title: Triple framework interpenetration and immobilization of open metal sites within a microporous mixed metal-organic framework for highly selective gas adsorption.
abstract: A three-dimensional triply interpenetrated mixed metal-organic framework, Zn(2)(BBA)(2)(CuPyen)·G(x) (M'MOF-20; BBA = biphenyl-4,4'-dicarboxylate; G = guest solvent molecules), of primitive cubic net was obtained through the solvothermal reaction of Zn(NO(3))(2), biphenyl-4,4'-dicarboxylic acid, and the salen precursor Cu(PyenH(2))(NO(3))(2) by a metallo-ligand approach. The triple framework interpenetration has stabilized the framework in which the activated M'MOF-20a displays type-I N(2) gas sorption behavior with a Langmuir surface area of 62 m(2) g(-1). The narrow pores of about 3.9 Å and the open metal sites on the pore surfaces within M'MOF-20a collaboratively induce its highly selective C(2)H(2)/CH(4) and CO(2)/CH(4) gas separation at ambient temperature.
authors.affiliation: Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-069, USA.
authors.forename: Zhangjing
authors.initials: Z
authors.lastname: Zhang
authors.forename: Shengchang
authors.initials: S
authors.lastname: Xiang
authors.forename: Kunlun
authors.initials: K
authors.lastname: Hong
authors.forename: Madhab C
authors.initials: MC
authors.lastname: Das
authors.forename: Hadi D
authors.initials: HD
authors.lastname: Arman
authors.forename: Maya
authors.initials: M
authors.lastname: Garcia
authors.forename: Jalal U
authors.initials: JU
authors.lastname: Mondal
authors.forename: K Mark
authors.initials: KM
authors.lastname: Thomas
authors.forename: Banglin
authors.initials: B
authors.lastname: Chen