Co-reporter:Atsushi Ohtaka, Takuto Teratani, Ryohei Fujii, Kanako Ikeshita, Takahiro Kawashima, Koichi Tatsumi, Osamu Shimomura, and Ryôki Nomura
The Journal of Organic Chemistry 2011 Volume 76(Issue 10) pp:4052-4060
Publication Date(Web):April 11, 2011
DOI:10.1021/jo200485q
Linear polystyrene-stabilized PdO nanoparticles (PS-PdONPs) were prepared in water by thermal decomposition of Pd(OAc)2 in the presence of polystyrene. The immobilization degree of palladium was dependent on the molecular weight of polystyrene, while the size of the Pd nanoparticles was not. Linear polystyrene-stabilized Pd nanoparticles (PS-PdNPs) were also prepared using NaBH4 and phenylboronic acid as reductants. The catalytic activity of PS-PdONPs was slightly higher than that of PS-PdNPs for Suzuki coupling reaction in water. PS-PdONPs exhibited high catalytic activity for Suzuki and copper-free Sonogashira coupling reactions in water and recycled without loss of activity.
Co-reporter:Atsushi Ohtaka, Takuto Teratani, Ryohei Fujii, Kanako Ikeshita, Osamu Shimomura and Ryôki Nomura
Chemical Communications 2009 (Issue 46) pp:7188-7190
Publication Date(Web):15 Oct 2009
DOI:10.1039/B915039K
Palladium nanoparticles can be readily stabilized onto linear polystyrene by a simple procedure. The resultant polystyrene-stabilized Pd has high catalytic activity for Suzuki–Miyaura cross-coupling reaction in water and can be reused without loss of activity.
Co-reporter:Ryôki Nomura, Haruo Matsuda, Takashi Miyai, Akio Baba
Thin Solid Films 1999 Volume 342(1–2) pp:108-112
Publication Date(Web):26 March 1999
DOI:10.1016/S0040-6090(98)01445-X
Binuclear complex Et2In(S2CNEt2)·ZnEt(S2CNEt2) was prepared by the reaction of indium triethyl (InEt3) with zinc bis(diethyldithiocarbamate) (Zn(S2CNEt2)2). This complex was an excellent single-source precursor for low-pressure MOCVD growth of spinel ZnIn2S4 thin layers. Optimal growth conditions for strongly 〈111〉 oriented spinel ZnIn2S4 thin film were as follows: substrate temperature Tsub, 400°C; source temperature Tso, 60°C; carrier gas N2; carrier flow rate Rflow (total pressure 1.3 kPa), 0.3 l/min. The spinel ZnIn2S4 thin film grown on an Si(111) substrate showed an n-type conduction nature and excellent semiconductor properties, such as optical bandgap energy (Eg)opt, 2.72 eV, mobility μ, 25.4 cm2/Vs, and carrier concentration N, 3.7×1016 cm−3.
Co-reporter:Atsushi Ohtaka, Takuto Teratani, Ryohei Fujii, Kanako Ikeshita, Osamu Shimomura and Ryôki Nomura
Chemical Communications 2009(Issue 46) pp:NaN7190-7190
Publication Date(Web):2009/10/15
DOI:10.1039/B915039K
Palladium nanoparticles can be readily stabilized onto linear polystyrene by a simple procedure. The resultant polystyrene-stabilized Pd has high catalytic activity for Suzuki–Miyaura cross-coupling reaction in water and can be reused without loss of activity.