Chromium(II) Metal–Organic Polyhedra as Highly Porous Materials
[1];
[3]
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
- Department of Chemistry, Texas A&,M University, College Station, Texas 77842-3012, United States
- Department of Chemistry, Texas A&,M University, College Station, Texas 77842-3012, United States; Department of Materials Science and Engineering, Texas A&,M University, College Station, Texas 77840, United States
Herein we report for the first time the synthesis of Cr(II)-based metal–organic polyhedra (MOPs) and the characterization of their porosities. Unlike the isostructural Cu(II)- or Mo(II)-based MOPs, Cr(II)-based MOPs show unusually high gas uptakes and surface areas. The combination of comparatively robust dichromium paddlewheel units (Cr2 units), cage symmetries, and packing motifs enable these materials to achieve Brunauer–Emmett–Teller surface areas of up to 1000 m2/g. Reducing the aggregation of the Cr(II)-based MOPs upon activation makes their pores more accessible than their Cu(II) or Mo(II) counterparts. Further comparisons of surface areas on a molar (m2/mol cage) rather than gravimetric (m2/g) basis is proposed as a rational method of comparing members of a family of related molecular materials.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Energy Frontier Research Centers (EFRC) (United States). Center for Gas Separations Relevant to Clean Energy Technologies (CGS)
- Sponsoring Organization:
- DOE - OTHERFOREIGN
- OSTI ID:
- 1379427
- Journal Information:
- ACS Applied Materials and Interfaces, Vol. 9, Issue 33; ISSN 1944-8244
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- ENGLISH
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