Consortium of Swiss Academic Libraries

Surface Explosion Chemistry of Malic Acid on Cu(110)

Roth, Christian ; Ernst, Karl-Heinz

In: Topics in Catalysis, 2011, vol. 54, no. 19-20, p. 1378-1383

Université de Neuchâtel

Preparation, size separation and chiroptical properties of chiral gold nanoparticles

Gautier, Cyrille ; Bürgi, T. (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2008 ; Th.1993.

The knowledge of surface-molecule interactions is fundamental in order to understand and to take advantage of the physicochemical properties of organic-inorganic hybrid materials. How does a surface react when a molecule adsorbs? How does the molecule adsorb? What is the conformation of the molecule on the surface? This thesis is intended to give some insight on these phenomena. Monolayer...

Université de Fribourg

Synthesis of C 1- and C 3ν-symmetric porphyrin trimers based on triphenylmethane cores

Papamicaël, Cyril A. ; Mongin, Olivier ; Gossauer, Albert

In: Monatshefte für Chemie / Chemical Monthly, 2007, vol. 138, no. 8, p. 791-796

This work describes the synthesis of a new class of tripodaphyrin derivatives with a triphenylmethane core. Both C₁- and C3ν-symmetric tetrahedral large molecules with covalently linked rigid elements were obtained.

Université de Neuchâtel

Properties of chiral self-assembled monolayers at the solid-liquid interface investigated by FT-IR ATR spectroscopy

Bieri, Marco ; Bürgi, T (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2007 ; 1926.

The main distinctive feature of modern surface science is that it deals with single crystal surfaces, which are well-defined from the viewpoint of their structure and composition. However, for the preparation of crystal surfaces and their analysis, the requirement of UHV equipment greatly limits applications. While atomically clean surfaces analyzed under artificial measurement conditions still...

Université de Neuchâtel

Synthèse et application de sélecteurs chiraux à base de cyclodextrines en chromatographie gazeuse

Vaucher, Jean-Marc ; Tabacchi, Raffaele (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2006 ; 1918.

This study comprised the synthesis of cyclodextrin dimers substituted by entities such as acetyl, t-butyldimethylsilyl or alkyls in order to produce capillary columns for chiral analysis in gas chromatography. Production of dimeric compounds required the fabrication of monosubstituted monomers using selective pathways. Particular care was taken of the optimization of the various reactions. The...

Université de Neuchâtel

Enantiodiscrimination between an N-Acetyl-L-cysteine SAM and Proline : An In Situ Spectroscopic and Computational Study

Bieri, Marco ; Bürgi, Thomas

In: ChemPhysChem, 2006, vol. 7, p. 514-523

A combination of attenuated total reflection infrared (ATR-IR) and modulation excitation spectroscopy (MES) is used to study the enantiodiscriminating interactions between proline and a chiral, self-assembled monolayer (SAM) of N-acetyl-L-cysteine on gold. The N-acetyl-L-cysteine SAM consists of a mixture of protonated and deprotonated molecules. Whereas both species are influenced...

Université de Neuchâtel

Chiral Arene Ruthenium Complexes : Synthesis and Molecular Structure of the Enantiopure Cluster Cation (S)-[H3Ru3{C6H5[CH(CH3)CH2OH]}(C6Me6)2(O)]+

Vieille-Petit, Ludovic ; Therrien, Bruno ; Süss-Fink, Georg

In: European Journal of Inorganic Chemistry, 2003, vol. 5, p. 3707 - 3711

The reaction of enantiopure (R)-(2-cyclohexa-1,4-dienyl)propan-1-ol with ruthenium chloride hydrate yields, without racemisation of the chiral ligand, the chloro-bridged dinuclear complex (S,S)-[RuCl2{C6H5[CH(CH3)CH2OH]}]2 (1). The dimer 1 reacts with triphenylphosphane to give the mononuclear complex...