Search Results - "MERBACH, A. E."

Superparamagnetic gadonanotubes are high-performance MRI contrast agents by Sitharaman, B, Kissell, K R, Hartman, K B, Tran, L A, Baikalov, A, Rusakova, I, Sun, Y, Khant, H A, Ludtke, S J, Chiu, W, Laus, S, Tóth, E, Helm, L, Merbach, A E, Wilson, L J

“…We report the nanoscale loading and confinement of aquated Gd3+n-ion clusters within ultra-short single-walled carbon nanotubes (US-tubes); these Gd3+n@US-tube…”
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EPR Spectroscopy of MRI-Related Gd(III) Complexes:  Simultaneous Analysis of Multiple Frequency and Temperature Spectra, Including Static and Transient Crystal Field Effects by Rast, Sebastian, Borel, Alain, Helm, Lothar, Belorizky, Elie, Fries, Pascal H, Merbach, André E

“…For the first time, a very general theoretical method is proposed to interpret the full electron paramagnetic resonance (EPR) spectra at multiple temperatures…”
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Solid-State and Solution Properties of the Lanthanide Complexes of a New Heptadentate Tripodal Ligand:  A Route to Gadolinium Complexes with an Improved Relaxation Efficiency by Bretonnière, Yann, Mazzanti, Marinella, Pécaut, Jacques, Dunand, Frank A, Merbach, André E

“…The tripodal ligand (α,α‘,α‘ ‘nitrilotri(6-methyl-2-pyridinecarboxylic acid)) (H3tpaa) forms a Gd(III) complex which has a relaxivity (r 1p = 13.3 mM-1 s-1 at…”
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Second Coordination Shell Water Exchange Rate and Mechanism:  Experiments and Modeling on Hexaaquachromium(III) by Bleuzen, A, Foglia, F, Furet, E, Helm, L, Merbach, A. E, Weber, J

“…From our combined experimental and computer modeling study we found a structurally and kinetically well-defined second coordination shell around chromium(III)…”
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Interpretation of Activation Volumes for Water Exchange Reactions Revisited:  Ab Initio Calculations for Al3+, Ga3+, and In3+, and New Experimental Data by KOWALL, Th, CARAVAN, P., BOURGEOIS, H., HELM, L., ROTZINGER, F. P., MERBACH, A. E.

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Water exchange on metal ions: experiments and simulations by Helm, L., Merbach, A.E.

“…The water exchange reaction between coordination shells around metal ions in aqueous solution is a fundamental reaction in understanding the reactivity of…”
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Use of high pressure kinetic studies in determining inorganic substitution mechanisms by Merbach, A. E.

“…Abstract…”
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A Model for Sequential Threading of α-Cyclodextrin onto a Guest:  A Complete Thermodynamic and Kinetic Study in Water by Saudan, Christophe, Dunand, Frank A, Abou-Hamdan, Amira, Bugnon, Pascal, Lye, Peter G, Lincoln, Stephen F, Merbach, André E

“…The first variable-temperature and variable-pressure stopped-flow spectrophotometric study of the sequential threading of α-cyclodextrin (α-CD) onto the guest…”
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The elucidation of solvent exchange mechanisms by high-pressure NMR studies by Merbach, A. E.

“…Abstract…”
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High-Pressure Stopped-Flow Spectrometer for Kinetic Studies of Fast Reactions by Absorbance and Fluorescence Detection by Bugnon, Pascal, Laurenczy, Gábor, Ducommun, Yves, Sauvageat, Pierre-Yves, Merbach, André E, Ith, Roger, Tschanz, René, Doludda, Michael, Bergbauer, Rolf, Grell, Ernst

“…The development of a stopped-flow instrument that operates over a temperature range of −40 to +100 °C and up to 200 MPa is described. The system has been…”
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First Solvation Shell of the Cu(II) Aqua Ion: Evidence for Fivefold Coordination by Pasquarello, Alfredo, Petri, Ingrid, Salmon, Philip S., Parisel, Olivier, Car, Roberto, Tóth, Éva, Powell, D. Hugh, Fischer, Henry E., Helm, Lothar, Merbach, André E.

