Solid State NMR Method for the Determination of 3D Zeolite Framework/Sorbate Structures: 1H/29Si CP MAS NMR Study of the High-Loaded Form ofp-Xylene in ZSM-5 and Determination of the Unknown Structure of the Low-Loaded Form

2005 ◽  
Vol 127 (20) ◽  
pp. 7543-7558 ◽  
Author(s):  
Colin A. Fyfe ◽  
Anix C. Diaz ◽  
Hiltrud Grondey ◽  
Andrew R. Lewis ◽  
Hans Förster
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Mas Nmr ◽  
Zeolite Framework ◽  
Nmr Method ◽  
Nmr Study ◽  
Unknown Structure ◽  
Cp Mas Nmr

Investigating Sorption on Iron−Oxyhydroxide Soil Minerals by Solid-State NMR Spectroscopy:  A6Li MAS NMR Study of Adsorption and Absorption on Goethite

2005 ◽  
Vol 109 (39) ◽  
pp. 18310-18315 ◽  
Author(s):  
Ulla Gro Nielsen ◽  
Younkee Paik ◽  
Keinia Julmis ◽  
Martin A. A. Schoonen ◽  
Richard J. Reeder ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Mas Nmr ◽  
Iron Oxyhydroxide ◽  
Soil Minerals ◽  
Solid State Nmr Spectroscopy ◽  
Nmr Study

Solid-state C-13 CP/MAS NMR study of Baganuur coal, Mongolia: Oxygen-loss during coalification from lignite to subbituminous rank

2010 ◽  
Vol 82 (1-2) ◽  
pp. 37-44 ◽  
Author(s):  
Bat-Orshikh Erdenetsogt ◽  
Insung Lee ◽  
Sung Keun Lee ◽  
Yoon-Joo Ko ◽  
Delegiin Bat-Erdene
Keyword(s):  
Solid State ◽  
Mas Nmr ◽  
Oxygen Loss ◽  
Nmr Study ◽  
Cp Mas Nmr

scholarly journals Dynamics and interactions of ibuprofen in cyclodextrin nanosponges by solid-state NMR spectroscopy

2017 ◽  
Vol 13 ◽  
pp. 182-194 ◽  
Author(s):  
Monica Ferro ◽  
Franca Castiglione ◽  
Nadia Pastori ◽  
Carlo Punta ◽  
Lucio Melone ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Nmr Spectra ◽  
Ethylenediaminetetraacetic Acid ◽  
Drug Loading ◽  
Structural Features ◽  
Mas Nmr ◽  
Polymeric Scaffold ◽  
Cyclodextrin Nanosponges ◽  
Cp Mas Nmr

Two different formulations of cyclodextrin nanosponges (CDNS), obtained by polycondensation of β-cyclodextrin with ethylenediaminetetraacetic acid dianhydride (EDTAn), were treated with aqueous solutions of ibuprofen sodium salt (IbuNa) affording hydrogels that, after lyophilisation, gave two solid CDNS-drug formulations. 1H fast MAS NMR and 13C CP-MAS NMR spectra showed that IbuNa was converted in situ into its acidic and dimeric form (IbuH) after freeze-drying. 13C CP-MAS NMR spectra also indicated that the structure of the nanosponge did not undergo changes upon drug loading compared to the unloaded system. However, the 13C NMR spectra collected under variable contact time cross-polarization (VCT-CP) conditions showed that the polymeric scaffold CDNS changed significantly its dynamic regime on passing from the empty CDNS to the drug-loaded CDNS, thus showing that the drug encapsulation can be seen as the formation of a real supramolecular aggregate rather than a conglomerate of two solid components. Finally, the structural features obtained from the different solid-state NMR approaches reported matched the information from powder X-ray diffraction profiles.

Crowned polyacetylene. 2. cis form determination of poly(4′-ethynylbenzo-15-crown-5) by solid-state NMR method

1995 ◽  
Vol 33 (15) ◽  
pp. 2151-2158 ◽  
Author(s):  
Toyoji Kakuchi ◽  
Shigeyuki Matsunami ◽  
Hiroyuki Kamimura ◽  
Fumiaki Ishii
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Nmr Method
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