Deuterium NMR and differential scanning calorimetric studies of the calcium salts of rhodium and iridium pentadeuterides, Ca2RhD5 and Ca2IrD5.

The deuterium NMR spectra of the ternary metal deuterides (TMDs) Ca(2)RhD(5) and Ca(2)IrD(5) show that the disorder is dynamic at room temperature, with barriers to the motion of 31.8 and 39.0 kJ mol(-1), respectively.

Poly(N,N,N-trimethylammoniumalkyl acrylamide chloride) based hydrogels for serum cholesterol reduction.

Hydrogels present an attractive alternative to nanoscale block copolymer aggregates and microscale resin beads as potential asystemic serum cholesterol reduction materials. Not only would the oral delivery of these materials be more pleasant than the sand-like bile salt anion sequestrant beads but also the hydrogel preparation is much simpler than the copolymer aggregate analogues [Cameron, N. S.

Cocrystallization model for synthetic biodegradable poly(butylene adipate-co-butylene terephthalate).

Synthetic biodegradable poly(butylene adipate-co-butylene terephthalate), P(BA-co-BT), with 56 mol % butylene adipate, BA, was characterized by solid-state NMR spectroscopy, thermal analysis, X-ray diffraction, computer modeling, and polarization microscopy. The NMR study showed the presence of BA and butylene terephthalate, BT. T(1C) NMR measurements proved that some BA and BT units were in crystalline regions.

Characterization of polyacrylamide-stabilized Pfl phage liquid crystals for protein NMR spectroscopy.

A new polymer-stabilized nematic liquid crystal has been characterized for the measurement of biomolecular residual dipolar couplings. Filamentous Pf1 phage were embedded in a polyacrylamide matrix that fixes the orientation of the particles. The alignment was characterized by the quadrupolar splitting of the 2H NMR water signal and by the measurement of 1H-15N residual dipolar couplings (RDC) in the archeal translation elongation factor 1beta.