NMR spectroscopy (Gunther, H.)

Nanoparticle size determination by (1)H NMR spectroscopy.

High-resolution solution (1)H NMR spectroscopy has been used to characterize the size of Pd dendrimer-encapsulated nanoparticles (DENs). The Pd nanoparticles measured by this technique contain 55, 147, 200, or 250 atoms, and they are encapsulated within sixth-generation, hydroxyl-terminated poly(amidoamine) PAMAM dendrimers (G6-OH). Detailed analysis of the NMR data shows that signals arising f...

Gasoline composition determined by 1 H NMR spectroscopy

A fast and simple H NMR spectroscopic method was developed for the concentration measurement of aromatic, olefinic and aliphatic fractions in gasoline samples. Simultaneously, individual components such as benzene, methyl tert-butyl ether and several dienes could be determined. The method relies on only a few, well-established assumptions about the molecular compositions and is therefore applic...

NMR Spectroscopy of Paramagnetic Complexes Part 39*-Natural Abundance *H NMR of Paramagnetic Sandwich Compounds

The methylated metallocenes (MeCp),M with M = V, Cr, Mn, Co, Ni (1-5) were investigated by 'H and 'H NMR spectroscopy at natural abundance. The 2H NMR signals are narrower by a factor of up to 30 compared with the corresponding 'H NMR signals, thus establishing an inexpensive method and a general improvement of the NMR spectra of paramagnetic x-complexes. This has allowed the resolution of the ...

NMR-Spectroscopy in Drug Analysis Quantitative NMR Spectroscopy

Gunther Stent

nervous system is choosing highly valued options, a rational maneuver; but the valuation on the drugassociated cues is pathologically high. So loosely, one might see this as a diminished will — a lowered capacity to choose behavioral options not leading to drugs, but resulting from bad valuations of cues associated with drugs. The mechanisms that make the choice conditioned on the valuation app...