| 荧光光谱法研究水溶性L-Cys-CdS量子点与肌红蛋白的相互作用 |
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| 引用本文： | 郭伟,闫云辉.荧光光谱法研究水溶性L-Cys-CdS量子点与肌红蛋白的相互作用[J].光谱实验室,2012,29(1):475-478. |
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| 作者姓名： | 郭伟 闫云辉 |
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| 作者单位： | 新乡医学院化学教研室 453003 |
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| 摘 要： | 以L-半胱氨酸为修饰剂,采用配位化学原理合成具有良好水溶性和生物相容性的L-Cys-CdS量子点.采用紫外-可见光谱及荧光光谱,考察了肌红蛋白(Mb)溶液浓度、酸度对L-Cys-CdS量子点荧光性质的影响.结果表明Mb对量子点荧光有猝灭作用,并且Mb的浓度及酸度对荧光猝灭均有影响,并探讨了导致荧光猝灭的原因以及量子点与肌红蛋白相互作用机理.
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| 关 键 词： | CdS量子点 L-半胱氨酸 肌红蛋白 荧光光谱 |
Interaction Between Water-Soluble L-Cys-CdS Quantum Dots and Myoglobin by Fluorescence Spectrometry |
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| GUO Wei
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YAN Yun-Hui.Interaction Between Water-Soluble L-Cys-CdS Quantum Dots and Myoglobin by Fluorescence Spectrometry[J].Chinese Journal of Spectroscopy Laboratory,2012,29(1):475-478. |
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| Authors: | GUO Wei YAN Yun-Hui |
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| Institution: | (Department of Chemistry,Xinxiang Medical University,Xinxiang,Henan 453003,P.R.China) |
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| Abstract: | The water-soluble L-Cys-CdS Quantum Dots(QDs) with excellent biocompatibility were prepared with L-Cysteine as modifier according to coordination chemistry principles.The effects of the concentration and acidity of Mb solution on the photoluminescence properties of L-Cys-CdS QDs were inspected by UV-Vis absorption spectrum and fluorescence spectrometry.The results showed that myoglobin quencheed the intensity of L-Cys-CdS QDs,which was influenced by the concentration or acidity of Mb solution.Furthermore the quenching reason and the interaction mechanism between L-Cys-CdS QDs and Mb were discussed. |
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| Keywords: | CdS QDs L-Cysteine Myoglobin Fluorescence Spectrometry |
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