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Science 9 February 2001:
Vol. 291. no. 5506, pp. 1021 - 1023
DOI: 10.1126/science.1056598
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Reports

Interwoven Metal-Organic Framework on a Periodic Minimal Surface with Extra-Large Pores

Banglin Chen,1 M. Eddaoudi,1 S. T. Hyde,2 M. O'Keeffe,3 O. M. Yaghi1*

Interpenetration (catenation) has long been considered a major impediment in the achievement of stable and porous crystalline structures. A strategy for the design of highly porous and structurally stable networks makes use of metal-organic building blocks that can be assembled on a triply periodic P-minimal geometric surface to produce structures that are interpenetrating--more accurately considered as interwoven. We used 4,4',4"-benzene-1,3,5-triyl-tribenzoic acid (H3BTB), copper(II) nitrate, and N,N'-dimethylformamide (DMF) to prepare Cu3(BTB)2(H2O)3·(DMF)9(H2O)2 (MOF-14), whose structure reveals a pair of interwoven metal-organic frameworks that are mutually reinforced. The structure contains remarkably large pores, 16.4 angstroms in diameter, in which voluminous amounts of gases and 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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