14N solid-state NMR: a sensitive probe of the local order in zeolites

2013 ◽  
Vol 15 (42) ◽  
pp. 18349 ◽  
Author(s):  
Eddy Dib ◽  
Tzonka Mineva ◽  
Philippe Gaveau ◽  
Bruno Alonso
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Local Order

Solid State NMR Analysis of Two Grafted Biopolymers

2015 ◽  
Vol 1767 ◽  
pp. 113-118 ◽  
Author(s):  
Gerardo Cedillo ◽  
Emilio Bucio
Keyword(s):  
Solid State ◽  
Smart Materials ◽  
Solid State Nmr ◽  
Biomedical Applications ◽  
Structural Information ◽  
Local Order ◽  
Order Structure ◽  
Structure And Properties ◽  
Γ Radiation ◽  
Potential Alternative

ABSTRACTA potential alternative to achieve smart materials for biomedical applications is the combination of natural and synthetic polymers. In order to understand the structure and properties of two γ-radiation grafted biopolymers, chitosan-g-poly(N-isopropylacrylamide) (CS/PNIPAAm) and cotton-g-2-(dimethylamino) ethyl methacrylate (CG-DMAEMA) were analyzed by solid state nuclear magnetic resonance (SSNMR) 13C-CPMAS at different contact times (tCP). The use of different tCP in this grafted biopolymers showed that chemical shifting, broadening, size and symmetry of the some signals, gives important information for structure elucidation and molecular mobility. SSNMR spectra indicate changes in the local order structure, CG suffered less modifications when it is grafted than CS. CG-g-DMAEMA spectrum is very similar to CG spectrum, in contrast with spectrum of CS-g-NIPAAm, is very different than CS. Spectra of swelling polymers in water showed more structural information about secondary structure.

A useful tool for the elaboration of new solid-state NMR experiments: PULSAR

1995 ◽  
Vol 92 ◽  
pp. 1939-1942 ◽  
Author(s):  
JP Amoureux ◽  
C Fernandez ◽  
Y Dumazy
Keyword(s):  
Solid State ◽  
Solid State Nmr

Quantitative analysis by 13C solid-state NMR of eumelanins

1994 ◽  
Vol 91 ◽  
pp. 881-887 ◽  
Author(s):  
M Hervé ◽  
J Hirschinger ◽  
P Granger ◽  
P Gilard ◽  
N Goetz
Keyword(s):  
Quantitative Analysis ◽  
Solid State ◽  
Solid State Nmr

Structural Analysis of Slag and Cement Materials by Solid-state NMR

2018 ◽  
Vol 56 (5) ◽  
pp. 454-459
Author(s):  
T. Takahashi ◽  
T. Ohkubo ◽  
K. Kanehashi
Keyword(s):  
Solid State ◽  
Structural Analysis ◽  
Solid State Nmr
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