Preparation of Pd-PS, Pd-PSB and Pd-PSC nanoparticles by γ-irradiation and their catalytic efficiency in Sonogashira coupling reaction

• Published in: Colloids and surfaces. A, Physicochemical and engineering aspects Vol. 313-314; pp. 224 - 229
• Main Authors: Ryu, Seok-Gn, Kim, Se-Wook, Oh, Seong-Dae, Choi, Seong-Ho, Park, Hyun Gyu, Zhang, Yu Ping
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2008; Elsevier
• Subjects: Catalysis; Catalysts; Chemistry; Colloidal state and disperse state; Emulsifier-free emulsion polymerization; Exact sciences and technology; General and physical chemistry; Nanoparticles; Nanoparticles ;γ-Irradiation; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Poly(styrene-co-4-vinylbenzoic acid); Poly(styrene-co-4-vinylphenylboronic acid); PSB; PSC; Sonogashira reaction; Surface physical chemistry; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Nanoparticles; PSC; Emulsifier-free emulsion polymerization; Catalysts; Poly(styrene-co-4-vinylphenylboronic acid); Poly(styrene-co-4-vinylbenzoic acid); Nanoparticles ;γ-Irradiation; Sonogashira reaction; PSB; Catalytic reaction; Hydrocarbon; Nanoparticle; Emulsifier; Acids; Emulsion polymerization; Efficiency; Nanoparticles γ-Irradiation; Preparation; Styrene; Benzenic compound; Catalyst; Nanotechnology
• ISSN: 0927-7757; 1873-4359
• DOI: 10.1016/j.colsurfa.2007.05.041

The poly(styrene), PS, of 450nm diameter, poly(styrene-co-4-vinylphenylboronic acid), PSB, nanoparticles of 220–400nm diameter, and poly(styrene-co-4-vinylbenzoic acid), PSC, nanoparticles of 240–305nm were prepared by emulsifier-free emulsion polymerization. The surface of PS, PSB, and PSC nanoparticles were loaded with Pd nanoparticles by reduction of Pd ions using γ-irradiation in order to apply catalyst in Sonogashira coupling reaction. The Pd-PS, Pd-PSB and Pd-PSC were characterized by High-Resolution Transmittance Electron Microscopy (HR-TEM), Field-Emission Scanning Electron Microscopy (FE-SEM), and Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES), respectively. The HR-TEM, XRD and ICP-AES data show that the Pd nanoparticles were loaded on the surface of PS, PSB, and PSC nanoparticles, respectively. Catalytic efficiency of the Pd-PS, Pd-PSB and Pd-PSC nanoparticles was tested in Sonogashira coupling reaction. The catalytic efficiency of the Pd-PS, Pd-PSB, and Pd-PSC nanoparticles was increased with increasing Pd nanoparticle contents.