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

作者：Mon Marta; Ferrando Soria Jesus; Grancha Thais; Fortea Perez Francisco R; Gascon Jorge; Leyva Perez Antonio^*; Armentano Donatella^*; Pardo Emilio^*

来源：Journal of the American Chemical Society, 2016, 138(25): 7864-7867.

DOI：10.1021/jacs.6b04635

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.

• 出版日期2016-6-29