High-field, high-resolution proton "magic-angle" sample-spinning nuclear magnetic resonance spectroscopic studies of gel and liquid crystalline lipid bilayers and the effects of cholesterol

1988 ◽  
Vol 110 (4) ◽  
pp. 1059-1065 ◽  
Author(s):  
Jeffrey. Forbes ◽  
Cynthia. Husted ◽  
Eric. Oldfield
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Lipid Bilayers ◽  
High Field ◽  
Liquid Crystalline ◽  
Spectroscopic Studies ◽  
Magic Angle ◽  
Magic Angle Sample Spinning ◽  
Nuclear Magnetic

MASS-NMR structural analysis of barium aluminofluorophosphate glasses with and without nitridation

1990 ◽  
Vol 5 (4) ◽  
pp. 835-840 ◽  
Author(s):  
Joseph P. Fletcher ◽  
Subhash H. Risbud ◽  
R. James Kirkpatrick
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Structural Analysis ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Local Structure ◽  
Nearest Neighbors ◽  
Magic Angle ◽  
Magic Angle Sample Spinning ◽  
Nuclear Magnetic

The local structure of barium-aluminofluorophosphate (Ba–Al–P–O–F) glasses was investigated using high resolution magic-angle sample spinning nuclear magnetic resonance (MASS-NMR) spectroscopy. The 27Al spectra show three different aluminum environments [Al(4), Al(5), and Al(6)] in these glasses. Changes were observed due to the addition of fluorine and nitrogen. 31P results indicate only one type of phosphorus environment which shifts with fluorine additions. The 19F spectra suggest that fluorine has both Ba and Al as nearest neighbors.

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