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Bismesitoylphosphinic Acid (BAPO‐OH): A Ligand for Copper Complexes and Four‐Electron Photoreductant for the Preparation of Copper Nanomaterials
Author(s) -
Beil Andreas,
Müller Georgina,
Käser Debora,
Hattendorf Bodo,
Li Zhongshu,
Krumeich Frank,
Rosenthal Amos,
Rana Vijay Kumar,
Schönberg Hartmut,
Benkő Zoltán,
Grützmacher Hansjörg
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201800456
Subject(s) - copper , nanomaterials , photoinitiator , aqueous solution , nanoparticle , polymerization , materials science , metal , stoichiometry , nanocomposite , ligand (biochemistry) , radical polymerization , polymer chemistry , nuclear chemistry , chemistry , polymer , nanotechnology , organic chemistry , metallurgy , composite material , monomer , biochemistry , receptor
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 Cu II (BAPO‐O) 2 (H 2 O) 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 Cu II into Cu 0 with half an equivalent of BAPO‐OH, which serves as a four‐electron photoreductant.