Solid state NMR study of sodium thiocyanate/poly(ethylene oxide) electrolytes.
1H-, 13C-, 23Na-solid state NMR measurements have been used to characterise the morphology and the dynamics of several NaSCN-PEO mixtures. Selective 13C-MAS experiments allowed to determine the composition of the (PEO)nNaSCN samples in terms of the different phases present, as well as the real stoichiometry of the crystalline complex. 1H- and 13C-spin-lattice relaxation times provided estimates of the dimensions of the different domains and gave information on the dynamics of the polymer chains. 23Na-MAS spectra and 2D nutation experiments allowed to individuate the presence of different environments for the sodium cations on the basis of their quadrupolar interactions.
Bartolotta
A
A
Istituto Tecniche Spettroscopiche del CNR, Messina, Italy.
Forte
C
C
Geppi
M
M
Minniti
D
D
Visalli
G
G
D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D011092:Polyethylene Glycols / Q000737:chemistry*; D011522:Protons; D012975:Sodium Isotopes; D013861:Thiocyanates / Q000737:chemistry*
D002247:Carbon Isotopes; D011522:Protons; D012975:Sodium Isotopes; D013861:Thiocyanates; D011092:Polyethylene Glycols; C024553:sodium thiocyanate