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복잡계 자기조립 연구단
복잡계 자기조립 연구단
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Structural Control of Metal-Organic Framework Bearing N-Heterocyclic Imidazolium Cation and Generation of Highly Stable Porous Structure

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Title
Structural Control of Metal-Organic Framework Bearing N-Heterocyclic Imidazolium Cation and Generation of Highly Stable Porous Structure
Author(s)
Kim H.; Hyunyong Kim; Kimoon Kim; Eunsung Lee
Publication Date
2019-05
Journal
INORGANIC CHEMISTRY, v.58, no.10, pp.6619 - 6627
Publisher
AMER CHEMICAL SOC
Abstract
Building a well-defined porous structure with permanent porosity in a metal-organic framework (MOF) is significant to achieve selective adsorption of guest molecules and its practicality. There have been various efforts to develop new functional frameworks, but chasing both advantages (functions and stability) is always challenging. Herein, we report a highly stable and porous 3D MOF having an imidazolium group. By adjusting counteranions of the imidazolium group, we could prepare two distinct MOFs. The 2D MOF constructed by applying bicarbonate anion inhibited three-dimensional growth and showed N 2 adsorption with BET results of 330 m 2 /g. However, the 3D MOF (Imi-3D) formed by applying chloride anion on the imidazolium group evolved into a 4-fold interpenetrated cube structure. The Imi-3D has high porosity in spite of the folded nature of the structure, with BET results of 1400 m 2 /g. Interestingly, unlike the usual trend of unstable zinc carboxylate based MOFs, the multiple π-π interactions of the Imi-3D presents a unique tolerance toward various solvents, especially toward water, for 6 months and without decomposition or collapse of the framework. Moreover, since the porous 3D MOF consists of imidazolium groups, the MOF shows a cationic feature with strong adsorption toward anionic guests in aqueous media. Copyright © 2019 American Chemical Society.
URI
https://pr.ibs.re.kr/handle/8788114/5846
ISSN
0020-1669
Appears in Collections:
Center for Self-assembly and Complexity(복잡계 자기조립 연구단) > Journal Papers (저널논문)
Files in This Item:
acs.inorgchem.8b03173.pdfDownload

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