Publications de Dongbin Zhao | EPFL Graph Search

DIII-D research towards establishing the scientific basis for future fusion reactors

Olivier Sauter, Wilfred Anthony Cooper, Lorenzo Anton-Louis Talà, Terunobu Akiyama, Mario Ludovico Podesta, Dongbin Zhao, Zhixian Yan, Jeffrey Huang, Xin Yang, Richard Pitts

DIII-D research is addressing critical challenges in preparation for ITER and the next generation of fusion devices through focusing on plasma physics fundamentals that underpin key fusion goals, understanding the interaction of disparate core and boundary ...

IOP Publishing Ltd2019

Palladium nanoparticles stabilized by an ionic polymer and ionic liquid: A versatile system for C-C cross-coupling reactions

Paul Joseph Dyson, Zhaofu Fei, Wee Han Ang, Dongbin Zhao, Yuehui Li, Xuemei Yang

Highly stable palladium nanoparticles 5 nm diam., protected by an imidazolium-based ionic polymer in a nitrile-functionalized ionic liq., have been prepd. and characterized by TEM. These Pd nanoparticles are excellent precatalysts for Suzuki, Heck, and Sti ...

2008

Fabrication of Dendritic Gold Nanoparticles by Use of an Ionic Polymer Template

Paul Joseph Dyson, Zhaofu Fei, Dongbin Zhao

A facile method for the fabrication of dendritic gold nanoparticles (NPs) by use of an ionic polymer template has been developed. In situ generation of an imidazolium-based (cationic) polymer, poly[1-methyl-3-(4-vinylbenzyl)imidazolium], with AuCl4- counte ...

2008

Aminophosphine complex as a catalyst precursor in Suzuki coupling reactions

Zhaofu Fei, Wee Han Ang, Dongbin Zhao

A palladium complex with an aminophosphine ligand has been prepared and investigated as a catalyst precursor in Suzuki coupling reactions in toluene. Nanoparticles composed of elemental palladium have been isolated from the reaction media and analyzed usin ...

2008

Design, synthesis and applications of functionalized ionic liquids

Dongbin Zhao

Room temperature ionic liquids (RTILs), considered as "designers' solvents", are attracting a great attention because of their possibility to be tailored based on property requirements. The ionic liquids designed and synthesized for carrying out specified ...

EPFL2007

Development of nitrile-functionalized ionic liquids for C-C coupling reactions: implication of carbene and nanoparticle catalysts

Paul Joseph Dyson, Rosario Scopelliti, Zhaofu Fei, Wee Han Ang, Dongbin Zhao, Cinzia Chiappe

A series of nitrile-functionalized imidazolium salts (many of which are liquid at room temperature) have been prepared. The reactivity of these salts with PdCl2 has been studied, resulting in salts containing a tetrachloropalladate dianion or co ...

2007

Synthesis, characterization and X-ray crystal structures of lithium coordination polymer from cyclobutane-1,1-dicarboxylic acid

Zhaofu Fei, Dongbin Zhao

A novel lithium salt, cyclobutane-1,1-dicarboxylic lithium was synthesized and characterized by NMR, IR, ESI-MS, X-ray single crystal analysis, and TG/DTG (TGA) thermal analysis. The crystal structure information reveals the coordination polymer nature and ...

2007

Thiocyanate functionalised ionic liquids: synthesis, characterisation and reactivity

Paul Joseph Dyson, Rosario Scopelliti, Zhaofu Fei, Wee Han Ang, Dongbin Zhao

The reaction of chloromethyl thiocyanate with 1-methylimidazole affords the imidazolium salt, 1-thiocyanomethyl-3-methylimidazolium chloride, [C1SCNmim]Cl (1a). Exchange of the chloride anion in 1a by [PF6] ...

2007

Revisiting Ether-Derivatized Imidazolium-Based Ionic Liquids

Paul Joseph Dyson, Rosario Scopelliti, Zhaofu Fei, Wee Han Ang, Dongbin Zhao

A series of ether-derivatized imidazolium halides have been prepd. and characterized. Contrary to literature reports, they are all cryst. solids and have m.ps. well above room temp. (50-100 °C). Single crystals of the imidazolium salts, obtained in situ by ...

2007

Palladium-Catalyzed Desulfitative Mizoroki-Heck Coupling Reactions of Sulfonyl Chlorides with Olefins in a Nitrile-functionalized Ionic Liquid

Paul Joseph Dyson, Pierre Vogel, Zhaofu Fei, Dongbin Zhao, Chandra Mouleeswara Rao Volla

Aryl and alkenyl sulfonyl chlorides can be used in Heck-Mizoroki-type couplings with mono- and disubstituted olefins in a nitrile-functionalized ionic liquid, viz. [C3CNpy][Tf2N]. Advantages over previously reported methods include: (1) use of a cheap cat ...

2006