聚氧乙烯-六氟砷酸锂复合物不同结晶结构的13C谱归属
收稿日期: 2014-10-09
修回日期: 2015-07-21
网络出版日期: 2015-09-05
基金资助
国家自然科学基金资助项目(21103050, 21373086)
Structures of Crystalline Poly(ethyl oxide)/LiAsF6 Complexes Determined by Solid-State High-Resolution 13C Nuclear Magnetic Resonance
Received date: 2014-10-09
Revised date: 2015-07-21
Online published: 2015-09-05
Supported by
国家自然科学基金资助项目(21103050, 21373086)
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．
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
徐玮婧 , 刘清华 , 胡炳文* , 陈群 . 聚氧乙烯-六氟砷酸锂复合物不同结晶结构的13C谱归属[J]. 波谱学杂志, 2015 , 32(3) : 399 -408 . DOI: 10.11938/cjmr20150301
Depending on the annealing temperature, PEO/LiAsF6 complex 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/LiAsF6 complexes. 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
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