Chelating Metal Ions in a Metal-Organic Framework for Constructing a Biomimetic Catalyst Through Post-modification

Crystal engineering, as a burgeoning technology, has been widely used to construct metalloporphyrins biomimetic catalysts. Herein, a bimetallic metal-organic framework (MOF) was constructed by 4-(4-carboxyphenyl)-1,2,4-triazole ligand, Co 2+ and Zr 4+ metal ions by solvothermal reaction(named PFC-88...

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Bibliographic Details
Published in:Chemical research in Chinese universities 2022-12, Vol.38 (6), p.1542-1546
Main Authors: Pang, Kuan, Xue, Huan, Liu, Haixiong, Sun, Jing, Liu, Tianfu
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Analytical Chemistry
Bimetals
Biomimetics
Catalysts
Catalytic activity
Chelation
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Cobalt
Diamines
Inorganic Chemistry
Ligands
Metal ions
Metal-organic frameworks
Organic Chemistry
Oxidation
Phenylenediamine
Physical Chemistry
Porphyrins
Single crystals
X ray absorption
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Summary:Crystal engineering, as a burgeoning technology, has been widely used to construct metalloporphyrins biomimetic catalysts. Herein, a bimetallic metal-organic framework (MOF) was constructed by 4-(4-carboxyphenyl)-1,2,4-triazole ligand, Co 2+ and Zr 4+ metal ions by solvothermal reaction(named PFC-88). A N , N -chelation site was found between the two adjacent ligands in PFC-88, consequently a porphyrin-like structure was obtained through chelating Fe 3+ in this site by post-modification, named PFC-88-Fe. The result of a single crystal X-ray technology verified that Fe ions were successfully metalated in the N , N -chelation site of PFC-88, which is assisted by the X-ray absorption near-edge structure(XANES) spectra. An o -phenylenediamine oxidation reaction was applied to assessing the catalytic activity of PFC-88-Fe, in which the absorbance increases of phenazine-2,3-diamine at λ =418 nm were recorded by absorption spectroscopy in kinetic mode, exhibiting the application potential as a biomimetic catalyst.
ISSN:1005-9040
2210-3171
DOI:10.1007/s40242-022-2125-7