Morphological and Structural Evolutions of Metal-Organic Framework Particles from Amorphous Spheres to Crystalline Hexagonal Rods

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 morpholo...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2015-09, Vol.54 (36), p.10564-10568
Main Authors: Lee, Hee Jung, We, Junghun, Kim, Jun Oh, Kim, Dooyoung, Cha, Wonhee, Lee, Eunji, Sohn, Jeungwon, Oh, Moonhyun
Format: Article
Language:English
Subjects:
Acids
Amorphous structure
Atoms & subatomic particles
Construction
Crystal structure
Evolution
Formations
hybrid materials
Metal-organic frameworks
Metals
microparticles
morphological evolutions
Morphology
Porosity
Rods
Synthesis
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Summary: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 In3+ to form porous crystalline hexagonal rods, and the tendency of IPA and In3+ 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. Synthesis of MOF particles: Morphological and structural changes of metal–organic framework (MOF) particles are associated with the relative amounts of the two organic linkers (isophthalic acid and 1,4‐benzenedicarboxylic acid; see picture) incorporated within MOF particles. The incorporated ratios of the two organic linkers and thus the resulting morphology and porosity of the MOF were conveniently controlled.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201504873