波谱学杂志 ›› 2015, Vol. 32 ›› Issue (3): 399-408.doi: 10.11938/cjmr20150301

• 研究论文 • 上一篇    下一篇

聚氧乙烯-六氟砷酸锂复合物不同结晶结构的13C谱归属

徐玮婧,刘清华,胡炳文*,陈群   

  1. 上海市磁共振重点实验室,华东师范大学 物理系,上海 200062
  • 收稿日期:2014-10-09 修回日期:2015-07-21 出版日期:2015-09-05 发布日期:2015-09-05
  • 作者简介:徐玮婧(1990-),女,重庆开县人,硕士研究生,无线电物理专业. *通讯联系人:胡炳文,电话:021-62233633, E-mail: bwhu@phy.ecnu.edu.cn
  • 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

XU Wei-jing,LIU Qing-hua,HU Bing-wen*,CHEN Qun   

  1. Shanghai Key Laboratory of Magnetic Resonance, Department of Physics, East China Normal University, Shanghai 200062, China
  • Received:2014-10-09 Revised:2015-07-21 Online:2015-09-05 Published:2015-09-05
  • About author:*Corresponding author: Hu Bing-wen, Tel: +86-021-62233633, Email: bwhu@phy.ecnu.edu.cn
  • Supported by:

    国家自然科学基金资助项目(21103050, 21373086)

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.

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

Abstract:

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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