Luminescent Detection of Cr(VI) and Mn(VII) Based on a Stable Supramolecular Organic Framework,Crystal Growth & Design

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Luminescent Detection of Cr(VI) and Mn(VII) Based on a Stable Supramolecular Organic Framework
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2020-09-10 , DOI: 10.1021/acs.cgd.0c00941
Xiaodie Zhang ₁ , Guojian Ren ₁ , Zhuopei He ₁ , Weiting Yang ₁ , Huihui Li ₁ , Yenan Wang ₂ , Qinhe Pan ₁ , Xiaodong Shi ₃

Affiliation

A new fluorescent supramolecular organic framework (HNU-35) has been constructed, which is a three-dimensional structure composed of hydrogen bonding interactions between the carboxyl groups of adjacent 1,1,2,2-tetrakis(4-carboxyphenyl)ethylene (H₄TCPE). HNU-35 exhibits good acid–base stability and can be stable in the pH range of 1–11. Because of its good stability and luminescence emission in water, the anionic detections of HNU-35 are evaluated. All results show HNU-35 is a highly selective luminescent sensing material for the detection of Cr(VI) and Mn(VII) in aqueous solution, and the detection limits of Cr₂O₇^2–, CrO₄^2–, and MnO₄^– are 26.46 nM, 20.91 nM, and 13.56 nM. HNU-35 also shows good detection effect in the water samples of the lake and sea, which indicate HNU-35 can serve as a potential sensor for Cr(VI) and Mn(VII) detection.

中文翻译：

基于稳定的超分子有机框架的Cr（VI）和Mn（VII）发光检测

构造了一种新的荧光超分子有机骨架（HNU-35），它是由相邻1,1,2,2-四（4-羧基苯基）乙烯（H）的羧基之间的氢键相互作用构成的三维结构₄ TCPE）。HNU-35具有良好的酸碱稳定性，并且在1-11的pH范围内可以保持稳定。由于其良好的稳定性和在水中的发光发射，因此对HNU-35的阴离子检测进行了评估。所有结果表明，HNU-35是一种高选择性发光传感材料，用于检测水溶液中的Cr（VI）和Mn（VII），以及Cr ₂ O ₇^2-和CrO ₄的检测限。²^–和MnO ₄^–分别为26.46 nM，20.91 nM和13.56 nM。HNU-35在湖泊和海洋的水样中也显示出良好的检测效果，这表明HNU-35可以作为Cr（VI）和Mn（VII）检测的电位传感器。

更新日期：2020-10-07

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