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Terbium-based metal-organic frameworks through energy transfer modulation for visual logical sensing zinc and fluorine ions
Talanta ( IF 5.6 ) Pub Date : 2023-02-14 , DOI: 10.1016/j.talanta.2023.124326
Haifeng Sha 1 , Bing Yan 1
Affiliation  

Zinc is the second most abundant trace element in the human central nervous system, which is closely related to various physiological activities in the human body. Fluoride ion is one of the most harmful elements in drinking water. Excessive intake of F may cause dental fluorosis, renal failure, or DNA damage. Therefore, it is urgent to develop sensors with high sensitivity and selectivity for the detection of Zn2+ and F ions at the same time. In this work, a series of mixed lanthanide metal-organic frameworks (Ln-MOFs) probes are synthesized using a simple method of in situ doping. The luminous color can be finely modulated by changing the molar ratio of Tb3+ and Eu3+ during synthesis. Benefiting from the unique energy transfer modulation mechanism, the probe has the continuous detection capability of zinc ions and fluoride ions. The detection of Zn2+ and F in a real environment shows that the probe has a good practical application prospect. The as-designed sensor at 262 nm excitation can sequentially detect Zn2+ concentrations ranging from 10−8 to 10−3 M (LOD = 4.2 nM) and F levels ranging from 10−5 to 10−3 M (LOD = 3.6 μM) with high selectivity. Based on different output signals, a simple Boolean logic gate device is constructed to realize intelligent visualization of Zn2+ and F monitoring.



中文翻译:

基于铽的金属有机框架通过能量转移调制用于视觉逻辑传感锌和氟离子

锌是人体中枢神经系统含量第二丰富的微量元素,与人体的各种生理活动密切相关。氟离子是饮用水中危害最大的元素之一。过量摄入 F -可能导致氟斑牙、肾功能衰竭或 DNA 损伤。因此,迫切需要开发具有高灵敏度和选择性的同时检测Zn 2+和F -离子的传感器。在这项工作中,使用原位掺杂的简单方法合成了一系列混合镧系金属有机骨架 (Ln-MOF) 探针。通过改变Tb 3+和Eu 3+的摩尔比可以精细调制发光颜色合成过程中。得益于独特的能量传递调制机制,探针具有连续检测锌离子和氟离子的能力。实际环境中Zn 2+和F 的检测表明该探针具有良好的实际应用前景。设计的传感器在 262 nm 激发下可以连续检测 Zn 2+浓度范围从 10 -8到 10 -3  M(LOD = 4.2 nM)和 F -水平范围从 10 -5到 10 -3  M(LOD = 3.6 μM) 具有高选择性。基于不同的输出信号,构建简单的布尔逻辑门器件,实现Zn 2+的智能可视化和 F -监控。

更新日期:2023-02-16
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