| 多孔硅表面组装胆固醇分子印迹膜的光电化学 |
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| 引用本文： | 韦情情,李怀祥,武怀娣,崔洪泰.多孔硅表面组装胆固醇分子印迹膜的光电化学[J].纳米科技,2011(6):5-8,30. |
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| 作者姓名： | 韦情情 李怀祥 武怀娣 崔洪泰 |
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| 作者单位： | [1]山东师范大学化学化工与材料科学学院,山东济南250014 [2]山东师范大学物理与电子科学学院,山东济南250014 |
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| 基金项目： | 国家自然科学基金项目（No：60671010;20775045） |
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| 摘 要： | 光电化学刻蚀出多孔硅（PS）用含有SnCl2、SbCl3和Ce（NO3）3的乙醇溶液浸泡后，经过400℃10min热处理，表面形成Ce—Sb共掺的SnO2光透导电薄层（TOCL）。在TOCL的表面组装含有胆固醇分子的十二烷基硫醇薄膜，萃取其中的胆固醇分子后形成筛孔分子印迹电极（SHE）。该电极与不同浓度的胆固醇乙醇溶液作用后，光电化学方法袁征了分子印迹电极对胆固醇浓度响应特性。实验结果表明分子印迹电极与吸附胆固醇的浓度具有较好的关联。特别指出的是，该筛孔分子印迹电极有望在不需要掺比电极以及零偏电压条件下实现对胆固醇的检测。
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| 关 键 词： | 多孔硅 修饰电极 胆固醇 组装膜 分子印迹 |
Photoelectrochemical Investigation of Assembled Cholesterol Molecular Imprinted Film on the Surface of Porous Silicon |
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| Authors: | WEI Qing-qing LI Huai-xiang WU Huai-di CUI Hong-tai |
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| Affiliation: | 1. College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China) (2. College of Physics and Electronics Science, Shandong Normal University, Jinan 250014, China) |
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| Abstract: | Porous silicon（PS）was formed by electrochemical anodization and immersed in ethanol solution containing SnCl2, SbCl3 and Ce（NO3）3. A Cerium （Ce） and antimony （Sb） codoped tin dioxide （SnO2）, transparent optical conductive layer （TOCl） was formed on the porous silicon after heat treatment at 673K for lOmin. A film of dodecyl thiol containing cholesterol was assembled on the surface of TOCL and used as screen hole electrode（SHE） after extracting cholesterol molecules. Electrochemical and photoelectrochemical behaviors of the SHE re-adsorbed various concentration of cholesterol have been investigated by measurements of cyclic voltammogram and photocurrent of two electrode system in 5mM K3Fe（CN）6 solution. A new photoelectrochemical sensor based on two-electrode system at zero bias for determination of cholesterol has been attempted. |
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| Keywords: | porous silicon modified electrode cholesterol assemble film molecular imprinting |
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