Concept

Self-ionization of water

Publications associées (104)

Picosecond time-resolved X-ray Absorption Spectroscopy of solvated organometallic complexes

Majed Chergui, Wojciech Gawelda, Melanie Saes

We describe an experimental setup, which measures transient chemical changes of photoexcited solutes in disordered systems via time-resolved X-ray Absorption Spectroscopy (XAS) with picosecond temporal resolution. The setup combines a femtosecond amplified ...

2005

Bronsted acidic ionic liquids and their zwitterions: Synthesis, characterization and pK(a) determination

Paul Joseph Dyson, Zhaofu Fei, Dongbin Zhao

Imidazolium chlorides with one or two carboxylic acid substituent groups, 1-methyl-3-alkylcarboxylic acid imidazolium chloride, [Me{(CH2)(n)COOH}im]Cl (n=l, 3), and 1,3-dialkylcarboxylic acid imidazolium chloride, [{(CH2)(n)COOH}(2)im]Cl (n=1, 3), have bee ...

2004

Determination of hydrogen concentration in ionic liquids and the effect (or lack of) on rates of hydrogenation

Paul Joseph Dyson, Gabor Laurenczy

The solubility of hydrogen and the corresponding Henry coefficients for 11 ionic liquids have been determined in situ at 100 atm H-2 pressure and are much lower than expected; attempts to correlate the solubility of hydrogen in the ionic liquids with the r ...

2003

The electroreduction of hydrogen on platinum(111) in acidic media

Nicola Marzari, Roberto Car

We propose a new mechanism for the electroreduction of hydrogen in acidic media. The specific model and theoretical calculations are designed for the Pt(111) surface, because this is the only face that exhibits a clear first order phase transition. The bas ...

2002

Visible and Near-Infrared Luminescence of Lanthanide-Containing Dimetallic Triple-Stranded Helicates: Energy Transfer Mechanisms in the Sm

Jacques-Edouard Moser, Jean-Claude Bünzli

The photophysical properties of the triple-stranded dimetallic helicates [Ln2(LC−2H)3]·H2O (Ln = Nd, Sm, Dy, Yb) are determined in water and D2O solutions, and energy transfer processes are modeled for SmIII. The luminescence of NdIII, SmIII, and YbIII is ...

2002

Visible and Near-Infrared Luminescence of Lanthanide-Containing Dimetallic Triple-Stranded Helicates: Energy Transfer Mechanisms in the SmIII and YbIII Molecular Edifices

Jacques-Edouard Moser

2002

Separation of binary mixtures by thermostatic sweeping gas membrane distillation II. Experimental results with aqueous formic acid solutions

Urs von Stockar, Ian William Marison

Aq. solns. of formic acid were exptl. investigated in a modified sweeping gas membrane distn. (SGMD) configuration. A thermostated sweeping gas was used in order to enhance the mass transfer performance. A new tubular module was designed and built for this ...

2002

Molecular dynamics simulations of MRI-relevant GdIII chelates: direct access to outer-sphere relaxivity

André Merbach, Lothar Helm, Alain Borel

he structure and dynamics of the surrounding water were studied through molecular dynamics (MD) simulations for several GdIII polyaminocarboxylate and polyaminophosphonate complexes in aqueous solution. The radial distribution functions (rdf) show that a f ...

2001

Soft and rigid two-level microfluidic networks for patterning surfaces

Nico de Rooij

We describe the microfabrication and use of elastomeric and rigid two-level microfluidic networks (μFNs), made of poly(dimethylsiloxane) (PDMS) or Si, for patterning surfaces. The first level corresponds to microchannels and the second to via holes through ...

2001

Polymeric aqua(glutarato)(hydrogen glutarato)lanthanum(III) monohydrate

Gervais Chapuis

The structure of the title compound, [La(C5H6O4)(C5H7O4)(H2O)] . H2O, consists of dense layers formed by chains of one-edge-sharing LaO9 (H2O) polyhedra, linked together by the glutarate ligand. The three-dimensional polymeric structure, built up through c ...

2000

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