Gas Uptake and Supercapacitor Performance of a Highly Connected Porous Co-Metal–Organic Framework Induced by Ligand Bulk

• DOI: 10.1021/acs.cgd.7b00215
• Publication Date: 2017-05-05T18:18:51Z
• Authors: Xiang-Yang Hou; Xiao Wang; Shu-Ni Li; Yu-Cheng Jiang; Man-Cheng Hu; Quan-Guo Zhai
• Keywords: Pseudocapacitor; Linker

The mimic of a (3,9)-connected xmz framework generates novel highly connected Co-metal–organic (SNNU-80) constructed by trigonal prismatic [Co3(OH)(COO)6] building blocks and tripodal pyridyl-dicarboxylate ligands (BPYDB = 4,4′-(4,4′-bipyridine-2,6-diyl)-dibenzoic acid). Compared to the nonporous Co-pyridine-3,5-dicarboxylate metal–organic (MOF), extension triangular linker leads different geometrical distribution thus porous structure with topology 3,3,9T2 for SNNU-80. Four types polyhedral cages coexist together, which produce permanent micro- mesoporosity. Different from MCF-18 assembled BPYDB [Ni3(OH)(COO)6] showing drastic breathing, SNNU-80 is not flexible. As result, shows remarkable CO2 uptake capacity as well high C2 hydrocarbons over CH4 selectivity. Furthermore, electrochemical measurements show that an idea electrode material supercapacitors due its stable pseudocapacitor contribution introduced mixed valent system.