Abstract
Synthesis and schematic representation showing intra and intermolecular interactions in [(ZnTMP)(4,4′-bipy)2]
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•New (4,4′-bipyridine) meso-tetrakis(2,4,6-trimethylphenyl)porphyrinato) zinc(II) (III) was synthesized.•Single-crystal X-ray data showed octahedral disposition around Zn(II) and formation of 1D coordination polymer chain.•Photo-physical data indicated red shifted bands, blue shifted emission maxima and modulated frontier molecular orbitals.•Electrochemical data suggested quasi-reversible reduction of complex (III).•Compounds were used for the oxidative degradation of calmagite in aqueous solution.
A new metalloporphyrin (4,4′-bipyridine)meso-tetrakis(2,4,6-trimethylphenyl) porphyrinato) zinc(II) ([Zn(TMP)(4,4′-bpy)]) (3) was obtained by reacting meso-tetrakis(2,4,6-trimethylphenyl)porphyrinato) zinc(II) [Zn(TMP)] (2) and 4,4′-bipyridine (4,4′-bpy). The starting material meso-tetrakis(2,4,6-trimethylphenyl)porphyrine (H2TMP, 1) as well as complexes (2 and 3) were characterized by the means of microanalysis, 1H NMR, and ESI-MS techniques. The molecular structure of the final complex (3) was also confirmed by single crystal X-ray crystallography. Detailed photo-physical and electrochemical properties of the complexes were also determined. The oxidative degradation ability of complexes (2 and 3) was evaluated and compared against an organic dye (calmagite). When used as catalyst, complex (2) showed better efficiency ~ 48% than the complex (3) (41%). Overall, this work not only explores the ability of metalloporphyrin to degrade organic dyes in aqueous solution, but also showed that the degradation ability of a metalloporphyrin complex can be fine-tuned by varying axial ligand.