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聚氧乙烯-六氟砷酸锂复合物不同结晶结构的^13C谱归属

Structures of Crystalline Poly(ethyl oxide)/LiAsF_6 Complexes Determined by Solid-State High-Resolution ^(13)C Nuclear Magnetic Resonance
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摘要 聚氧乙烯-六氟砷酸锂复合物在不同的退火温度下会形成两种不同的结晶结构,其固体核磁共振13C谱具有很高的分辨率.利用二维交换13C谱和13C fp-RFDR(finite-pulse radio-frequency-driven recoupling)双量子-单量子(DQ-SQ)实验对复合物结晶的信号进行归属,为从分子水平上研究结晶区中不同-CH2-基团的运动提供实验依据. Depending on the annealing temperature, PEO/LiAsF6complex can form two different crystalline structures. The13C NMR spectra of both structures show high spectral resolution. In this study, 2D exchange13C experiment and13C 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.
出处 《波谱学杂志》 CAS CSCD 北大核心 2015年第3期399-408,共10页 Chinese Journal of Magnetic Resonance
基金 国家自然科学基金资助项目(21103050,21373086)
关键词 固体核磁共振(solid-state NMR) 归属 二维交换^13C谱 fp-RFDR 聚合物电解质 solid-state NMR, assignment, 2D exchange ^13C spectra, fp-RFDR, polymer
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