Bismesitoylphosphinic Acid (BAPO‐OH): A Ligand for Copper Complexes and Four‐Electron Photoreductant for the Preparation of Copper Nanomaterials |
| |
| Authors: | Andreas Beil Dr. Georgina Müller Debora Käser Dr. Bodo Hattendorf Dr. Zhongshu Li Dr. Frank Krumeich Dr. Amos Rosenthal Dr. Vijay Kumar Rana Dr. Hartmut Schönberg Dr. Zoltán Benkő Prof. Dr. Hansjörg Grützmacher |
| |
| Affiliation: | 1. http://www.gruetzmacher.ethz.ch 0000-0002-9928-0967 Laboratorium für Anorganische Chemie, ETH Zürich, Zürich, Switzerland;2. Laboratorium für Anorganische Chemie, ETH Zürich, Zürich, Switzerland;3. Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, China;4. Budapest University of Technology and Economics, Budapest, Hungary |
| |
| Abstract: | Bismesitoylphosphinic acid, (HO)PO(COMes)2 (BAPO‐OH), is an efficient photoinitiator for free‐radical polymerizations of olefins in aqueous phase. Described here are the structures of various copper(II) and copper(I) complexes with BAPO‐OH as the ligand. The complex CuII(BAPO‐O)2(H2O)2 is photoactive, and under irradiation with UV light in aqueous phase, it serves as a source of metallic copper in high purity and yield (>80 %). Simultaneously, the radical polymerization of acrylates can be initiated and allows the preparation of nanoparticle/polymer nanocomposites in which the metallic Cu nanoparticles are protected against oxidation. The determination of the stoichiometry of the photoreductions suggests an almost quantitative conversion from CuII into Cu0 with half an equivalent of BAPO‐OH, which serves as a four‐electron photoreductant. |
| |
| Keywords: | copper nanoparticles photochemistry polymerization structure elucidation |
|
|
