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Divalent metal ions tune the self-splicing reaction of the yeast mitochondrial group II intron Sc .ai5γ

Erat, Michèle ; Sigel, Roland

In: JBIC Journal of Biological Inorganic Chemistry, 2008, vol. 13, no. 6, p. 1025-1036

Université de Neuchâtel

Analytical modelling of stable isotope fractionation of volatile organic compounds in the unsaturated zone

Bouchard, Daniel ; Cornaton, Fabien ; Höhener, P ; Hunkeler, Daniel

In: Journal of Contaminant Hydrology, 2011, vol. 119, p. 44-54

Analytical models were developed that simulate stable isotope ratios of volatile organic compounds (VOCs) near a point source contamination in the unsaturated zone. The models describe diffusive transport of VOCs, biodegradation and source ageing. The mass transport is governed by Fick's law for diffusion. The equation for reactive transport of VOCs in the soil gas phase was solved for different...

Université de Neuchâtel

Synthesis, Molecular Structure, and Anticancer Activity of Cationic Arene Ruthenium Metallarectangles

Mattsson, Johan ; Govindaswamy, Padavattan ; Renfrew, Anna K. ; Dyson, Paul J. ; Štěpnička, Petr ; Süss-Fink, Georg ; Therrien, Bruno

In: Organometallics, 2009, vol. 28, no. 15, p. 4350–4357

The cytotoxicities of a new series of cationic metallarectangles have been established in the A2780 ovarian cancer cell line. Interestingly, the large rectangles incorporating 1,2-bis(4-pyridyl)ethylene linkers are ca. 5 times more cytotoxic (IC50 ≤ 6 μM) than the 4,4-bipyridine analogues (IC50 ≥ 30 μM), thus suggesting a correlation between cytotoxicity and the size...

Université de Neuchâtel

Template-Directed Synthesis of Hexanuclear Arene Ruthenium Complexes with Trigonal-Prismatic Architecture Based on 2,4,6-Tris(3-pyridyl)triazine Ligands

Freudenreich, Julien ; Furrer, Julien ; Süss-Fink, Georg ; Therrien, Bruno

In: Organometallics, 2011, vol. 30, no. 5, p. 942–951

Cationic arene ruthenium metalla-prisms of the general formula [Ru6(p-cymene)6(3-tpt)2(OO∩OO)3]6+ (3-tpt = 2,4,6-tris(3-pyridyl)-1,3,5-triazine; OO∩OO = 5,8-dioxido-1,4-naphthoquinonato [1]6+ or 6,11-dioxido-5,12-naphthacenedionato [2]6+) have been obtained from the corresponding...

Université de Neuchâtel

Carbon Isotope Fractionation during Diffusion and Biodegradation of Petroleum Hydrocarbons in the Unsaturated Zone: Field Experiment at Værløse Airbase, Denmark, and Modeling

Bouchard, Daniel ; Hunkeler, Daniel ; Gaganis, Petros ; Aravena, Ramon ; Höhener, Patrick ; Broholm, Mette M.

In: Environmental Science & Technology, 2008, vol. 42, no. 2, p. 596–601

A field experiment was conducted in Denmark in order to evaluate the fate of 13 volatile organic compounds (VOCs) that were buried as an artificial fuel source in the unsaturated zone. Compound-specific isotope analysis showed distinct phases in the 13C/12C ratio evolution in VOC vapors within 3 m from the source over 114 days. At day 3 and to a lesser extent at day 6, the...