Recherche

Afficher tous les résultats pour

Accueil

Personne

Paul Joseph Dyson

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (669)

Selective removal of acetone and butan-1-ol from water with supported ionic liquid-polydimethylsiloxane membrane by pervaporation

Paul Joseph Dyson, Zhaofu Fei

The use of ionic liq.-polymer in supported ultrafiltration membrane in vacuum pervaporation has been verified. The ultrafiltration membranes were impregnated by two ionic liqs. (1-ethenyl-3-ethyl-imidazolium hexafluorophosphate and tetrapropylammonium tetr ...

2008

Elucidation of the interactions of an anticancer ruthenium complex in clinical trials with biomolecules utilizing capillary electrophoresis hyphenated to inductively coupled plasma-mass spectrometry

Paul Joseph Dyson, Christian Hartinger, Michael Groessl

The application of capillary electrophoresis (CE) combined with highly sensitive inductively-coupled-plasma mass spectrometric (ICP-MS) detection allows the interactions of metal complexes with biomols. to be characterized. This technique has been used to ...

2008

Influence of the diketonato ligand on the cytotoxicities of [Ru(.eta.6-p-cymene)(R2acac)(PTA)]+ complexes (PTA = 1,3,5-triaza-7-phosphaadamantane)

Rosario Scopelliti, Paul Joseph Dyson, Anna Katherine Renfrew

A series of compds. of general formula [Ru(.eta.6-p-cymene) (R2acac)(PTA)][X] (R2acac = Me2acac, tBu2acac, Ph2acac, Me2acac-Cl; PTA = 1,3,5-triaza-7-phosphaadamantane; X = BPh4, BF4), and the precursor to the Me2acac-Cl deriv. [Ru(.eta.6-p-cymene)(Me2acac- ...

2008

Emerging Protein Targets for Anticancer Metallodrugs: Inhibition of Thioredoxin Reductase and Cathepsin B by Antitumor Ruthenium(II)-Arene Compounds

Paul Joseph Dyson, Christian Hartinger, Angela Casini

A series of ruthenium(II)-arene (RAPTA) compds. were evaluated for their ability to inhibit thioredoxin reductase (either cytosolic or mitochondrial) and cathepsin B, two possible targets for anticancer metallodrugs. In general, inhibition of the thioredox ...

2008

Hydrolysis study of the bifunctional antitumor compound RAPTA-C, [Ru(η6-p-cymene)Cl2(pta)]

Paul Joseph Dyson, Claudine Scolaro, Christian Hartinger, Claire Samantha Allardyce

The hydrolysis of [Ru(η6-p-cymene)Cl2(PTA)] (PTA = 1,3,5-triaza-7-phosphatricyclo-[3.3.1.1]decanephosphine; RAPTA-C) was studied using UV-visible (UV-vis) spectrophotometry and NMR spectroscopy. In analogy to in silico studies, [Ru(η6-p-cymene)Cl(H2O)(PTA) ...

2008

Selective degradation of wood lignin over noble-metal catalysts in a two-step process

Paul Joseph Dyson, Ning Yan, Cheng Wang, Chenxu Zhao

Direct conversion of lignin into alkanes and methanol was carried out in a two-step process (hydrogenolysis and hydrogenation) involving initial treatment of white birch wood sawdust with H2 in dioxane/water/phosphoric acid using carbon supported Ru, Pd, R ...

2008

Gold(III) compounds as anticancer agents: Relevance of gold-protein interactions for their mechanism of action

Paul Joseph Dyson, Christian Hartinger, Angela Casini

Gold(III) compds. constitute an emerging class of biol. active substances, of special interest as potential anticancer agents. During the past decade a no. of structurally diverse gold(III) complexes were reported to be acceptably stable under physiol.-lik ...

2008

Biphasic Hydrogenation over PVP Stabilized Rh Nanoparticles in Hydroxyl Functionalized Ionic Liquids

Lioubov Kiwi, Gabor Laurenczy, Paul Joseph Dyson, Zhaofu Fei, Rocio Micaela Crespo Quesada, Ning Yan, Yuehui Li, Xuemei Yang

Polyvinylpyrrolidone stabilized rhodium nanoparticles are highly sol. in hydroxyl-functionalized ionic liqs., providing an effective and highly stable catalytic system. In hydrogenation reactions, excellent results were obtained, and transmission electron ...

2008

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

Pd Nanoparticles in a Supported Ionic Liquid Phase: Highly Stable Catalysts for Selective Acetylene Hydrogenation under Continuous-Flow Conditions

Lioubov Kiwi, Gabor Laurenczy, Marina Ruta, Paul Joseph Dyson

Monodispersed Pd nanoparticles of 5 and 10 nm were obtained via reduction of Pd(acac)2 dissolved in ionic liquid (IL), [bmim][PF6], or [bmimOH][TF2N], supported on carbon nanofibers (CNF) anchored to sintered metal fibers (SMF). Using [bmimOH][TF2N], the m ...

