| CdTe/CdS量子点在Nafion/羟基磷灰石膜上的电化学发光及其应用于肌红蛋白的高灵敏检测 |
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| 引用本文： | 王国涛,贾丽萍,赵倩,陶绪泉,贾文丽,崔慧,王怀生.CdTe/CdS量子点在Nafion/羟基磷灰石膜上的电化学发光及其应用于肌红蛋白的高灵敏检测[J].传感技术学报,2011,24(9):1242-1247. |
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| 作者姓名： | 王国涛 贾丽萍 赵倩 陶绪泉 贾文丽 崔慧 王怀生 |
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| 作者单位： | 聊城大学化学化工学院;聊城大学材料科学与工程学院 |
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| 基金项目： | 国家自然科学基金项目(20775031,21075059) |
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| 摘 要： | 利用羟基磷灰石(HAp)和Nation将CdTe/CdS量子点(QDs)修饰到玻碳电极表面,研究了固定在复合膜内的CdTe/CdS量子点的电化学发光行为.相比水溶液中的量子点在裸电极上的电化学发光,CdTe/CdS修饰到复合膜内后的电化学发光更加稳定,且发光强度增加数十倍.在pH为6.5的磷酸盐缓冲溶液(PBS)中,以...
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| 关 键 词： | CdTe/CdS量子点 电化学发光 羟基磷灰石 三丙胺 肌红蛋白 |
Electrochemiluminescence of CdTe/CdS Quantum Dots Immobilized on Nafion/HAp Hybrid Film and Its Application to Highly Selective Detection of myoglobin |
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| WANG Guotao,JIA Liping,ZHAO Qian,TAO Xuquan,JIA Wenli,CUI Hui,WANG Huaisheng.Electrochemiluminescence of CdTe/CdS Quantum Dots Immobilized on Nafion/HAp Hybrid Film and Its Application to Highly Selective Detection of myoglobin[J].Journal of Transduction Technology,2011,24(9):1242-1247. |
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| Authors: | WANG Guotao JIA Liping ZHAO Qian TAO Xuquan JIA Wenli CUI Hui WANG Huaisheng |
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| Affiliation: | 1.College of Chemistry and Chemical Engineering;Liaocheng University,Liaocheng Shandong 252059,China; 2.College of Materials Science and Engineering,Liaocheng University,Liaocheng Shandong 252059,China |
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| Abstract: | CdTe/CdS QDs were immobilized on glassy carbon electrode(GCE)using hydroxyapatite(HAp)and Nafion.Compared with the ECL intensity of QDs dispersed in aqueous solution with the bare GCE,the chemically modified electrode could greatly enhance the ECL intensity of CdTe/CdS QDs in the presence of tri-n-propylamine(TPrA)as coreactant.A new ECL method has been developed for the determination of myoglobin(Mb)based on its quenching effect on the ECL intensity of CdTe/CdS quantum dots in pH 6.5 phosphate buffer solution(PBS).The results demonstrated that myoglobin could effectively quench the QDs emission based on the possible quenching mechanisms.Under the optimal conditions,the ECL intensity was decreased with the increase of Mb concentration in the range of 0.59 nmol/L～10.59 nmol/L with the detection limit of 0.12 nmol/L. |
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| Keywords: | CdTe/CdS quantum dots electrochemiluminescence Hydroxyapatite Tri-n-propylamine Myoglobin |
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