2026-04-14T02:19:18Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/3057402026-01-15T14:12:34Zcom_2072_300912com_2072_4427col_2072_301309

00925njm 22002777a 4500 dc Izzet, Guillaume author Abécassis, Benjamin author Brouri, Dalil author Piot, Madeleine author Matt, Benjamin author Serapian, Stefano Artin author Bo, Carles author Proust, Anna author 2016 <p> The metal-driven self-assembly processes of a covalent polyoxometalate (POM)-based hybrid bearing remote terpyridine binding sites have been investigated. In a strongly dissociating solvent, a discrete metallomacrocycle, described as a molecular triangle, is formed and characterized by 2D diffusion NMR spectroscopy (DOSY), small-angle X-ray scattering (SAXS) and molecular modeling. In a less dissociating solvent, the primary supramolecular structure, combining negatively charged POMs and cationic metal linkers, further self-assemble through intermolecular electrostatic interactions in a reversible process. The resulting hierarchical assemblies are dense monodisperse nanoparticles composed of <em>ca.</em> 50 POMs that were characterized by SAXS and High-Resolution Transmission Electron Microscopy (HR-TEM). This multi-scale organized system directed by metal coordination and electrostatic interactions constitutes a promising step for the future design of POM self-assemblies with controllable structure-directing factors.</p> http://hdl.handle.net/2072/305740 https://doi.org/10.1021/jacs.6b00972 Hierarchical Self-Assembly of Polyoxometalate-Based Hybrids Driven by Metal Coordination and Electrostatic Interactions: From Discrete Supramolecular