High resolution mass spectrometry of trimethylamine

High resolution shows that the four principal fragment peaks of trimethylamine are singlets. Close studies of the metastable transitions in the spectrum have established the origin of almost all fragment peaks.     

Beitrag zur Kenntnis des Systems La−C−N

An isothermal section at 1,200°C of the partial system La–LaN–LaC₂ was examined by X-ray and metallographic techniques. There is no evidence of an appreciable solid solubility of carbon in LaN or of nitrogen in La₂C₃ or LaC₂ at 1,200°C. There are indications however that at higher temperatures, especially that of the electric arc, the solubility of carbon in LaN might be appreciable or that a carbonitride phase of Lanthanum might exist. LaC₂ reacts with nitrogen under pressure at 1,200°C to form a new carbonitride phase with the composition La₁C_0,88N_0,77.

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Mit 2 Abbildungen     

Self-assembly of a twelve-component hexanuclear metallomacrocycle constructed with a novel tri-amino ligand

Reaction of the novel ligand cis,trans-1,3,5-triaminocyclohexane, which contains two types of metal binding sites trans to each other, with palladium(II) chloride results in the self assembly of a hexanuclear ring cluster that has been characterised both in the solid state and in solution.     

Surface Enhanced Resonance of Metal Nano Clusters: A Novel Tool for Proteomics

A novel nano-tool based on metal clusters enables the transduction of changes of biorecognitive binding as well as conformation quantitatively into an optical signal which can be observed directly as a color change of a sensor-chip surface.Proteins including various enzymes and serum proteins were spotted via micro-arraying onto the chip surface forming monolayer and thin film dots. Multi-layered (up to 300 nm thick) nano-gel-pads were stabilized by photo crosslinking the protein dots with UV-light. By deposition of metal-nano clusters, synthesized via chemical means or sputter coating on top of photo-crosslinked macromolecules an optical resonance effect was obtained.The response of the novel surface enhanced absorption cluster sensor-chip was transduced spectroscopically in the visible and IR range of the spectrum via an 8 m resolution reflectance scanner.