Publications by Dongbin Zhao | EPFL Graph Search

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

Wilfred Anthony Cooper, Richard Pitts, Olivier Sauter, Stefan Müller, Mario Ludovico Podesta, Francesca Maria Poli, Dongbin Zhao, Gang Yu, Huan Du, Alessandro Bortolon, Alessandro Marinoni, Jeffrey Huang, Sun Hee Kim, Jérôme Guterl, Zhixian Yan, Fang Liu, Terunobu Akiyama, Xin Yang, Wei Wu, Lorenzo Anton-Louis Talà, Federico David Halpern, Gabriele Merlo, Yu Fu, Shouguo Wang, Sung Chul Park, Xi Chen, Tzu-Hsien Shen, Bingying Zhao, Kyungjin Kim, Ji Hyun Kim, Yi Wang, Hui Wang, Zheng Wang

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, Dongbin Zhao, Zhaofu Fei, Wee Han Ang, 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, Dongbin Zhao, Zhaofu Fei

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

Dongbin Zhao, Zhaofu Fei, Wee Han Ang

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

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

Dongbin Zhao, Zhaofu Fei

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

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

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

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

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

Pierre Vogel, Paul Joseph Dyson, Dongbin Zhao, Zhaofu Fei, 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

Applications of functionalized ionic liquids

Dongbin Zhao, Zhaofu Fei, Xuan Li

Recent developments of the synthesis and applications of functionalized ionic liqs. (including dual-functionalized ionic liqs.) have been highlighted in this review. Ionic liqs. are attracting attention as alternative solvents in green chem., but as more f ...

2006

A strategy for the synthesis of transition-metal nanoparticles and their transfer between liquid phases

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

Nanoparticles can be stabilized by an ionic liq. polymer (ILP) composed of imidazolium units incorporating a hydrophobic benzyl group. The resulting gold, platinum, and palladium nanoparticles can be efficiently transferred from water to ionic liqs. by exc ...

2006

Remarkable Anion and Cation Effects on Stille Reactions in Functionalised Ionic Liquids

Paul Joseph Dyson, Dongbin Zhao, Zhaofu Fei, Cinzia Chiappe

Task-specific ionic liquids bearing nitrile functional groups attached to the cation and nitrogen-donor-containing anions strongly affect the efficiency of the Stille cross-coupling, influencing the nature of the catalyst and its stability. The relative st ...

Wiley2006

Complexation associated rearrangement of iminobiphosphines to diphosphinoamines

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

The reaction of the iminobiphosphines RN[dbnd]>PPh2-PPh2, where R = C6H4(p-CN), C6H4(m-CN), C6H4(o-C6H5), C6F5 or C6

2006

A Supercooled Imidazolium Iodide Ionic Liquid as a Low-Viscosity Electrolyte for Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Paul Joseph Dyson, Dongbin Zhao, Zhaofu Fei, Wee Han Ang

A series of allyl-functionalized imidazolium salts are reported, including 1-allyl-3-ethylimidazolium iodide and 1-allyl-3-propylimidazolium iodide, which have m.ps. close to room temp. and show typical properties of supercooled fluids if heated above thei ...

2006

Influence of Ionic Liquids Bearing Functional Groups in Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Paul Joseph Dyson, Dongbin Zhao, Zhaofu Fei

Ionic liquids containing the nitrile and vinyl functional groups attached to imidazolium cations combined with various anions, e.g., iodide, bis[(trifluoromethyl)sulfonyl]imide ([TFSI]-), or dicyanamide ([N(CN)2]-), have been prepared and characterized. Th ...

2006

Biphasic Hydrosilylation in Ionic Liquids: A Process Set for Industrial Implementation

Gabor Laurenczy, Paul Joseph Dyson, Dongbin Zhao

The biphasic hydrosilylation of 1-hexadecene with siloxane B9800 in a range of ionic liqs. is reported. Of the ionic liqs. tested, [C4py][BF4] and [C4-3-pic][BF4] offer the optimum compromise between activity and ...

2006

From dysfunction to bis-function: on the design and applications of functionalised ionic liquids

Paul Joseph Dyson, Dongbin Zhao, Zhaofu Fei

Some of the recent developments concerning the synthesis, properties and applications of functionalised ionic liqs. are highlighted. Various strategies are presented, including functionalisation of the cation, anion or both cation and anion in the same ion ...

2006

Ionic liquids based on imidazolium salts incorporating a nitrile functionality

Paul Joseph Dyson, Dongbin Zhao, Zhaofu Fei

Novel chemical compounds of the general formula KA, in which K is a 5- or 6- membered heterocyclic ring having 1-3 hetereo atoms, which can be independently N, S, or 0 with the proviso that at least one of the hetereo atoms must be a quaternized n ...

2005

A nearly planar water sheet sandwiched between strontium-imidazolium carboxylate coordination polymers

Rosario Scopelliti, Paul Joseph Dyson, Dongbin Zhao, Zhaofu Fei

The crystal structure of a strontium-imidazolium polymeric material obtained from the reaction of zwitterionic 1,3-bis(carboxymethyl)-imidazolium with SrCO3 (2:1) in water is reported. The compound crystallized in the orthorhombic space group Pcc2 with a = ...

2005