title: Ultrahigh porosity in metal-organic frameworks.
abstract: Crystalline solids with extended non-interpenetrating three-dimensional crystal structures were synthesized that support well-defined pores with internal diameters of up to 48 angstroms. The Zn4O(CO2)6 unit was joined with either one or two kinds of organic link, 4,4',4''-[benzene-1,3,5-triyl-tris(ethyne-2,1-diyl)]tribenzoate (BTE), 4,4',44''-[benzene-1,3,5-triyl-tris(benzene-4,1-diyl)]tribenzoate (BBC), 4,4',44''-benzene-1,3,5-triyl-tribenzoate (BTB)/2,6-naphthalenedicarboxylate (NDC), and BTE/biphenyl-4,4'-dicarboxylate (BPDC), to give four metal-organic frameworks (MOFs), MOF-180, -200, -205, and -210, respectively. Members of this series of MOFs show exceptional porosities and gas (hydrogen, methane, and carbon dioxide) uptake capacities. For example, MOF-210 has Brunauer-Emmett-Teller and Langmuir surface areas of 6240 and 10,400 square meters per gram, respectively, and a total carbon dioxide storage capacity of 2870 milligrams per gram. The volume-specific internal surface area of MOF-210 (2060 square meters per cubic centimeter) is equivalent to the outer surface of nanoparticles (3-nanometer cubes) and near the ultimate adsorption limit for solid materials.
authors.affiliation: Center for Reticular Chemistry at the California NanoSystems Institute, and Department of Chemistry and Biochemistry, University of California Los Angeles (UCLA), 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA.
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Furukawa
authors.forename: Nakeun
authors.initials: N
authors.lastname: Ko
authors.forename: Yong Bok
authors.initials: YB
authors.lastname: Go
authors.forename: Naoki
authors.initials: N
authors.lastname: Aratani
authors.forename: Sang Beom
authors.initials: SB
authors.lastname: Choi
authors.forename: Eunwoo
authors.initials: E
authors.lastname: Choi
authors.forename: A Ozgür
authors.initials: AO
authors.lastname: Yazaydin
authors.forename: Randall Q
authors.initials: RQ
authors.lastname: Snurr
authors.forename: Michael
authors.initials: M
authors.lastname: O'Keeffe
authors.forename: Jaheon
authors.initials: J
authors.lastname: Kim
authors.forename: Omar M
authors.initials: OM
authors.lastname: Yaghi
mesh_terms: D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry; D003460:Crystallization; D006859:Hydrogen / Q000737:chemistry; D008670:Metals / Q000737:chemistry*; D008697:Methane / Q000737:chemistry; D015394:Molecular Structure; D049329:Nanostructures; D009584:Nitrogen / Q000737:chemistry; D009930:Organic Chemicals / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties; D015032:Zinc / Q000737:chemistry*
chemical_list: D008670:Metals; D009930:Organic Chemicals; D002245:Carbon Dioxide; D006859:Hydrogen; D015032:Zinc; D009584:Nitrogen; D008697:Methane