Nanocomposites ... matrices Organique

NMR Study of Ion-Conducting Organic−Inorganic Nanocomposites Poly(ethylene glycol)−Silica−LiClO4

Cover ImageInstituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, CEP:  13560-970, São Carlos-SP, Brazil; Instituto de Química de Araraquara-UNESP, Av. Prof. Francisco Degni s/n, CEP:  14800−900, Araraquara-SP, Brazil; Laboratoire de Chimie Structurale Organique, UPRESA CNRS 8074, Université Paris-Sud, 91405 Orsay, France; Institut für Neue Materialien-Department of Coating Technology, Im Stadtwald, Gebäude 43, D-66123, Saarbrücken, Germany

Cover ImageMacromolecules, 2000, 33 (4), pp 1280–1288

DOI: 10.1021/ma991624w

Section:

Abstract

Hybrid organic−inorganic ionic conductors, also called ormolytes, were obtained by dissolution of LiClO4 into silica/poly(ethylene glycol) matrices.Cover Image on the dynamic behavior of the ionic species (7Li) and the polymer chains (1H and 13C). The NMR results between −100 and +90 °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), PEO, electrolytes.

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Cover ImageThis article has been cited by 13 ACS Journal articles (5 most recent appear below).

  • Kerstin Schäler, Anja Achilles, Ruth Bärenwald, Christiane Hackel, and Kay Saalwächter

    Macromolecules2013 46 (19), 7818-7825

  • Dynamics in Crystallites of Poly(ε-caprolactone) As Investigated by Solid-State NMR

    Kerstin Schäler, Anja Achilles, Ruth Bärenwald, Christiane Hackel, and Kay Saalwächter

    We investigate the molecular dynamics within the crystallites of poly(ε-caprolactone), PCL, crystallized from the melt by means of high-field 13C and low-field 1H NMR spectroscopy, addressing the question of whether it can be classified as a “crystal-...

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