Buscar
Mostrando ítems 1-10 de 534
Carbon dots structural characterization by solution-state NMR and UV-visible spectroscopy and DFT modeling
(Elsevier Science, 2021-10-30)
A combination of experimental and theoretical results was used for the structural characterization of Carbon dots (Cdots). The synthesis of the Cdots was performed using glucose as a precursor and via the microwave method ...
Succinyl-β-cyclodextrin: Influence of the substitution degree on albendazole inclusion complexes probed by NMR
(Elsevier Science, 2018-11)
Succinyl-β-CD derivatives were obtained by green synthesis with degrees of substitution (DS) 1.3 and 2.9. The spray-drying technique was used to obtain albendazole (ABZ):succinyl-β-CD inclusion complexes. Phase solubility ...
Distinct conformational states of the Alzheimer β-amyloid peptide can be detected by high-pressure NMR spectroscopy
(Wiley-VCH VerlagWeinheim, 2013-08)
Folding under pressure: High-pressure NMR spectroscopy detects three different conformational states of the Aβ-peptide in solution: a compactly folded state 1, a partially folded state 2′, and a random-coil like state 2′′ ...
Unexpected solvent impact in the crystallinity of praziquantel/poly (vinylpyrrolidone) formulations. A solubility, DSC and solid-state NMR study
(Elsevier Science, 2016-09)
The saturation solubility of PVP:PZQ physical mixtures (PMs) and solid dispersions (SDs) prepared from ethanol (E/E) or ethanol/water (E/W) by the solvent evaporation method at 1:1, 2:1 and 3:1 ratio (w/w) was determined. ...
Molecular structure, experimental and theoretical 1H and 13C NMR chemical shift assignment of cyclic and acyclic α,β-unsaturated esters
(John Wiley & Sons Ltd, 2014-01)
The experimental 1H and 13C NMR spectra of 13 phenyl cinnamates and four 4-methylcoumarins were investigated and their chemical shifts assigned on the basis of the two-dimensional spectra. For the unsubstituted cinnamic ...
Generation and Stability of the gem-Diol Forms in Imidazole Derivatives Containing Carbonyl Groups. Solid-State NMR and Single-Crystal X-ray Diffraction Studies
(American Chemical Society, 2018-01)
The stability of gem-diol forms in imidazolecarboxaldehyde isomers was studied by solid-state nuclear magnetic resonance (ss-NMR) combined with single-crystal X-ray diffraction studies. These methodologies also allowed ...
Folding Of Xylan Onto Cellulose Fibrils In Plant Cell Walls Revealed By Solid-state Nmr
(Nature Publishing GroupLondon, 2016)
The structure of b-diketones related to curcumin determined by X-ray crystallography, NMR (solution and solid state) and theoretical calculations
(Springer/Plenum Publishers, 2016-01)
<style type="text/css">p { margin-bottom: 0.25cm; direction: ltr; color: rgb(0, 0, 0); line-height: 120%; }p.western { font-family: "Times New Roman",serif; font-size: 12pt; }p.cjk { font-family: "Times New Roman",serif; ...
Sol-gel preparation of mesoporous Al2O3-SiO2 glasses: structural evolution monitored by solid state NMR
(SpringerNew York, 2014-06)
Glasses along the composition line 0.5Al2O3–xSiO2 (1 ≤ x ≤ 6) were prepared via a novel sol-gel route using tetraethylorthosilicate and aluminum lactate as precursors. The structural evolution from solution to gel to glass ...