A Permanent Mesoporous Organic Cage with an Exceptionally High Surface Area
- 8 January 2014
- journal article
- research article
- Published by Wiley in Angewandte Chemie-International Edition
- Vol. 53 (6), 1516-1520
- https://doi.org/10.1002/anie.201308924
Abstract
Recently, porous organic cage crystals have become a real alternative to extended framework materials with high specific surface areas in the desolvated state. Although major progress in this area has been made, the resulting porous compounds are restricted to the microporous regime, owing to the relatively small molecular sizes of the cages, or the collapse of larger structures upon desolvation. Herein, we present the synthesis of a shape-persistent cage compound by the reversible formation of 24 boronic ester units of 12 triptycene tetraol molecules and 8 triboronic acid molecules. The cage compound bears a cavity of a minimum inner diameter of 2.6 nm and a maximum inner diameter of 3.1 nm, as determined by single-crystal X-ray analysis. The porous molecular crystals could be activated for gas sorption by removing enclathrated solvent molecules, resulting in a mesoporous material with a very high specific surface area of 3758 m2 g−1 and a pore diameter of 2.3 nm, as measured by nitrogen gas sorption.Keywords
This publication has 54 references indexed in Scilit:
- Self-assembly of a covalent organic cage with exceptionally large and symmetrical interior cavity: the role of entropy of symmetryChemical Communications, 2013
- Design Strategies for Shape-Persistent Covalent Organic Polyhedrons (COPs) through Imine Condensation/MetathesisThe Journal of Organic Chemistry, 2012
- Rational Construction of an Extrinsic Porous Molecular Crystal with an Extraordinary High Specific Surface AreaAngewandte Chemie-International Edition, 2012
- Rationale Herstellung eines extrinsisch porösen Molekülkristalls mit einer außergewöhnlich großen spezifischen OberflächeAngewandte Chemie, 2012
- Giant regular polyhedra from calixarene carboxylates and uranylNature Communications, 2012
- Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional EnsemblesChemical Reviews, 2011
- Highly CO2-Selective Organic Molecular Cages: What Determines the CO2 SelectivityJournal of the American Chemical Society, 2011
- OLEX2: a complete structure solution, refinement and analysis programJournal of Applied Crystallography, 2009
- Structure validation in chemical crystallographyActa Crystallographica Section D-Biological Crystallography, 2009
- A short history of SHELXActa Crystallographica Section A Foundations of Crystallography, 2007