Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 24, Issue 24, Pages 6412-6417Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201705858
Keywords
coordination modes; gas separation; mechanisms; polymers; solid-state structures; structure elucidation
Categories
Funding
- National Natural Science Foundation of China [21671102]
- Natural Science Foundation of Jiangsu Province [BK20161538]
- Innovative Research Team Program by the Ministry of Education of China [IRT17R54]
- Six Talent Peaks Project in Jiangsu Province [JY-030]
- State Key Laboratory of Materials-Oriented Chemical Engineering [ZK201406]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- JSPS KAKENHI [25000007]
- Grants-in-Aid for Scientific Research [16K17959, 25000007] Funding Source: KAKEN
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Two porous coordination polymers (PCPs) with different topologies (NTU-19: sql and NTU-20: dia) underwent finely controlled, stepwise crystal conversions to yield a common water-stable, flexible 2D framework (NTU-22: kgm). The crystal conversions occurred directly at higher temperature via the 3D intermediate (NTU-21: nbo), which could be observed at lower temperature. The successful isolation of the intermediate product of NTU-21, characterization with in situ PXRD and UV/Vis spectra were combined with DFT calculations to allow an understanding of the dynamic processes at the atomic level. Remarkably, breakthrough experiments demonstrate NTU-22 with integral structural properties allowed significant CO2/CH4 mixture separation.
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