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Microporosity Enhancement in a One‐Dimensional Imidazolium Caged Metal‐Organic Framework by Highly Selective Postsynthetic Removal of Inner Yttrium Clusters
Author(s) -
Ko Nakeun,
Lee HyunJung,
Seo Younggyu,
Jung Daesung,
Hwang ChanCuk,
Kim Jaheon,
Lee Eunsung
Publication year - 2021
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.12339
Subject(s) - yttrium , chemistry , sorption , metal organic framework , ligand (biochemistry) , alkali metal , formate , cluster (spacecraft) , metal , powder diffraction , crystallography , inorganic chemistry , decomposition , organic chemistry , catalysis , oxide , biochemistry , receptor , adsorption , computer science , programming language
A one‐dimensional (1D) metal‐organic caged framework ( YMOF‐Y ) was obtained via self‐assembly of yttrium cations with a U‐shape imidazolium based ligand and the structure was elucidated by single‐crystal X‐ray diffraction analysis. The YMOF‐Y has a unique 1D chain structure composed of octa‐imidazolium based cages. Inside the cage, an inner Y 4 cluster connected to yttrium cations of the cage through formate anions is present. The microporosity and flexibility of YMOF‐Y can be improved by an unprecedented postsynthetic removal of the Y 4 clusters from the cage by washing with alkali metal solutions. The removal of the Y 4 cluster is reflected in a significant change in the properties of the metal‐organic framework (MOF), as confirmed by carbon dioxide sorption measurements and variable temperature powder X‐ray diffraction analysis.