Molecularly imprinted polymer coated Mn-doped ZnS quantum dots embedded in a metal-organic framework as a probe for selective room temperature phosphorescence detection of chlorpyrifos.
Molecularly imprinted polymer coated Mn-doped ZnS quantum dots embedded in a metal-organic framework as a probe for selective room temperature phosphorescence detection of chlorpyrifos.
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嵌入金属有机框架中的分子印迹聚合物涂层锰掺杂 ZnS 量子点作为毒死蜱选择性室温磷光检测的探针
作者：
毒死蜱是使用最广泛的有机磷农药之一，对人体具有毒性。然而，快速、有效、灵敏地检测CPF仍然是一个挑战。本文以Mn:ZnS量子点（QDs）作为磷光发射源，制备了一种新型的核壳结构（Mn:ZnS QDs@ZIF-8@MIP）分子印迹磷光传感器，用于CPF的高灵敏度和选择性检测，并提出了一种简单快速的室温磷光（RTP）检测方法。对于所制备的Mn:ZnS QDs@ZIF-8@MIP， Mn:ZnS量子点具有良好的磷光发射特性，利用ZIF-8作为支撑材料提高Mn:ZnS量子点的分散性，并利用ZIF-8表面的分子印迹聚合物（MIP）提高Mn:ZnS量子点对CPF的选择性。在最佳响应条件下，Mn:ZnS QDs@ZIF-8@MIP的RTP强度对CPF的响应速度较快（小于5 min）， RTP强度比P0/P与CPF浓度在0 ~ 80 μM范围内呈良好的线性关系，该方法的检出限为0.89 μM，相关系数为0.99。该方法简便、快速，可用于实际水样中CPF的检测，回收率为92% ~ 105%，相对标准偏差小于1%。该方法结合了磷光发射和分子印迹的优点，大大降低了竞争物质、背景荧光和散射光的潜在干扰，为基于分子印迹磷光传感器的水中污染物高灵敏度和选择性检测开辟了广阔的前景。毒死蜱（chlorpyrifos， CPF）是应用最广泛的有机磷农药之一，对人体有毒性，制备了Mn:ZnS QDs@ZIF-8@MIP，用于CPF的高灵敏度和选择性检测。
As one of the most widely used organophosphorus pesticides, chlorpyrifos (CPF) is toxic to humans. However, the rapid, effective and sensitive detection of CPF is still a challenge. In this paper, a novel molecularly imprinted phosphorescent sensor with a core–shell structure (Mn:ZnS QDs@ZIF-8@MIP) using Mn:ZnS quantum dots (QDs) as phosphorescent emitters was prepared for the highly sensitive and selective detection of CPF, and a simple and rapid room-temperature phosphorescence (RTP) detection method for CPF was proposed. For the prepared Mn:ZnS QDs@ZIF-8@MIP, Mn:ZnS QDs had good phosphorescence emission characteristics, ZIF-8 as support materials was used to improve the dispersibility of Mn:ZnS QDs, and molecularly imprinted polymer (MIP) on the surface of ZIF-8 was used to improve the selectivity of Mn:ZnS QDs for CPF. Under the optimal response conditions, the RTP intensity of Mn:ZnS QDs@ZIF-8@MIP showed a rapid response to CPF (less than 5 min), the RTP intensity ratio of P0/P had a good linear relationship with the concentration of CPF in the range of 0–80 μM, and the detection limit of this method was 0.89 μM with the correlation coefficient of 0.99. Moreover, this simple and rapid method has been successfully used to detect CPF in real water samples with satisfactory results, and the recoveries ranged from 92% to 105% with a relative standard deviation of less than 1%. This method combines the advantages of phosphorescence emission and molecular imprinting, and greatly reduces the potential interferences of competitive substances, background fluorescence and scattered light, which opens up a broad prospect for the highly sensitive and selective detection of pollutants in water based on molecularly imprinted phosphorescent sensors. As one of the most widely used organophosphorus pesticides, chlorpyrifos (CPF) is toxic to humans, and Mn:ZnS QDs@ZIF-8@MIP are prepared for the highly sensitive and selective detection of CPF.
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影响因子：
4.7
作者：
Burke RD;Todd SW;Lumsden E;Mullins RJ;Mamczarz J;Fawcett WP;Gullapalli RP;Randall WR;Pereira EFR;Albuquerque EX
通讯作者：
Albuquerque EX
无模板合成SERS活性金纳米爆米花用于快速检测毒死蜱残留
影响因子：
8.4
作者：
Xu, Qin;Guo, Xiaoyu;Yang, Haifeng
通讯作者：
Yang, Haifeng
影响因子：
5.7
作者：
Chen, Jian-Lian
通讯作者：
Chen, Jian-Lian
影响因子：
6.1
作者：
Lu, Qing;Chen, Xuemei;Zhang, Zhongping
通讯作者：
Zhang, Zhongping
影响因子：
6.2
作者：
Madurangika Jayasinghe, G. D. Thilini;Dominguez-Gonzalez, Raquel;Moreda-Pineiro, Antonio
通讯作者：
Moreda-Pineiro, Antonio