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首页> 外文期刊>Electroanalysis >DNA-modified screen-printed electrodes with nanostructured films of multiwall carbon nanotubes, hydroxyapatite and montmorillonite
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DNA-modified screen-printed electrodes with nanostructured films of multiwall carbon nanotubes, hydroxyapatite and montmorillonite

机译：DNA修饰的丝网印刷电极，具有多壁碳纳米管，羟基磷灰石和蒙脱土的纳米结构膜

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Nanostructured films, were deposited at the surface of working electrode of the screen-printed assembly and utilized for the surface modification with double-stranded DNA. The basic electrochemical properties of the sensors were investigated using voltammetric methods. Modified electrodes were also characterized by scanning electron microscopy and electrochemical impedance measurements. It was found that the electrode modification with DNA and nanomodifier leads to in enhanced sensitivity of the DNA voltammetric detection. New potentialities of the utilization of the K-3[Fe(CN)(6)] cyclic voltammetric signal and electrochemical impedance spectroscopy were found. The DNA-based biosensors showed good repeability and necessary stability within several days.
机译：纳米结构膜沉积在丝网印刷组件的工作电极表面，并用于双链DNA的表面修饰。使用伏安法研究了传感器的基本电化学性能。修饰的电极还通过扫描电子显微镜和电化学阻抗测量来表征。已发现用DNA和纳米修饰剂修饰电极可提高DNA伏安法检测的灵敏度。发现了利用K-3 [Fe（CN）（6）]循环伏安信号和电化学阻抗谱的新潜力。基于DNA的生物传感器在几天内显示出良好的重复性和必要的稳定性。

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