Issue Date: September 17, 2007
Big Holey Metal-organic Frameworks
In the menagerie of porous materials, examples of metal-organic frameworks typically have been limited to those in the microporous range-with minute pores of 3 nm in diameter or less. Introducing larger cavities into these compounds tends to destabilize the complex coordination between the metal ions and their ligands. Now, chemists in South Korea have managed to expand metal-organic lattices into the mesoporous range, creating a framework of fused cages with pores measuring 3.9 and 4.7 . . .
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