A Tris(triphenylphosphine)ruthenium(II) Complex as a UV Photoinitiator for Free-Radical Polymerization and in Situ Silver Nanoparticle Formation in Cationic Films
作者： Davy-Louis Versace , Javier Cerezo Bastida , Cédric Lorenzini , Christine Cachet-Vivier , Estelle Renard
DOI: 10.1021/MA4019872
关键词:
摘要: The characterization and the photochemical investigation of a RuII complex (Ru(PPh3)3Cl2) having phosphine ligands are reported. DFT calculations ESR spin trapping experiments revealed for first time that photodecomposition is governed by homolytic cleavage P–(C6H5) bond generating phenyl radicals Ph• which able to initiate free radical polymerization acrylate monomers. addition H-donor HD plays key role in cationic photopolymerization epoxides: (i) reaction efficiency enhanced using [Ru(PPh3)3Cl2]/HD (ii) situ formation Ag nanoparticles observed presence Ru(PPh3)3Cl2/HD/AgSbF6 according following reactions: Ph•/DH hydrogen abstraction yielding D• oxidation silver salt.
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