| Autor: |
Mohideen MI; EaStCHEM School of Chemistry, University of St Andrews, St Andrews KY169ST, UK., Xiao B, Wheatley PS, McKinlay AC, Li Y, Slawin AM, Aldous DW, Cessford NF, Düren T, Zhao X, Gill R, Thomas KM, Griffin JM, Ashbrook SE, Morris RE |
| Jazyk: |
angličtina |
| Zdroj: |
Nature chemistry [Nat Chem] 2011 Apr; Vol. 3 (4), pp. 304-10. Date of Electronic Publication: 2011 Mar 06. |
| DOI: |
10.1038/nchem.1003 |
| Abstrakt: |
Formed by linking metals or metal clusters through organic linkers, metal-organic frameworks are a class of solids with structural and chemical properties that mark them out as candidates for many emerging gas storage, separation, catalysis and biomedical applications. Important features of these materials include their high porosity and their flexibility in response to chemical or physical stimuli. Here, a copper-based metal-organic framework has been prepared in which the starting linker (benzene-1,3,5-tricarboxylic acid) undergoes selective monoesterification during synthesis to produce a solid with two different channel systems, lined by hydrophilic and hydrophobic surfaces, respectively. The material reacts differently to gases or vapours of dissimilar chemistry, some stimulating subtle framework flexibility or showing kinetic adsorption effects. Adsorption can be switched between the two channels by judicious choice of the conditions. The monoesterified linker is recoverable in quantitative yield, demonstrating possible uses of metal-organic frameworks in molecular synthetic chemistry as 'protecting groups' to accomplish selective transformations that are difficult using standard chemistry techniques. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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