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Interwoven Metal-Organic Framework on a Periodic Minimal Surface with Extra-Large Pores
Banglin Chen,1M. Eddaoudi,1S. T. Hyde,2M. O'Keeffe,3O. M. Yaghi1*
Interpenetration (catenation) has long been considered a major
impediment in the achievement of stable and porous crystallinestructures. A strategy for the design of highly porous and structurallystable networks makes use of metal-organic building blocks thatcan be
assembled on a triply periodic P-minimal geometric
surfaceto produce structures that are interpenetrating--more
accuratelyconsidered as interwoven. We used
4,4',4"-benzene-1,3,5-triyl-tribenzoicacid (H3BTB),
copper(II) nitrate, and N,N'-dimethylformamide
(DMF)to prepare
Cu3(BTB)2(H2O)3·(DMF)9(H2O)2
(MOF-14), whose structurereveals a pair of interwoven metal-organic
frameworks that aremutually reinforced. The structure contains
remarkably large pores,16.4 angstroms in diameter, in which voluminous
amounts of gasesand organic solvents can be reversibly sorbed.
1 Department of Chemistry,
University of Michigan, Ann Arbor, MI 48109, USA.
2 Department of Applied Mathematics, Australian
National University, Canberra, Australia.
3 Department of Chemistry, Arizona State University,
Tempe, AZ 85287, USA.
*
To whom correspondence should be addressed. E-mail:
oyaghi{at}umich.edu
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