Porosity Properties of the Conformers of Sodalite-like Zeolitic Imidazolate Frameworks
- Authors
- Choi, Y.; Noh, K.; Lee, J.; Kim, J.
- Issue Date
- Nov-2018
- Publisher
- American Chemical Society
- Citation
- Journal of the American Chemical Society, v.140, no.44, pp.14586 - 14589
- Journal Title
- Journal of the American Chemical Society
- Volume
- 140
- Number
- 44
- Start Page
- 14586
- End Page
- 14589
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/31062
- DOI
- 10.1021/jacs.8b08997
- ISSN
- 0002-7863
- Abstract
- The conformational isomers of zeolitic imidazolate frameworks (ZIFs) can have their own unique porosity and structural stability. We report that a new sodalite-like ZIF (termed β-ZIF-65(Zn)) is polymorphous with as the existing ZIF-65(Zn) (Zn(nIm)2, nIm = 2-nitroimidazolate) but has a different linker conformation in the six-membered rings of sodalite cages. This conformational isomerism leads to distinctive permanent porosity for each conformer, which has been verified by gas adsorption measurements. In addition, variable-temperature X-ray diffraction analyses indicate that β-ZIF-65(Zn) is more resistant to displacive phase transitions than ZIF-65(Zn). The activated β-ZIF-65(Zn) conformer adsorbs 2.8 times more benzene than the activated ZIF-65(Zn) at P/P0 = 0.3 and 298 K. This work suggests that other types of ZIF conformers can be discovered. © 2018 American Chemical Society.
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Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
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