Cover Picture: New Synthesis of Gold‐ and Silver‐Based Nano‐Tetracycline Composites (ChemistryOpen 3/2016)

The Front Cover picture shows new silver (Ag) and gold (Au) nanoparticle‐based tetracycline (TC) nanocomposites (AuNPs@TC and AgNPs@TC). A new synthetic methodology for the preparation of water‐soluble Au and Ag nanoparticles, using the antibiotic TC as co‐reducing and stabilizing agent, is reported. Both colloids exhibit high water stability, with an average size of 15±5 and 25±10 nm, respectively. Both composites are tested against TC‐resistant bacteria, presenting an increasing antibacterial effect in the case of AgNPs@TC. Moreover, the sensing towards metal ions is also explored by using AuNPs@TC, which is selective and reversible for aluminum(III) in water. More information can be found in the Full Paper by C. Lodeiro, J. Fernández‐Lodeiro, and co‐workers on page 206 in Issue 3, 2016 (DOI: 10.1002/open.201600016).[Image: see text]