title: A Zirconium Macrocyclic Metal-Organic Framework with Predesigned Shape-Persistent Apertures.
abstract: A microporous metal-organic framework (MOF) was synthesized from [Zr6O4(OH)4(C6H5COO)12] clusters and a triacid ligand based on a shape-persistent arylene ethynylene macrocycle. This framework, dubbed Zr-MCMOF, is held together by metal-ligand coordination and multiple weak interactions: hydrogen bonding, [π⋅⋅⋅π] stacking, and [C-H⋅⋅⋅π] interactions. The rigid ligand has a 9 Å-wide central void, which serves as a predesigned aperture for the 1D channels; all of the porosity of Zr-MCMOF comes from the ligand. The resulting framework possesses high hydrolytic and thermal stability and a flexible structure unique among Zr-based MOFs.
authors.affiliation: Department of Chemistry, Tamkang University, No.151, Yingzhuan Rd., Tamsui Dist., New Taipei City, 25137, Taiwan.
authors.forename: Teng-Hao
authors.initials: TH
authors.lastname: Chen
authors.affiliation: Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Ilya
authors.initials: I
authors.lastname: Popov
authors.affiliation: Department of Chemistry, University of Houston, 112 Fleming Building, Houston, TX, 77204-5003, USA.
authors.forename: Ognjen Š
authors.identifier: 0000-0002-7876-9034
authors.initials: OŠ
authors.lastname: Miljanić
keywords: 1D channels; macrocycles; metal-organic frameworks; shape persistency; zirconium