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首页> 外文期刊>Optical Materials >Ratiometric fluorescence detection of 2,6-pyridine dicarboxylic acid with a dual-emitting lanthanide metal-organic framework (MOF)
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Ratiometric fluorescence detection of 2,6-pyridine dicarboxylic acid with a dual-emitting lanthanide metal-organic framework (MOF)

机译：2,6-吡啶二羧酸的比率荧光检测用双发射镧金属 - 有机框架（MOF）

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摘要

Bacillus anthracis is an extremely dangerous bacterium with high morbidity and mortality. It is thus of great importance to detect Bacillus anthracis or its major biomarker 2,6-pyridine dicarboxylic acid (DPA) in a rapid and sensitive way. Althought metal-organic frameworks (MOFs) have found great applications in catalysis and sensing; nevertheless, there are only a few fluorescent MOFs can be used in DAP detections, and the key factors determining the detection sensitivity is not clear yet. In this study, we successfully synthesized a novel nano-sized dual-emitting lanthanide MOF, namely Eu/Tb(BTC), for the high-sensitivity DPA detection. The synthesized Eu/Tb(BTC) showed a remarkable sensitivity, excellent selectivity, and a high accuracy. Through comprehensive characterizations of the microstructure, luminescence properties, and sensing performance of products with different Eu/Tb ratios, the unique capability as a sensitive fluorescent probe (limit of detection 1087 nM) for selectively detecting DPA was demonstrated. More importantly, a possible route to control the sensitivity of detection by controlling the original energy transfer efficiency between Eu3+ and Tb3+ was revealed. This work not only provides an excellent nano-probe for qualitative and quantitative detection of biomarker of Bacillus anthracis, but also reveals an important rule for improving the sensitivity of sensing systems.
机译：芽孢杆菌是一种极其危险的细菌，发病率高，死亡率高。因此，以快速和敏感的方式检测杆菌炭疽病或其主要生物标志物2,6-吡啶二羧酸（DPA）非常重要。和解金属有机框架（MOFS）在催化和传感中发现了很大的应用;然而，只有少数荧光MOF可以用于DAP检测，并且确定检测灵敏度的关键因素尚未清楚。在这项研究中，我们成功地合成了一种新型纳米型双发射镧系元素，即Eu / Tb（BTC），用于高灵敏度DPA检测。合成的EU / TB（BTC）显示出显着的灵敏度，优异的选择性和高精度。通过微观结构，发光性能和具有不同EU / TB比率的产品的综合表征，证明了作为选择性检测DPA的敏感荧光探针（检测1087nm）的独特能力。更重要的是，揭示了通过控制EU3 +和TB3 +之间的原始能量传递效率来控制检测灵敏度的可能路线。这项工作不仅提供了优异的纳米探针，可用于杆菌的生物标志物的定性和定量检测，而且还揭示了提高传感系统敏感性的重要规则。

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  • 来源
    《Optical Materials》 |2020年第8期|110006.1-110006.8|共8页
  • 作者

    Wu Meini; Zhuang Yixi; Liu Jianbin; Chen Wenwei; Li Xinya; Xie Rong-Jun;

  • 作者单位

    Xiamen Univ Coll Mat Fujian Key Lab Mat Genome Simingnan Rd 422 Xiamen 361005 Peoples R China;

    Xiamen Univ Coll Mat Fujian Key Lab Mat Genome Simingnan Rd 422 Xiamen 361005 Peoples R China;

    Xiamen Univ Coll Mat Fujian Key Lab Mat Genome Simingnan Rd 422 Xiamen 361005 Peoples R China;

    Xiamen Univ Coll Mat Fujian Key Lab Mat Genome Simingnan Rd 422 Xiamen 361005 Peoples R China;

    Xiamen Univ Coll Mat Fujian Key Lab Mat Genome Simingnan Rd 422 Xiamen 361005 Peoples R China;

    Xiamen Univ Coll Mat Fujian Key Lab Mat Genome Simingnan Rd 422 Xiamen 361005 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    MOFs; Ratiometric detection of DPA; Bacillus anthracis; Fluorescent nano-probe;

    机译：MOFS;比率检测DPA;芽孢杆菌蒽虫;荧光纳米探针;

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