title: Exceptional chemical and thermal stability of zeolitic imidazolate frameworks.
abstract: Twelve zeolitic imidazolate frameworks (ZIFs; termed ZIF-1 to -12) have been synthesized as crystals by copolymerization of either Zn(II) (ZIF-1 to -4, -6 to -8, and -10 to -11) or Co(II) (ZIF-9 and -12) with imidazolate-type links. The ZIF crystal structures are based on the nets of seven distinct aluminosilicate zeolites: tetrahedral Si(Al) and the bridging O are replaced with transition metal ion and imidazolate link, respectively. In addition, one example of mixed-coordination imidazolate of Zn(II) and In(III) (ZIF-5) based on the garnet net is reported. Study of the gas adsorption and thermal and chemical stability of two prototypical members, ZIF-8 and -11, demonstrated their permanent porosity (Langmuir surface area = 1,810 m(2)/g), high thermal stability (up to 550 degrees C), and remarkable chemical resistance to boiling alkaline water and organic solvents.
authors.affiliation: *Department of Chemistry and Biochemistry, Center for Reticular Materials Research at California NanoSystems Institute, University of California, Los Angeles, CA 90095.
authors.forename: Kyo Sung
authors.initials: KS
authors.lastname: Park
authors.affiliation: *Department of Chemistry and Biochemistry, Center for Reticular Materials Research at California NanoSystems Institute, University of California, Los Angeles, CA 90095.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Ni
authors.affiliation: *Department of Chemistry and Biochemistry, Center for Reticular Materials Research at California NanoSystems Institute, University of California, Los Angeles, CA 90095.
authors.forename: Adrien P
authors.initials: AP
authors.lastname: Côté
authors.affiliation: Department of Chemistry Education, Seoul National University, Seoul 151-748, Korea.
authors.forename: Jae Yong
authors.initials: JY
authors.lastname: Choi
authors.affiliation: Institute for Chemical Physics, School of Science, Beijing Institute of Technology, Beijing 100081, People's Republic of China; and.
authors.forename: Rudan
authors.initials: R
authors.lastname: Huang
authors.affiliation: *Department of Chemistry and Biochemistry, Center for Reticular Materials Research at California NanoSystems Institute, University of California, Los Angeles, CA 90095.
authors.forename: Fernando J
authors.initials: FJ
authors.lastname: Uribe-Romo
authors.affiliation: Department of Chemistry Education, Seoul National University, Seoul 151-748, Korea.
authors.forename: Hee K
authors.initials: HK
authors.lastname: Chae
authors.affiliation: Department of Chemistry, Arizona State University, Tempe, AZ 85287.
authors.forename: Michael
authors.initials: M
authors.lastname: O'Keeffe
authors.affiliation: *Department of Chemistry and Biochemistry, Center for Reticular Materials Research at California NanoSystems Institute, University of California, Los Angeles, CA 90095; yaghi@chem.ucla.edu.
authors.forename: Omar M
authors.initials: OM
authors.lastname: Yaghi
mesh_terms: D018360:Crystallography, X-Ray; D007093:Imidazoles / Q000737:chemistry*; D015394:Molecular Structure; D013696:Temperature; D017641:Zeolites / Q000737:chemistry*
chemical_list: D007093:Imidazoles; D017641:Zeolites; C029899:imidazole