Abstract
A new coordination polymer was synthesized under hydrothermal conditions, namely [Zn(Bpy)(DHTA)0.5]n (DHTA = 2,5-dihydroxy-1,4-terephthalic acid tetra-anion, Bpy = 2,2’-bipyridine). There is one Zn(II) ion in [Zn(Bpy)(DHTA)0.5]n, the metal center Zn(II) is five-coordinated and forms a slightly twisted square pyramidal geometry. It remains stable at temperatures as high as 380 °C, and a sharp drop in weight is found in the temperature range of 380–570 °C. The calculation results show that the residual is zinc(II) oxide (ZnO). The emission peak of the complex appears at 365 nm (λex = 366 nm). The photoluminescence results suggest that the complex has potential as a new luminescence material. At the same time, in luminescence explorations experiments, the complex showed a high degree of selectivity and sensitivity to organic solvents, acetone (DMK) and metal ions (Fe3+).
Highlights
IntroductionMetal organic frameworks (MOF) and coordination polymers (CPs) have become attractive for academic and industrial fields, due to their luminescence [1,2,3,4,5,6], electrical conductivity [7], chemical sensing [8,9,10,11,12], magnetic [13], catalytic activity [14,15], gas storage or separation [16,17,18,19,20] and other applications leading to them having different functional characteristics in economic, technical and environmental aspects
A host of metal organic frameworks (MOF) are widely known for their applications in the examination of organic and inorganic molecules and metal ions, and their excellent performance has attracted widespread
Orbital to the LUMO + 2 orbital From the MO diagram we have identified that the orbitals correspond to the n-pi* transition, which is caused by the ligand-to-ligand (DHTA-to-Bpy) charge transfer transition (LLCT)
Summary
Metal organic frameworks (MOF) and coordination polymers (CPs) have become attractive for academic and industrial fields, due to their luminescence [1,2,3,4,5,6], electrical conductivity [7], chemical sensing [8,9,10,11,12], magnetic [13], catalytic activity [14,15], gas storage or separation [16,17,18,19,20] and other applications leading to them having different functional characteristics in economic, technical and environmental aspects. Zhang and co-workers have synthesized a good luminescent zinc(II) coordination complex sensor that is beneficial to the environment and has a wide range of applications for detecting environmental pollutants in organic solutions or water [22]. Rosales-Vázquez et al have successfully synthesized a new type of luminescent water-stabilized zinc complex, which has excellent photoluminescence chemical sensing ability for cyanide ions in sewage [23].
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