Structures of Crystalline Poly(ethyl oxide)/LiAsF6 Complexes Determined by Solid-State High-Resolution 13C Nuclear Magnetic Resonance

doi:10.11938/cjmr20150301

Abstract

Abstract:

Depending on the annealing temperature, PEO/LiAsF₆complex can form two different crystalline structures. The ¹³C NMR spectra of both structures show high spectral resolution. In this study, 2D exchange ¹³C experiment and ¹³C fp-RFDR (finite-pulse radio-frequency-driven recoupling) DQ-SQ (double quantum-single quantum) experiment were used to assign the resonances of crystalline PEO/LiAsF₆complexes. The results are useful for better understanding of the molecular motions in different crystalline structures.

Key words: solid-state NMR, assignment, 2D exchange ¹³C spectra, fp-RFDR, polymer electrolytes

CLC Number:

O482.53

XU Wei-jing，LIU Qing-hua，HU Bing-wen*，CHEN Qun. Structures of Crystalline Poly(ethyl oxide)/LiAsF₆ Complexes Determined by Solid-State High-Resolution ¹³C Nuclear Magnetic Resonance[J]. Chinese Journal of Magnetic Resonance, 2015, 32(3): 399-408.

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Structures of Crystalline Poly(ethyl oxide)/LiAsF₆ Complexes Determined by Solid-State High-Resolution ¹³C Nuclear Magnetic Resonance

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