Referenced in: none

Automatically associated channels: Kir2.3

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

Authors: Marta Mon, Jesus Ferrando-Soria, Thais Grancha, Francisco R Fortea-Pérez, Jorge Gascon, Antonio Leyva-Perez, Donatella Armentano, Emilio Pardo

Journal, date & volume: J. Am. Chem. Soc., 2016 Jun 13 , ,

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/27295383

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 Au(III)@1 and Au(I)@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 Au(III)@1 and Au(I)@1 display high activity as heterogeneous catalyst for the hydroalkoxylation of alkynes, further expanding the application of these novel hybrid materials.