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The Study of Multiwalled Carbon Nanotube Deposed with Conducting Polymer for Sensor
|作者:||蔡毓楨||關鍵字:||應用研究;Conducting polymers;材料科技;導電高分子;奈米碳管;生物感測器;Carbon nanotubes;Biosensors||摘要:||
The aim of this study is to investigate the preparation of multiwalled carbon nanotube deposed with conducting polymer for sensors. Advantages of the electrochemical formation of conducting polymers films are (i) an easy preparation procedure, (ii) accurate control of the polymer thickness via the electrical charge passed during the film formation process, (iii) localization of the electrochemical reaction exclusively on the electrode surface allowing precise modification of electrodes and surfaces of complex geometry, and (iv) the possibility to build up multi-layer structures. These have made the conducting polymers to be utilized in the development of sensors.Since the discovery of carbon nanotubes, there has been attracted the attention of many scientists worldwide. Carbon nanotubes can be divided into two categories. One is the multiwall carbon nanotubes and the other is the single-wall carbon nanotubes. The small dimensions, remarkable physical properties and the enhancement of electron reactions made them a very unique material with a whole range of promising applications. They can be applied on biological cell electrode, catalysts, nanoscale electronic and mechanical systems, scanned probe microscope and electron field emission tips.The potential applications of carbon nanotubes in chemical sensors would greatly benefit from the ability of carbon nanotubes to promote the electron-transfer reactions of molecules. The difficulty for developing a carbon nanotubes-based sensor is the insolubility of carbon nanotubes in all solvents. The challenge of solubilizing carbon nanotubes can be resolved by covalent modification or noncovalent functionalization. In particular, the entrapment of carbon nanotubes in polymer matrix has shown useful for improving their solubility.The sensors made by this study would be able to detect heavy metals in the presence of surfactants and biomolecules, for instance, glucose.
|Appears in Collections:||化學工程學系所|
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