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- Title
Interpenetration Isomerism in Triptycene‐Based Hydrogen‐Bonded Organic Frameworks.
- Authors
Li, Penghao; Li, Peng; Ryder, Matthew R.; Liu, Zhichang; Stern, Charlotte L.; Farha, Omar K.; Stoddart, J. Fraser
- Abstract
We describe an example of "interpenetration isomerism" in three‐dimensional hydrogen‐bonded organic frameworks. By exploiting the crystallization conditions for a peripherally extended triptycene H6PET, we can modulate the interpenetration of the assembled frameworks, yielding a two‐fold interpenetrated structure PETHOF‐1 and a five‐fold interpenetrated structure PETHOF‐2 as interpenetration isomers. In PETHOF‐1, two individual nets are related by inversion symmetry and form an interwoven topology with a large guest‐accessible volume of about 80 %. In PETHOF‐2, five individual nets are related by translational symmetry and are stacked in an alternating fashion. The activated materials show permanent porosity with Brunauer‐Emmett‐Teller surface areas exceeding 1100 m2 g−1. Synthetic control over the framework interpenetration could serve as a new strategy to construct complex supramolecular architectures from simple organic building blocks.
- Subjects
ISOMERISM; TRIPTYCENES; HYDROGEN bonding; CRYSTALLIZATION; POROSITY
- Publication
Angewandte Chemie, 2019, Vol 131, Issue 6, p1678
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201811263