用于传感 2,6-二异构膦酸和六价铬氧化阴离子的联苯四甲酸酯基发光金属-增益框架

IF 3.9 3区 化学 Q2 POLYMER SCIENCE
Yu-Shuo Li, Xin-Yuan Wang, Fang-Hua Zhao, Zhong-Lin Li
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引用次数: 0

摘要

近年来,作为发光传感器的金属有机框架(MOFs)的合理设计引起了人们的极大兴趣。2,6-二二氯啉酸(DPA)是炭疽杆菌的特异性生物标记物,六价铬氧阴离子是环境水体中的有毒离子,对DPA和六价铬氧阴离子的检测具有重要意义。本文合成并表征了一种新的三维 Cd(II) MOF,{[Cd2(bpda)(1,4-bbix)0.5(H2O)4]-H2O}n (1) (H4bpda = 2,3,3′,4′-联苯四羧酸,1,4-bbix = 1,4-双(苯并咪唑-1-基-甲基)苯)。其晶体结构为三维框架,呈现出三极(3,3,5)连接拓扑结构,点符号为 (42-6)(62-8)(42-62-84-102)。1 在水中具有优异的发光性能和稳定性,研究人员将其作为发光传感器,通过发光淬灭效应检测水溶液中的 DPA、CrO42- 和 Cr2O72-。1 对 DPA、CrO42- 和 Cr2O72- 的检测限分别为 0.90、0.53 和 0.41 μM。此外,1 还可以作为发光传感器检测血清中的 DPA 和河水中的六(Cr)氧化阴离子。通过理论计算、PXRD、紫外-可见光谱和发光寿命研究了淬灭机制。制备的 1 发光膜可用于 DPA、CrO42- 和 Cr2O72-的目视检测。这项研究提出了一种有效的 Cd(II) MOF 作为感测水溶液中 DPA、CrO42- 和 Cr2O72-的功能平台。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Biphenyltetracarboxylate-Based Luminescent Metal-Orgainc Framework for Sensing of 2,6-Dipicolinic Acid and Cr(VI) Oxo-Anions

Biphenyltetracarboxylate-Based Luminescent Metal-Orgainc Framework for Sensing of 2,6-Dipicolinic Acid and Cr(VI) Oxo-Anions

Rational design of metal-organic frameworks (MOFs) as luminescent sensors, has attracted great interest in recent years. 2,6-dipicolinic acid (DPA) is the specific biomarker of Bacillus anthracis, Cr(VI) oxo-anions are toxic ions in environmental water, and the detection of DPA and Cr(VI) oxo-anions is of great significance. Herein, a new three-dimensional (3D) Cd(II) MOF, {[Cd2(bpda)(1,4-bbix)0.5(H2O)4]·H2O}n (1) (H4bpda = 2,3,3′,4′-biphenyltetracarboxylic acid, 1,4-bbix = 1,4-bis(benzimidazol-1-yl-methyl)benzene) has been synthesized and characterized. Its crystal structure is a 3D framework, which presents a trinodal (3,3,5)-connected topology with the point symbol of (42·6)(62·8)(42·62·84·102). 1 shows excellent luminescence and stability in water, which was explored as luminescent sensor for detection of DPA, CrO42- and Cr2O72- in aqueous solutions via luminescence quenching effect. The detection limits of 1 toward DPA, CrO42- and Cr2O72- are 0.90, 0.53 and 0.41 μM, respectively. Furthermore, 1 also can serve as luminescent sensor to detect DPA in serum and Cr(VI) oxo-anions in river water. The quenching mechanisms were studied by theoretical calculations, PXRD, UV-vis spectra and luminescent lifetimes. The luminescent film of 1 was prepared for the visual detection of DPA, CrO42- and Cr2O72-. This work presents an effective Cd(II) MOF as the functional platform for sensing of DPA, CrO42- and Cr2O72- in aqueous solution.

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来源期刊
CiteScore
8.30
自引率
7.50%
发文量
335
审稿时长
1.8 months
期刊介绍: Journal of Inorganic and Organometallic Polymers and Materials [JIOP or JIOPM] is a comprehensive resource for reports on the latest theoretical and experimental research. This bimonthly journal encompasses a broad range of synthetic and natural substances which contain main group, transition, and inner transition elements. The publication includes fully peer-reviewed original papers and shorter communications, as well as topical review papers that address the synthesis, characterization, evaluation, and phenomena of inorganic and organometallic polymers, materials, and supramolecular systems.
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