Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 13, Pages 7030-7035Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202015257
Keywords
activation method; flexibility; molecular recognition; motility cooperation; porous coordination polymers
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Funding
- KAKENHI from the Japan Society for the Promotion of Science (JSPS) [JP18H05262, JP19K15584, JP18H02072, JP19H05381]
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Incorporating local mobility into a flexible framework through intra-framework pi-pi interactions offers a new approach to flexible porous coordination polymers (PCPs) design. This strategy enables structural transitions and different guest-free structures in PCPs under activation conditions. The flexibility incorporated allows for discrimination of C6 alkane isomers based on gate-opening behaviors, with potential applications in isomer separation for high octane gasoline production.
Incorporating local mobility into a flexible framework promises to create cooperative properties unattainable in a conventional soft porous crystal. In this study, we propose a design strategy that integrates substituent moieties and a flexible porous crystal framework via intra-framework pi-pi interactions. This integration not only facilitates framework structural transitions but also gives the porous coordination polymers (PCPs) different guest-free structures that depend on the activation conditions. The incorporated flexibility gives the material the ability to discriminate C6 alkane isomers based on different gate-opening behaviors. Thus, the PCP has potential applications in C6 isomer separation, a critical step in the petroleum refining process to produce gasoline with high octane rating. This strategy, based on ligand designability, offers a new approach to flexible PCP structural and functional design.
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