介电谱
电化学
微分脉冲伏安法
电极
循环伏安法
扫描电子显微镜
材料科学
石墨
核化学
分析化学(期刊)
化学工程
化学
色谱法
复合材料
物理化学
工程类
作者
Mihrican Muti,Arzum Erdem,A. Ersin Karagözler,Mert Soysal
标识
DOI:10.1016/j.colsurfb.2011.12.021
摘要
In this study, single-use graphite electrodes modified with 5-amino-2-mercapto-1,3,4-thidiazole (AMT) were fabricated for electrochemical monitoring of DNA. The surfaces of AMT modified pencil graphite electrodes (PGEs) were characterized by scanning electron microscopy (SEM). Electrochemical behaviors of these electrodes were investigated using differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). The effects of pretreatment of PGE and immobilization time and concentration of AMT were studied to facilitate an effective immobilization on PGE surface. The efficiency of immobilization is verified by measuring the oxidation signals of either AMT itself or adenine base of DNA, immobilized onto AMT modified electrodes.
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