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A novel 3D Zn-based coordination polymer (NH 2 -LCU-110 , LCU names Liaocheng University) with the formula [Zn(L1)(bpea) n (H 2 L1 ​= ​2-aminoterephthalic acid, bpea ​= ​1,2-bis(4-pyridyl)ethane), was hydrothermally synthesized from a flexible nitrogen-containing carboxylic acid ligand with various coordination modes as main ligands and nitrogen-containing auxiliary ligand with different structures. NH 2 -LCU-110 demonstrates an interesting 5-fold interpenetrating diamond structure. Luminescence measurements reveal that this complex has obvious emission enhancement and quenching towards Al3+ and Cu2+, respectively. The mixed matrix membranes (MMMs) incorporating NH 2 -LCU-110 and poly(methyl methacrylate) (PMMA) as well as simple test papers were both prepared for potential application. The MMMs can quickly detect Al3+ and Cu2+ and the original emission could be regenerated by lifting from the analytical solutions, demonstrating its fast response and good selectivity. The sensing mechanism was investigated in details by various measurements and compared with isostructural complex LCU-110 without –NH 2 groups. All observations indicate that introduction of Lewis basic –NH 2 groups can enhance the intermolecular interactions between the frameworks of coordination polymers and sensing analytes (Al3+ and Cu2+). An amino-functionalized coordination polymer NH 2 -LCU-110 exhibits luminescence turn-on/off toward Al3+/Cu2+, and its mixed matrix membranes and test papers were prepared. [Display omitted] • An amino-functionalized coordination polymer was employed as a multiresponsive luminescence sensor. • NH 2 -LCU-110 exhibits luminescence turn-on and turn-off behavior toward Al3+ and Cu2+, respectively. • Mixed matrix membranes (MMMs) and test papers made the detection more simple and convenient. [ABSTRACT FROM AUTHOR]

Urease may rapidly hydrolyze urea, causing a significant amount of ammonia to be released and decreasing the efficacy of urea fertilizers. However, urease inhibitors (UIs) can inhibit the interaction between urease and urea so that ammonium nitrogen can be absorbed by crops for a long time. In this paper, we developed and fabricated two Cu-based coordination polymers (Cu-CPs) to function as UIs by combining two aromatic carboxylic acids and a bis-pyridine-bis-amide ligand, which demonstrate outstanding urease inhibitory efficacy. Cu-CP-1 exhibits a pronounced inhibitory effect on the inhibitory activity of jack bean urease while the semi-inhibitory concentration (IC 50) value was 0.74 ± 0.01 μM, whereas the IC 50 value of Cu-CP-2 was 4.77 ± 0.51 μM. Furthermore, inhibitory activity against urease, kinetic, molecular docking, and comparisons of the title Cu-CPs and other complex-based materials have been comprehensively investigated. More importantly, the oxygen atoms of μ 2 -OH and –COO play important roles in urease inhibition activity. The structure–function relationship were further discussed which indicates that Cu-CPs can be used as a kind of UIs. By using different O-donor second auxiliary ligands, we have designed and synthesized two Cu-based CPs to operate as urease inhibitors which show excellent urease inhibitory activity. [Display omitted] • The development of UIs has been a matter of great concern to researchers. • Two Cu-CPs have been synthesized by using diverse O-donor ligands. • The Cu-CPs are served as UIs and show excellent urease inhibitory activity. • Inhibitory activity, kinetic, molecular docking of the Cu-CPs have been studied. [ABSTRACT FROM AUTHOR]

In this paper, two novel 1D uranyl coordination polymers, [(UO 2)(HPDTC)(H 2 O)]Cl (1) and [(UO 2)(DPA)(H 2 O) (2) based on pyridine acid have been synthesized using hydrothermal method. The structure was obtained with the help of a Single Crystal X-ray diffraction meter and further characterized by IR, UV–vis, TG and others. The compounds show good luminescence properties and the uranium center exhibits the same pentagonal bipyramid coordination geometry among the compounds. Their electrochemical properties have been investigated through Cyclic Voltammetry (CV) and Galvanostatic Charge/Discharge (GCD). It reveals the counterion ions in compound 1 improve the electrical properties as the capacity is 56.94 ​F ​g−1. Two novel 1D uranyl coordination polymers based on pyridine acids have been synthesized using the hydrothermal method and further characterized by IR, UV–vis, TG and others. The uranium center of the two compounds exhibits the same pentagonal bipyramid coordination geometry according to the results of the Single-crystal X-ray diffraction. Their electrochemical properties have been investigated through Cyclic Voltammetry (CV) and Galvanostatic Charge/Discharge (GCD), and it reveals the counterion ions in compound 1 improve the electrical properties as the capacity is 56.94 ​F ​g−1. [Display omitted] • Two novel uranium derivatives based on pyridine carboxylic have been synthesized. • The compounds with charming fluorescence properties because of the uranium. • The electrochemistry properties were studied and compound 1 with a capacity of 56.94 Fg-1. [ABSTRACT FROM AUTHOR]