2008

A viable hydrogen-storage system based on selective formic acid decomposition with a ruthenium catalyst

Gabor Laurenczy, Céline Fellay, Paul Joseph Dyson

The use of formic acid as a hydrogen-storage material has become more feasible thanks to the development of a homogeneous catalytic system of ruthenium water-soluble complexes (Ru/TPPTS; TPPTS=meta-trisulfonated triphenylphosphine) that selectively decompo ...

Wiley-VCH Verlag GmbH2008

Fabrication of gold nano- and microstructures in ionic liquids - A remarkable anion effect

Paul Joseph Dyson, Zhaofu Fei

Au nano- and microstructures such as polyhedral crystals, large single-cryst. nanoplates, hollow trapeziform crystals, holey polyhedra, and dendrites were produced via microwave heating of HAuCl4·4H2O in a variety of ionic liqs. (ILs) in the absence of cap ...

2008

Water-soluble arene ruthenium complexes containing pyridinethiolato ligands: Synthesis, molecular structure, redox properties and anticancer activity of the cations [(η6-arene)Ru(p-SC5H4NH)3]2+

Paul Joseph Dyson, Anna Katherine Renfrew

The cationic complexes [(η6-arene)Ru(SC5H4NH)3]2+, arene being C6H6 (1), MeC6H5 (2), p-iPrC6H4Me (3) or C6Me6 (4), have been synthesized from the reaction of 4-pyridinethiol with the corresponding precursor (η6-arene)2Ru2(μ2-Cl)2Cl2 and isolated as the chl ...

2008

Stability of an organometallic ruthenium-ubiquitin adduct in the presence of glutathione: Relevance to antitumor activity

Paul Joseph Dyson, Céline Rita Duhot, Yury Tsybin, Christian Hartinger, Angela Casini

The interactions of the ruthenium(II) complex Ru(η6-p-cymene)(pta)Cl2 (RAPTA-C), an effective anticancer and antimetastatic agent, with biol. nucleophiles are important with respect to its mechanism of action, for example, the reaction with glutathione (GS ...

2008

Effect of Lewis acids on the Diels-Alder reaction in ionic liquids with different activation modes

Paul Joseph Dyson, Ana Vidis

The Diels-Alder reaction has been examd. in room temp. ionic liqs. with high molar concns. of Lewis acids under various conditions. A molar ratio of 10% catalyst gave a large increase in the selectivity and the yield of the reaction. The effect of catalyst ...

2008

Studies on the reactivity of organometallic Ru-, Rh- and Os-pta complexes with DNA model compounds

Rosario Scopelliti, Paul Joseph Dyson, Antoine Dorcier, Christian Hartinger

The reactions of arene-metal complexes (arene = p-cymene, benzene or pentamethylcyclopentadienyl, metal = Ru, Rh or Os), including 1,3,5-triaza-7-phosphatricyclo-[3.3.1.1]decanephosphine (pta) and chloro co-ligands, with 9-methylguanine, adenine, and a ser ...

2008

KP1019, a new redox-active anticancer agent - preclinical development and results of a clinical phase I study in tumor patients

Paul Joseph Dyson, Christian Hartinger, Michael Groessl

A review. The promising drug candidate indazolium trans-[tetrachlorobis(1H-indazole)ruthenate(III)] (KP1019) is the second Ru-based anticancer agent to enter clin. trials. In this review, which is an update of a paper from 2006, the exptl. evidence for the ...

2008

Determination of the viscosity of the ionic liquids [bmim][PF6] and [bmim][TF2N] under high CO2 gas pressure using sapphire NMR tubes

Gabor Laurenczy, Paul Joseph Dyson

The viscosities of the ionic liqs. [bmim][PF6] and [bmim][TF2N] (bmim = 1-methyl-3-butylimidazolium, TF2N = bis(trifluoromethylsulfonyl)imide) have been detd. under CO2 pressure at 298 K. The viscosity decreases from 381 to 23 cP for [bmim][PF6] without CO ...

2008

Reactivity and Catalytic Activity of a Robust Ruthenium(II)-Triphos Complex

Paul Joseph Dyson

The ruthenium(II)-triphos acetato complex [RuCl(OAc)(k3-triphos)] (triphos = (PPh2CH2)3CMe) has been found to be an active catalyst precursor for the hydrogenation of 1-alkenes under relatively mild conditions (5-50 bar H2, 50 °C). In contrast to related t ...

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

Page 29 sur 34