Selective Gold Recovery and Catalysis in a Highly Flexible Methionine-Decorated Metal-Organic Framework

Journal article (2016)

Authors

Marta Mon Universitat de València
J. Ferrando Soria Universitat de València
Thais Grancha Universitat de València
Francisco R. Fortea-Pérez Universitat de València
Antonio Leyva-Pérez Universitat Politécnica de Valencia
Donatella Armentano University of Calabria
Emilio Pardo Universitat de València
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Published Date

2016

Language

English

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Abstract

A novel chiral 3D bioMOF exhibiting functional channels with thio-alkyl chains derived from the natural amino acid l-methionine (1) has been rationally prepared. The well-known strong affinity of gold for sulfur derivatives, together with the extremely high flexibility of the thioether "arms" decorating the channels, account for a selective capture of gold(III) and gold(I) salts in the presence of other metal cations typically found in electronic wastes. The X-ray single-crystal structures of the different gold adsorbates AuIII@1 and AuI@1 suggest that the selective metal capture occurs in a metal ion recognition process somehow mimicking what happens in biological systems and protein receptors. Both AuIII@1 and AuI@1 display high activity as heterogeneous catalyst for the hydroalkoxylation of alkynes, further expanding the application of these novel hybrid materials.