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首页> 外文会议>IEEE Sensors Conference >Fluorescence Sensor Probe for the Detection of Acetaminophen Using L-Cysteine CdSe/ZnS Quantum Dots and Molecular Imprinted Polymer@Quantum Dots
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Fluorescence Sensor Probe for the Detection of Acetaminophen Using L-Cysteine CdSe/ZnS Quantum Dots and Molecular Imprinted Polymer@Quantum Dots

机译：使用L-半胱氨酸Cdse / ZnS量子点检测乙酰氨基酚的荧光传感器探针和分子印迹聚合物@量子点

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Acetaminophen (AC) is a commonly used analgesic and antipyretic drug. It has been detected in water systems and is of environmental concern owing to its potential impacts. In this study a simple and economical one-pot organometallic approach was applied to synthesize water soluble CdSe/ZnS quantum dots (QDs). A molecular imprinted polymer (MIP) layer was then anchored on the surface of the L-cysteine-CdSe/ZnS QDs via the Stober method. The structures of QDs, MIP@QDs and NIP@QDs were characterized by fluorescence spectroscopy, FTIR and TEM. The fluorescence of L-Cys-CdSe/ZnS QDs and MIP@QDs were enhanced and quenched respectively by the introduction of AC allowing for the development of a simple and rapid method for AC detection. Under optimal conditions, ΔF (F-F_0) of L-Cys-CdSe/ZnS QDs was linearly proportional to AC concentration from 3.0-100.0 nmol L~(-1) with a detection limit of 4.22 nmol L~(-1) while the fluorescence intensity of MIP@QDs showed quenching in the presence of AC over the linear range of 10.0-900.0 nmol L~(-1) with a detection limit of 6.0 nmol L~(-1). The prototype sensor material can potentially be applied for the detection of AC in real samples.
机译：乙酰氨基酚（AC）是一种常用的镇痛药和解热药物。它在水系统中被检测到，由于其潜在的影响，环境令人担忧。在本研究中，应用了一种简单而经济的单壶有机金属方法，用于合成水溶性Cdse / ZnS量子点（QDS）。然后，通过达尔法将分子印迹聚合物（MIP）层锚定在L-半胱氨酸 - CdSe / ZnS QDS的表面上。荧光光谱，FTIR和TEM的表征QDS，MIP @ QD和NIP @ QD的结构。通过引入AC来提高L-Cys-Cdse / ZnS和MIP @QDS和MIP @QDS的荧光并淬火，允许开发简单快速的AC检测方法。在最佳条件下，L-Cys-CDSE / ZnS QDS的ΔF（F-F_0）与3.0-100.0 nmol L〜（-1）的Ac浓度线性成比例，检测限为4.22 nmol L〜（-1） MIP×QD的荧光强度在AC的情况下显示出10.0-900.0 Nmol L〜（-1）的线性范围，检测限为6.0 nmol L〜（-1）。原型传感器材料可能适用于检测真实样品中的AC。

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