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首页> 外文期刊>Journal of porous materials >Urea metal-organic frameworks as a highly selective fluorescent sensor for the explosive nitroaromatics and carbonyl compounds
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Urea metal-organic frameworks as a highly selective fluorescent sensor for the explosive nitroaromatics and carbonyl compounds

机译：尿素金属有机框架作为爆炸性硝基芳烃和羰基化合物的高度选择性荧光传感器

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摘要

Currently, urea containing frameworks assumed to have a prominent role in the developing field of Y shapes anion detection such as TNP, TNT and their derivatives owing to their capability to act as double H-bond donors. Developing new and highly efficient sensors for detection of trace concentration of these explosives is remaining challenge. The immobilization of organic-functional struts within the pore wall of metal-organic frameworks (MOFs) is one of the new strategies to develop highly sensitive and selective receptors. Decoration of MOF skeleton with urea moiety can be helpful in effective recognizing of these specific guests for two reasons, (i) incorporation of urea strut in the framework prevents their inherent self-assembly and (ii) urea can form positive double hydrogen bond donation site which can act as a promising receptor for anionic moieties. A 3D, urea functionalized, TMU-18, has successfully synthesized as a chemosensor for selective detection by fluorescence signaling towards explosive nitroaromatics and carbonyl compounds. TMU-18 due to its special and porous structure and available functional group shows strong luminescence emission, and could be effectively used for sensitive detection of Trinitrophenol (TNP) with a 10 mu M limit of detection (LOD).
机译：目前，由于它们具有双重氢键供体的能力，因此被认为在Y形阴离子检测领域（如TNP，TNT及其衍生物）的发展中起着重要作用的含尿素骨架。开发新型高效传感器以检测这些炸药的痕量浓度仍然是挑战。将有机功能撑杆固定在金属有机骨架（MOF）的孔壁中是开发高度敏感和选择性受体的新策略之一。用尿素部分修饰MOF骨架可有助于有效识别这些特定的客体，这有两个原因，（i）尿素支柱掺入骨架中可防止其固有的自组装，（ii）尿素可形成正的双氢键供体位点可以作为阴离子部分的有希望的受体。 3D，尿素官能化的TMU-18已成功合成为化学传感器，用于通过荧光信号选择性地检测爆炸性硝基芳香族化合物和羰基化合物。 TMU-18由于其特殊的多孔结构和可用的官能团而具有较强的发光发射能力，可有效用于检测灵敏度为10μM的三硝基苯酚（TNP），检测限为（LOD）。

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