A novel strategy of constructing 2D supramolecular organic framework sensor for the identification of toxic metal ions

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science Pub Date : 2023-09-01 DOI:10.1016/j.nanoms.2023.01.002

Ying Wang , Ning Han , Chao-Qun Ma , Hui Liu , Shengsheng Yu , Rongzhou Wang , Vijay Kumar Thakur , Ling-Bao Xing

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引用次数: 1

Abstract

Two novel two-dimensional (2D) supramolecular organic frameworks were fabricated in water based on the encapsulation-enhanced donor-acceptor interaction between the methyl viologen (MV) units, methoxy naphthyl (MN) units, and CB [8]. The tetraphenylethylene (TPE) derivatives 1 with four MV units were employed as rigid building blocks and the two MN units modified oligoethylene glycol derivatives 2 and 3 served as flexible edges, respectively. The obtained two SOFs have obvious sheet-like structures and exhibit fluorescence emission at 350–500 nm. In addition, these two SOFs were employed for the luminescent detection of Cr(VI) and Mn(VII) in aqueous solutions, and the detection limits of CrO₄²⁻, Cr₂O₇²⁻, and MnO₄⁻ were calculated in a very low concentration range, indicating that these two SOFs can serve as a potential sensor for Cr(VI) and Mn(VII) detection in water. This work constructs two SOFs in an aqueous solution through a facile method and further enriches the applications of SOFs.

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构建用于有毒金属离子识别的二维超分子有机框架传感器的新策略

基于甲基紫精（MV）单元、甲氧基萘基（MN）单元和CB之间的包封增强供体-受体相互作用，在水中制备了两种新型的二维（2D）超分子有机框架[8]。具有四个MV单元的四苯乙烯（TPE）衍生物1被用作刚性构建块，并且两个MN单元改性的低聚乙二醇衍生物2和3分别用作柔性边缘。所获得的两种SOF具有明显的片状结构，在350–500时表现出荧光发射nm。此外，将这两种SOF用于水溶液中Cr（VI）和Mn（VII）的发光检测，并在非常低的浓度范围内计算了CrO42-、Cr2O72-和MnO4−的检测极限，表明这两种固体氧化物可以作为检测水中Cr（VI。这项工作通过一种简单的方法在水溶液中构建了两个SOF，进一步丰富了SOF的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Materials Science Engineering-Mechanics of Materials

CiteScore

20.90

自引率

3.00%

发文量

294

审稿时长

9 weeks

期刊介绍： Nano Materials Science (NMS) is an international and interdisciplinary, open access, scholarly journal. NMS publishes peer-reviewed original articles and reviews on nanoscale material science and nanometer devices, with topics encompassing preparation and processing; high-throughput characterization; material performance evaluation and application of material characteristics such as the microstructure and properties of one-dimensional, two-dimensional, and three-dimensional nanostructured and nanofunctional materials; design, preparation, and processing techniques; and performance evaluation technology and nanometer device applications.