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A fluorescent microsensor for the selective detection of bifenthrin

机译：用于选择性检测的荧光微传感器BIFENTHRIN

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摘要

Based on the fluorescence quenching phenomenon, a smart fluorescent microsensor was synthesized. The bifenthrin (BI) microsensor inherited the high selectivity of molecular imprinted polymers (MIPs) and the excellent fluorescence properties of aqueous CdTe quantum dots (QDs). Aqueous CdTe QDs are functionalized by octadecyl-4-vinylbenzyl-dimethyl-ammonium chloride (OVDAC). A type of functional monomer, 4-vinylphenylboronic acid (VPBA), was used and its boronic acid groups could covalently combine with a cis -diol compound for direct imprinting polymerization. The OVDAC-functionalized aqueous CdTe QDs were used as solid supports and auxiliary monomers. Under optimal conditions, experimentation showed that BI had a linear detection range of 10 to 300 μmol L ~(?1) with a correlation coefficient of 0.9968 and a high imprinting factor (IF) of 4.53. In addition, the prepared MIP-OVDAC/CdTe QDs were successfully used to detect BI in water samples. Therefore, this work provided a highly selective and sensitive fluorescence probe for the detection of BI. In addition, the fluorescence probe could be used to detect other targets by changing the functional monomers.
机译：基于荧光猝灭现象，合成了一种智能荧光微传感器。二叶素（Bi）icroSector遗传了分子印迹聚合物（MIPS）的高选择性，以及水性CdTe量子点（QDS）的优异荧光性质。通过十八烷基-4-乙烯基苄基 - 二甲基氯化铵（OVDAC）官能化CDTE QD。使用一种功能性单体，4-乙烯基苯基硼酸（VPBA），其硼酸基团可与CIS-二醇化合物共价结合，用于直接压印聚合。 OVDAC官能化水性CdTE QD用作固体载体和辅助单体。在最佳条件下，实验表明，Bi的线性检测范围为10至300μmol1〜（α1），其相关系数为0.9968和4.53的高压印因子（IF）。此外，制备的MIP-OVDAC / CDTE QD成功用于检测水样中的BI。因此，这项工作提供了一种高度选择性和敏感的荧光探针，用于检测BI。此外，荧光探针可用于通过改变功能性单体来检测其他靶标。

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