Metal Coordination Polymers Constructed From Aromatic Carboxylic Acid And Nitrogen-Containing Ligands

Aromatic carboxylic acids and nitrogen-containing ligands are available for the synthesis of coordination polymers?CPs?and exert influence on the coordination environment and final structure.Reasonable selection for two types of ligands to regulate the skeletal structure and properties of CPs is still the focus.Therefore,ten CPs were constructed by imidazole/benzimidazole nitrogen-containing heterocyclic ligands,different aromatic dicarboxylic acids and CoII/CdII.The influence of ligands on the structure and properties were further explored through structural characterization and comparison,providing some guidance for the targeted regulation and development of functional polymers.Two CoII CPs were obtained through the compounded technology of 4,4'-bis?imidazol-1-yl?biphenyl?L1?and disparate substituted aromatic dicarboxylic acids.1 and 2 present 2D hcb planar hexagonal net and “W”-shaped sql grid respectively.3?4 based on 1,3-bis?5,6-methylbenzimidazol-1-yl?propane?L2?were developed with two aromatic dicarboxylic acids.They are 3D?4,4,4?-connected network with point symbol of {4.85}{42.6.83}2{43.62.8} and 2D sql layer respectively.Six CPs were prepared with the mixed-ligand strategy of L2,CdII and different types of aromatic dicarboxylic acids under the hydrothermal or solvothermal conditions.5 feaures 1D ladder shaped chain.6?10 exhibit 2D 3,4L83,3,4L27,3,4L83,3,5L2 and wave-like sql net,respectively.1?2 can act as catalysts to degrade methylene blue?MB?under natural sunlight.3?4 as visible light driven catalysts can degrade MB and methyl orange?MO?.5?10 show the high photocatalytic activities for the degradation of MB under ultraviolet irradiation.1?10 can serve as photocatalysts to rapidly degrade MB with the efficiency range of 85%?99%.3 as a chemosensor can sensitively and selectively recognize acetylacetone?acac?in ethanol?Et OH?and aqueous solutions and monitor Cr₂O₇^2-?pH = 3.0?in water.7 presented highly sensitive and selective response to Cr₂O₇^2??pH = 3.0?and CrO₄^2??pH = 13.0?in water media,providing some guidance for water quality monitoring.Figure 65;Table 20;Reference 75...