NMR study of ion-conducting organic-inorganic nanocomposites poly(ethylene glycol) -: Silica -: LiClO4

被引：56

作者：

Mello, NC

Bonagamba, TJ

Panepucci, H

Dahmouche, K

Judeinstein, P

Aegerter, MA

机构：

[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] UNESP, Inst Quim Araraquara, BR-14800900 Araraquara, SP, Brazil

[3] Univ Paris Sud, Chim Organ Struct Lab, UPRESA CNRS 8074, F-91405 Orsay, France

[4] Inst Neue Mat, Dept Coating Technol, D-66123 Saarbrucken, Germany

来源：

MACROMOLECULES | 2000年 / 33卷 / 04期

关键词：

D O I：

10.1021/ma991624w

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Hybrid organic-inorganic ionic conductors, also called ormolytes, were obtained by dissolution of LiClO4 into silica/poly(ethylene glycol) matrices. Solid-state nuclear magnetic resonance (NMR) was used to probe the inorganic phase structure (Si-29) and the effects of the temperature and composition on the dynamic behavior of the ionic species (Li-7) and the polymer chains (H-1 and C-13). The NMR results between -100 and +90 degrees C show a strong correlation with ionic conductivity and differential scanning calorimetry experiments. The results also demonstrate that the cation mobility is assisted by segmental motion of the polymer, which is in agreement with the results previously reported for pure poly(ethylene oxide), PEG, electrolytes.

引用

页码：1280 / 1288

页数：9

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