The microporous zirconium-based MOF, as known [PCN-221], was successfully prepared by the solvothermal reaction method using meso-tetra(4-carboxyphenyl) porphyrin (TCPP) as a ligand and used as a fluorescent sensor for sensitive and selective recognition of Hg²⁺ ions, DMF small molecule, and adsorption of Hg²⁺ ions. The sensing of [PCN-221] showed a quenching response of Hg²⁺ ions with a fast fluorescent response rate under <1 min. The fluorescence quenching constant is calculated to be 4021.9 M^-1 by linear correlation for Hg²⁺ ions in a low concentration range from 0 to 300 μM, also the detection limit was calculated to be 0.01 μM. Moreover, the prepared [PCN-221] can perform as a fluorescence turn-off sensor for highly sensitive detection of DMF in methanol solution at the line range of 50–1000 μM and, the quenching constant is calculated to be 28.231 M^-1 by the experiment fluorescence titration for a DMF in low concentration, also the detection limit was calculated to be 0.12 μM. As well as, the [PCN-221] exhibited a high adsorption of Hg²⁺ ions in water solution between hazardous heavy metals and compare to other MOFs reported to date. The Hg²⁺ adsorption process follows pseudo-second-order kinetics, removing 95% of the metals in 30 min. Totally, the UV–Vis study provides insight to assist realized the interaction mechanism between [PCN-221] and Hg²⁺ ions.

以介孔四（4-羧基苯基）卟啉（TCPP）为配体，通过溶剂热反应法成功制备了基于微孔锆的MOF [PCN-221]，并用作敏感和选择性识别的荧光传感器Hg ²⁺离子，DMF小分子的吸附和Hg ²⁺离子的吸附。[PCN-221]的感测显示Hg ²⁺离子的猝灭响应，在<1分钟内具有快速的荧光响应速率。对于Hg ^2+，通过线性相关计算得出荧光猝灭常数为4021.9 M ^-1离子的低浓度范围为0至300μM，计算出的检出限为0.01μM。此外，所制备的[PCN-221]可以作为荧光执行关闭传感器，用于在50-1000μM的行范围，并且在淬灭常数计算为28.231甲醇溶液DMF的高灵敏度检测^-1通过在低浓度DMF的实验荧光滴定中，检测限经计算为0.12μM。而且，[PCN-221]在有害重金属之间的水溶液中还表现出Hg ²⁺离子的高吸附性，并且与迄今报道的其他MOF相比。汞²⁺吸附过程遵循拟二级动力学，在30分钟内去除了95％的金属。总体而言，UV-Vis研究提供了见识，可帮助实现[PCN-221]与Hg ²⁺离子之间的相互作用机理。