Format

Send to

Choose Destination
Chem Sci. 2015 Jul 1;6(7):4049-4053. doi: 10.1039/c5sc00894h. Epub 2015 May 6.

Mesoporous 2D covalent organic frameworks based on shape-persistent arylene-ethynylene macrocycles.

Author information

1
Department of Chemistry and Biochemistry , University of Colorado Boulder , CO 80309 , USA . Email: wei.zhang@colorado.edu.
2
Storagenergy Technologies, Inc. , Salt Lake City , UT 84120 , USA.

Abstract

Macrocycle-to-framework strategy was explored to prepare covalent organic frameworks (COFs) using shape-persistent macrocycles as multitopic building blocks. We demonstrate well-ordered mesoporous 2D COFs (AEM-COF-1 and AEM-COF-2) can be constructed from tritopic arylene-ethynylene macrocycles, which determine the topology and modulate the porosity of the materials. According to PXRD analysis and computer modelling study, these COFs adopt the fully eclipsed AA stacking mode with large accessible pore sizes of 34 or 39 Å, which are in good agreement with the values calculated by NLDFT modelling of gas adsorption isotherms. The pore size of COFs can be effectively expanded by using larger size of the macrocycles. Provided a plethora of polygonal shape-persistent macrocycles with various size, shape and internal cavity, macrocycle-to-framework strategy opens up a promising approach to expand the structural diversity of COFs and build hierarchical pore structures within the framework.

Supplemental Content

Full text links

Icon for Royal Society of Chemistry Icon for PubMed Central
Loading ...
Support Center