A uranium-based metal-organic framework, [(UO2)(H2DTATC)] (HNU-39, H4DTATC = 5,5'-(9,10-dihydroxy-4a,9,9a,10-tetrahydroanthracene-9,10-diyl)diisophthalic acid) was successfully prepared by a hydrothermal method. The structure of HNU-39 comprises UO8 hexagonal bipyramids linked by doubly protonated DTATC ligands, forming a ribbon arrangement. It is worth noting that the DTATC ligand was transformed in situ from 5,5'-(anthracene-9,10-diyl)diisophthalic acid (H4DPATC) during the synthesis of HNU-39. Research on fluorescence properties has shown that HNU-39 exhibits fluorescence turn-on response under alkaline conditions and could be used as a potential pH sensor. Moreover, HNU-39 can also be successfully applied for pH sensing in real samples from a sewage treatment plant. The sensing mechanism can be interpreted as OH- ions reacting with the protons in the organic ligand of HNU-39.

中文翻译：

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原位配体形成驱动的铀酰有机骨架合成作为启动荧光pH传感器。

一种基于铀的金属-有机骨架，[（UO2）（H2DTATC）]（HNU-39，H4DTATC = 5,5'-（9,10-二羟基-4a，9,9a，10-四氢蒽-9,10-通过水热法成功地制备了二（二基）二间苯二甲酸）。HNU-39的结构包含UO8六角形双锥体，双锥体质子化的DTATC配体相连，形成带状排列。值得注意的是，在HNU-39合成过程中，DTATC配体是从5,5'-（蒽-9,10-二基）二间苯二甲酸（H4DPATC）原位转化而来的。对荧光性质的研究表明，HNU-39在碱性条件下表现出荧光开启响应，可以用作潜在的pH传感器。此外，HNU-39还可以成功地应用于污水处理厂的实际样品中的pH传感。