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首页> 外文期刊>Crystal growth & design >Strategic Design of Anthracene-Decorated Highly Luminescent Coordination Polymers for Selective and Rapid Detection of TNP: An Explosive Nitro Derivative and Mutagenic Pollutant
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Strategic Design of Anthracene-Decorated Highly Luminescent Coordination Polymers for Selective and Rapid Detection of TNP: An Explosive Nitro Derivative and Mutagenic Pollutant

机译：用于选择性和快速检测TNP的蒽 - 装饰高发扬声器配位聚合物的战略设计：爆炸性硝基衍生物和诱变污染物

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Explosive nitroaromatic compounds (epNACs) are a class of molecules responsible for massive loss of life in the form of terror attacks and health hazards. Discerning detection of 2,4,6-trinitrophenol (TNP) like mutagenic pollutant and epNACs using robust luminescent coordination polymers (CPs) has been always a potential research field for the sake of environmental health and homeland security. In this regard, one-dimensional (1D) CPs, {[Zn(adc)(avp)(2)(H2O)]center dot(H2O)(3)}(n) (1) and {[Cd(adc)(avp)(2)(H2O)]center dot(H2O)center dot(CH3OH)}(n) (2) {H(2)adc = acetylenedicarboxylic acid and avp = 4-[2-(9-anthryl)vinyl]pyridine} have been synthesized using H(2)adc and avp ligands into aqueous solution of the nitrate salts of corresponding metal ion. Both of the polymeric compounds show extensive hydrogen bonding and pi...pi stacking interactions to form three-dimensional (3D) structures. The presence of geometrically suitable proximal anthracene moieties (extended pi-conjugation) in both the compounds provides feasible interacting sites for incoming analytes that also explains their prompt sensing property. Interestingly, both the fluorescent sensing probes exhibit highly efficient ratiometric and selective sensing ability toward TNP with fast response over other comparative epNACs. A detailed investigation on the mechanistic pathways for the quenching response has been obtained by density functional theory calculation. The results show higher sensitivity of 2 with a limit of detection (LOD) of 0.45 mu M as compared to 1 (LOD similar to 0.51 mu M). To the best of our knowledge, such hitherto unknown CPs acting as highly fluorescent sensors are not known in the literature. Here, strategically decorated anthracene moieties are congenial to geometrically accessible interacting sites for rapid and selective detection of an explosive nitro derivative as well as mutagenic pollutant TNP with higher sensitivity.
机译：爆炸性硝基芳香化合物（EPNAC）是一类分子，以恐怖袭击和健康危害的形式造成大量生命损失。从环境健康和国土安全的角度出发，利用发光配位聚合物（CPs）识别检测2,4,6-三硝基苯酚（TNP）类致突变污染物和EPNAC一直是一个潜在的研究领域。在这方面，利用H（2）adc和avp配体在相应金属离子硝酸盐的水溶液中合成了一维CPs、{[Zn（adc）（avp）（2）（H2O）]中心点（H2O）（3）}（n）（1）和{[Cd（adc）（avp）（2）（H2O）]中心点（H2O）中心点（CH3OH）}（n）（2）{H（2）adc=乙酰二羧酸和avp=4-[2-（9-蒽基）乙烯基]吡啶}。这两种聚合物都显示出广泛的氢键和pi。。。pi叠加相互作用，形成三维（3D）结构。这两种化合物中几何上合适的近端蒽部分（扩展pi共轭）的存在为进入的分析物提供了可行的相互作用位点，这也解释了它们的快速传感特性。有趣的是，这两种荧光传感探针对TNP都表现出高效的比率和选择性传感能力，与其他比较EPNAC相比响应速度更快。通过密度泛函理论计算，对猝灭响应的机理途径进行了详细的研究。结果显示，2的灵敏度更高，检测限（LOD）为0.45μM，而1（LOD类似于0.51μM）。据我们所知，文献中尚不知道此类迄今为止未知的用作高荧光传感器的CP。在这里，策略性修饰的蒽部分与几何上可访问的相互作用位点相吻合，用于快速、选择性地检测爆炸性硝基衍生物以及具有更高灵敏度的致突变污染物TNP。

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