Synthesis, characterization, and optical properties of four coordination polymers with 3,5-dicarboxy-1-(4-cyanobenzyl)pyridin-1-ium bromide

Kaya, Meltem; Demir, Sevde; Arıcı, Mürsel; Wriedt, Mario; Yeşılel, Okan Zafer

doi:10.1016/j.poly.2022.115863

Cited by 3 publications

(1 citation statement)

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“…Coordination polymers, which are generated via the coordination of metal atoms and organic bridging ligands, are formed as one-dimensional (1D) chains, two-dimensional (2D) layers, or three-dimensional (3D) frames. Coordination polymers have been of great interest to researchers for years as it has various application areas such as drug transport, − luminescence, , magnetism, − gas adsorption and separation, − dye degradation, and adsorption. − Although coordination polymers are pure and relatively easy to obtain by the crystallization method, their final structures, topologies, and coordination geometries; it is significantly affected by various parameters such as solvent used in the synthesis, pH of the environment, temperature, counterions, and weak interactions. Therefore, the structure of the synthesized complexes is not usually a predicted structure.…”

Section: Introductionmentioning

confidence: 99%

2D Zinc(II)-Coordination Polymer Based on 1,3,5-Benzenetricarboxylate and Novel 4,4′-Bis((2-isopropyl-1H-imidazole-1-yl)methyl)-1,1′-biphenyl Ligands for the Adsorption of Methyl Orange

Demir,

Alp Arıcı,

Erer

2023

Crystal Growth & Design

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A novel 2D coordination polymer with the formula {[bisopibiphenH2][Zn2(btc)2(H2O)2]} n (complex 1) was produced via the solvothermal interaction of benzene-1,3,5-tricarboxylic acid (H3btc) ligand, novel 4,4′-bis((2-isopropyl-1H-imidazole-1-yl)methyl)-1,1′-biphenyl (bisopibiphen) compound, and Zn(II) ion. The structure of the final complex was elucidated by single crystal/powder X-ray diffraction methods (SCXRD/PXRD), scanning electron microscopy–energy dispersive spectroscopy, Fourier transform infrared spectroscopy, and elemental analysis. According to the results obtained from the SCXRD method of the complex, it was determined that the 2D complex was formed by Zn(II) central atoms with a distorted tetrahedral geometry and btc3– ligand. The novel bisopibiphen compound used was protonated and acted as a countercation within the asymmetric unit, thus forming the 3D supramolecular structure because of interactions between the 2D layers. Additionally, the topological and thermal characteristics of the complex were examined. In a later stage, the adsorption performance of complex 1 for methyl orange (MO) dye was examined along with the influence of various parameters. Kinetic and isotherm studies were also conducted to explain the nature of the MO adsorption process nature. According to this, the experimental data were well-matched by the pseudo-second order kinetics and Langmuir isotherm model. The maximum adsorption capacity of complex 1 was determined as 735.89 mg g–1 at 20 °C and pH 4.0. These findings indicated that complex 1 could be used as a promising effective adsorbent for MO adsorption from aqueous solutions.

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