“…We determined the structure of the hydrated Cu(II) complex by both neutron diffraction and first-principles molecular dynamics. In contrast with the generally…”
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Recent developments in solvation and dynamics of the lanthanide(III) ions by Cossy, Cédric, Merbach, A. E.

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First in vivo MRI assessment of a self-assembled metallostar compound endowed with a remarkable high field relaxivity by Livramento, J B, Weidensteiner, C, Prata, M I M, Allegrini, P R, Geraldes, C F G C, Helm, L, Kneuer, R, Merbach, A E, Santos, A C, Schmidt, P, Tóth, E

“…{Fe[Gd(2)bpy(DTTA)(2)(H(2)O)(4)](3)}(4-) is a self-assembled, metallostar-structured potential MRI contrast agent, with six efficiently relaxing Gd(3+) centres…”
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Towards Rational Design of Fast Water-Exchanging Gd(dota-Like) Contrast Agents? Importance of the M/m Ratio by Dunand, Frank A., Dickins, Rachel S., Parker, David, Merbach, André E.

“…1H NMR line‐shape analysis and magnetisation‐transfer experiments at variable temperature and pressure have been used to elucidate the solution dynamics of…”
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Kinetics and mechanism of solvent-exchange and anation reactions of sterically hindered diethylenetriamine complexes of palladium(II) in aqueous solution by Berger, J, Kotowski, M, Van Eldik, R, Frey, U, Helm, L, Merbach, A. E

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Self-Assembly of Multinuclear Coordination Species with Chiral Bipyridine Ligands: Silver Complexes of 5,6-CHIRAGEN(o,m,p-xylidene) Ligands and Equilibrium Behaviour in Solution by Mamula, Olimpia, Monlien, Florence J., Porquet, Alain, Hopfgartner, Gérard, Merbach, André E., von Zelewsky, Alex

“…The complexation reactions between Ag+ and a series of enantiopure ligands belonging to the CHIRAGEN (from CHIRAlity GENerator) family (L 1, L 2, L 3, based on…”
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Denaturant-Induced Movement of the Transition State of Protein Folding Revealed by High-Pressure Stopped-Flow Measurements by Pappenberger, Günter, Saudan, Christophe, Becker, Michael, Merbach, André E., Kiefhaber, Thomas

“…The small all-β protein tendamistat folds and unfolds with two-state kinetics. We determined the volume changes associated with the folding process by…”
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Lanthanide Podates with Programmed Intermolecular Interactions:  Luminescence Enhancement through Association with Cyclodextrins and Unusually Large Relaxivity of the Gadolinium Self-Aggregates by Fatin-Rouge, Nicolas, Tóth, Éva, Perret, Didier, Backer, Robin H, Merbach, André E, Bünzli, Jean-Claude G

“…The synthesis of the phenyl anchored podand H4L1 fitted with four 3-carboxylate pyrazole arms and programmed for intermolecular interactions is reported, and…”
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Synthesis and complexation properties of DTPA-N,N''-bis[bis(n-butyl)]-N'-methyl-tris(amide). Kinetic stability and water exchange of its Gd3+ complex by Jaszberényi, Z, Tóth, E, Kálai, T, Király, R, Burai, L, Brücher, E, Merbach, A E, Hideg, K

“…A novel DTPA-tris(amide) derivative ligand, DTPA-N,N''-bis[bis(n-butyl)]-N'-methyl-tris(amide)(H2L3) was synthesized. With Gd3+, it forms a positively charged…”
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Mechanistic Aspects of the Reversible Binding of SO2 on Arylplatinum Complexes:  Experimental and ab Initio Studies by Albrecht, Martin, Gossage, Robert A, Frey, Urban, Ehlers, Andreas W, Baerends, Evert J, Merbach, André E, van Koten, Gerard

“…The detailed mechanism of the reversible binding and fast exchange of SO2 on the organoplatinum(II) complex [PtI(NCN)], 1, has been studied experimentally in…”
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