title: Direct transformation into silver nanoparticles via thermal decomposition of oxalate-bridging silver oleylamine complexes.
abstract: Silver(I) oxalate, Ag2(C2O4), reacts with two equivalents of oleylamine (Ag:oleylamine = 1:1 mole/mole) to form an oxalate-bridged silver-oleylamine complex, [(oleylamine)Ag(micro-C2O4)Ag(oleylamine)]. The precursor complex is thermally decomposed at approximately 150 degrees C with CO2 evolution to produce Ag nanoparticles with approximately 11 nm dimension. The Ag nanoparticles contain approximately 12 wt% of oleylamines as the surface stabilizer. In the synthetic mechanism, the oxalate ligand acts as a two-electron reducing agent. The precursor complex is directly transformed into oleylamine-stabilized Ag nanoparticles in high yields of more than 80% without any additional synthetic organic solvents and reducing agents.
authors.affiliation: Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan.
authors.forename: Mitsunori
authors.initials: M
authors.lastname: Itoh
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Kakuta
authors.forename: Minami
authors.initials: M
authors.lastname: Nagaok
authors.forename: Yumiko
authors.initials: Y
authors.lastname: Koyama
authors.forename: Masatomi
authors.initials: M
authors.lastname: Sakamoto
authors.forename: Shuji
authors.initials: S
authors.lastname: Kawasaki
authors.forename: Naoki
authors.initials: N
authors.lastname: Umeda
authors.forename: Masato
authors.initials: M
authors.lastname: Kurihara