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Metal–organic frameworks: a new class of porous materials
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Abstract A review of the synthesis, structure, and properties of metal–organic frame works (MOFs) is presented, highlighting the important advances in their research over the past decade. This new class of porous materials is attracting attention due to dem- onstrations of their large pore sizes, high apparent surface areas, selective uptake of small molecules, andoptical or magnetic responses to the inclusion of guests. More importantly, their synthesis from molecular building blocks holds the potential for directed tailoring of these properties. 1. Introduction Traditionally, solids with outstanding properties such as high porosity have been produced by discovery-based synthetic chemistry. A logical and seemingly simple way to circumvent combinatorial searching for novel mate-rials is to link together molecular building blocks exhibiting the desired property. To produce a robust porous material one couldenvision constructing the equivalent of a ‘‘molecular scaffold’’ by connecting rigidrod-like organic moieties with inflexible inorganic clusters that act as joints. The size, andmore importantly the chemical environment of the resulting void spaces are defined by the length and functionalities of the organic units. Accordingly, tailoring of the material’sproperties wouldbe realizedby the appropriate choice of starting materials. Employment of this strategy has yielded materials that not only exhibit selective adsorption of small molecules [1], but also inclusion of large molecules such as C60 [2]. Their construction has also highlightedanother important consideration: it is not only the building blocks that are important, but the way in which they are connected. By studying how the building units reticulate (form a network), principles have been established that provide materials designers with a level of predictive capability [3]. |
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4楼2013-04-26 19:17:10
2楼2013-04-21 11:57:10
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and optical or magnetic responses to the inclusion of guests. More importantly, their synthesis from molecular building blocks holds the potential for directed tailoring of these properties. A logical and seemingly simple way to circumvent combinatorial searching for novel mate-rials is to link together molecular building blocks exhibiting the desired property. 金币比较少，就帮我翻译这两句就行嘞 |
3楼2013-04-21 12:08:22
