Structures, luminescence and magnetic properties of three 3D lanthanide–zinc heterometallic coordination polymers based on 3-amino-1,2,4-triazole and Oxalate

Crystal structure of bis(5-methoxy-2-(((2-oxidoethyl)imino)methyl)phenolate-κ3 O,N,O′)manganes(IV), C20H22N2O6Mn

C20H22N2O6Mn, orthorhombic, Pccn (no. 56), a = 14.1678(16) Å, b = 14.3469(18) Å, c = 19.335(2) Å, V = 3930.1(8) Å3, Z = 8, R gt(F) = 0.0504, wR ref(F 2) = 0.1441, T = 293(2) K.

Mimic Carbonic Anhydrase Using Metal-Organic Frameworks for CO2 Capture and Conversion

Carbonic anhydrase (CA) is a zinc-containing metalloprotein, in which the Zn active center plays the key role to transform CO₂ into carbonate. Inspired by nature, herein we used metal-organic frameworks (MOFs) to mimic CA for CO₂ conversion, on the basis of the structural similarity between the Zn coordination in MOFs and CA active center. The biomimetic activity of MOFs was investigated by detecting the hydrolysis of para-nitrophenyl acetate, which is a model reaction used to evaluate CA activity. The biomimetic materials (e.g., CFA-1) showed good catalytic activity, and excellent reusability, and solvent and thermal stability, which is very important for practical applications. In addition, ZIF-100 and CFA-1 were used to mimic CA to convert CO₂ gas, and exhibited good efficiency on CO₂ conversion compared with those of other porous materials (e.g., MCM-41, active carbon). This biomimetic study revealed a novel CO₂ treatment method. Instead of simply using MOFs to absorb CO₂, ZIF-100 and CFA-1 were used to mimic CA for in situ CO₂ conversion, which provides a new prospect in the biological and industrial applications of MOFs.