title: Deciphering the Spatial Arrangement of Metals and Correlation to Reactivity in Multivariate Metal-Organic Frameworks.
abstract: Thirty-six porphyrin-based metal-organic frameworks (MOFs) with composition of (M3O)2(TCPP-M)3and M3O trigonal SBUs of various metals, Mg3O, Mn3O, Co3O, Ni3O, and Fe3O including mixed-metal SBUs, MnxFe3-xO, NixFe3-xO, CoxNi3-xO, MnxCo3-xO, MnxMg3-xO, and MnxNi3-xO were synthesized and characterized. These multivariate MOFs (MTV-MOFs) were examined by X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectra, and for the first time, their metal spatial arrangement deciphered and were found to exist in the form of either domains or well-mixed. We find that MTV-MOFs with well-mixed metals in their SBUs, rather than the SBUs having one kind of metal but different from one SBU to another, perform better than the sum of their parts in the test reaction involving the photo-oxidation of 1,5-dihydroxynaphthalene.
authors.affiliation: Key Laboratory of Biomedical Polymers-Ministry of Education, College of Chemistry and Molecular Sciences and §The Institute for Advanced Studies, Wuhan University , Wuhan 430072, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Key Laboratory of Biomedical Polymers-Ministry of Education, College of Chemistry and Molecular Sciences and §The Institute for Advanced Studies, Wuhan University , Wuhan 430072, China.
authors.forename: Hengjiang
authors.initials: H
authors.lastname: Cong
authors.affiliation: Key Laboratory of Biomedical Polymers-Ministry of Education, College of Chemistry and Molecular Sciences and §The Institute for Advanced Studies, Wuhan University , Wuhan 430072, China.
authors.forename: Hexiang
authors.initials: H
authors.lastname: Deng