposition of polyaniline film on this thiol-coated Au electrode by using cyclic voltammetry and constant potential electrolysis methods. Two types of self-assembled monolayers (4-mercapto-1-butanol, MB, and 11-mercaptoundecanoic acid, MUA) were used, respectively, to see the effect of chain length on microelectrode formation. Microelectrode fabrication and utility of the surface was investigated by cyclic voltammetric measurements in a redox probe. The thus prepared polyaniline microelectrode was then used for DNA immobilization. Discrimination between double-stranded DNA (dsDNA) and single-stranded DNA (ssDNA) was obtained with enhanced electrochemical signals compared to a polyaniline-coated Au electrode. Different modifications on the electrode surfaces were examined using scanning electron microscopy (SEM). |
URI: | http://doi.org/10.3390/s130708079 http://earsiv.odu.edu.tr:8080/xmlui/handle/11489/3163 |
Appears in Collections: | Kimya |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.