title: Morphological and Structural Evolutions of Metal-Organic Framework Particles from Amorphous Spheres to Crystalline Hexagonal Rods.
abstract: Compositions as well as morphologies and structures of particles are vital factors that define their properties and applications. However, the morphology and structure changes associated with the composition change of metal-organic frameworks (MOFs) are barely studied. Herein, we report the morphology and structure changes of MOF particles associated with the ratio of two organic linkers incorporated within MOF particles, when they are constructed from the reactions of In(NO3)3 in the presence of isophthalic acid (H2IPA) and/or 1,4-benzenedicarboxylic acid (H2BDC). Two tendencies—the tendency of BDC and In(3+) to form porous crystalline hexagonal rods, and the tendency of IPA and In(3+) to form non-porous amorphous spherical particles—compete during the formation of MOF particles. Eventually, the incorporated ratio of BDC and IPA within the MOF particles, and thus their morphology and porosity, are controlled by altering the relative amounts of H2BDC and H2IPA used during the reactions.
authors.affiliation: Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749 (Korea).
authors.forename: Hee Jung
authors.initials: HJ
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749 (Korea).
authors.forename: Junghun
authors.initials: J
authors.lastname: We
authors.affiliation: Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749 (Korea).
authors.forename: Jun Oh
authors.initials: JO
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749 (Korea).
authors.forename: Dooyoung
authors.initials: D
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749 (Korea).
authors.forename: Wonhee
authors.initials: W
authors.lastname: Cha
authors.affiliation: Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749 (Korea).
authors.forename: Eunji
authors.initials: E
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749 (Korea).
authors.forename: Jeungwon
authors.initials: J
authors.lastname: Sohn
authors.affiliation: Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749 (Korea). moh@yonsei.ac.kr.
authors.forename: Moonhyun
authors.initials: M
authors.lastname: Oh
keywords: hybrid materials; metal-organic frameworks; microparticles; morphological evolutions; porosity