The Selective CO Adsorption and Photothermal Conversion Study of an Azo-Based Cobalt-MOF Material.

A new metal-organic framework (MOF), [Co(L)(azpy)] (compound , HL = 5-(pyridin-4-ylmethoxy)-isophthalic acid, azpy = 4,4'-azopyridine), was synthesized by a solvothermal method and further characterized by elemental analysis, IR spectra, thermogravimetric analysis, single-crystal and powder X-ray diffraction. The X-ray single-crystal diffraction analysis for compound indicated that two L2 ligands connected to two cobalt atoms resulted in a macrocycle structure. Through a series of adsorption tests, we found that compound exhibited a high capacity of CO, and the adsorption capacity could reach 30.