title: Carbon Dioxide Capture by a Metal-Organic Framework with Nitrogen-Rich Channels Based on Rationally Designed Triazole-Functionalized Tetraacid Organic Linker.
abstract: A semirigid tetraacid linker H4L functionalized with 1,2,3-triazole was rationally designed and synthesized to access nitrogen-rich MOFs for selective adsorption of CO2. The cadmium MOF, that is, Cd-L, obtained by the reaction of H4L with Cd(NO3)2, is found to be a 3D porous framework structure that is robust to desolvation. Crystal structure analysis reveals channels that are decorated by the triazole moieties of L. Gas adsorption studies show that Cd-L MOF permits remarkable CO2 uptake to the extent of 99 and 1000 cc/g at 1 and 30 bar, respectively, at 0 °C. While literature survey reveals that MIL-112, constructed from a 1,2,3-triazole functionalized linker, exhibits no porosity to gas adsorption due to structural flexibility, the results with Cd-L MOF described herein emphasize how rigidification of the organic linker improves gas uptake properties of the resultant MOF.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India.
authors.forename: Saona
authors.initials: S
authors.lastname: Seth
authors.affiliation: Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India.
authors.forename: Govardhan
authors.initials: G
authors.lastname: Savitha
authors.affiliation: Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India.
authors.forename: Jarugu Narasimha
authors.initials: JN
authors.lastname: Moorthy
mesh_terms: D000327:Adsorption; D002104:Cadmium / Q000737:chemistry*; D002245:Carbon Dioxide / Q000302:isolation & purification*; D008958:Models, Molecular; D009584:Nitrogen / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D016062:Porosity; D013499:Surface Properties; D014230:Triazoles / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D014230:Triazoles; D002104:Cadmium; D002245:Carbon Dioxide; D009584:Nitrogen