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Title: Interpenetration Isomerism in Triptycene‐Based Hydrogen‐Bonded Organic Frameworks

Journal Article · · Angewandte Chemie
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [4]
  1. Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
  2. Neutron Scattering Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
  3. School of Science Westlake University 18 Shilongshan Road Hangzhou 310024 China
  4. Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA, Institute for Molecular Design and Synthesis Tianjin University 92 Weijin Road Tianjin 300072 China, School of Chemistry University of New South Wales Sydney NSW 2052 Australia

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 H 6 PET, 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 m 2  g −1 . Synthetic control over the framework interpenetration could serve as a new strategy to construct complex supramolecular architectures from simple organic building blocks.

Sponsoring Organization:
USDOE
OSTI ID:
1579761
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 131 Journal Issue: 6; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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