Protecting group and switchable pore-discriminating adsorption properties of a hydrophilic-hydrophobic metal-organic framework

Mohideen, M. Infas H. and Xiao, Bo and Wheatley, Paul S. and McKinlay, Alistair C. and Li, Yang and Slawin, Alexandra M. Z. and Aldous, David W. and Cessford, Naomi F. and Dueren, Tina and Zhao, Xuebo and Gill, Rachel and Thomas, K. Mark and Griffin, John M. and Ashbrook, Sharon E. and Morris, Russell E. (2011) Protecting group and switchable pore-discriminating adsorption properties of a hydrophilic-hydrophobic metal-organic framework. Nature Chemistry, 3 (4). pp. 304-310. ISSN 1755-4330

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Nature Chemistry
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600
Subjects:
ID Code:
75716
Deposited By:
Deposited On:
21 Oct 2015 04:58
Refereed?:
Yes
Published?:
Published
Last Modified:
30 Sep 2020 06:12