Local Structure of Polyethylene Glycol-NaI Solid Polyelectrolyte as Studied by 13C and 23Na NMR.
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概要
- 論文の詳細を見る
<SUP>13</SUP>C CP/MAS NMR, <SUP>23</SUP>Na powder NMR, and <SUP>23</SUP>Na two dimensional nutation NMR were applied to complexes of Nal with polyethylene glycol (PEG) and tetraethylene glycol (TEG) to study the conformation of the polyethers and local structure around the Na<SUP>+</SUP>. <SUP>13</SUP>C chemical shift data suggest strongly that the polyether chains assume the gauche conformation in the complexes. <SUP>23</SUP>Na NMR spectrum of TEG–Nal complex gave a broad asymmetric line; simulation of the line shape led to <I>e</I><SUP>2</SUP><I>Qq</I>⁄<I>h</I>=590 kHz and η=0.7. No significant temperature dependence of the line shape was observed between 200 K and room temperature. For PEG–Nal complex <I>e</I><SUP>2</SUP><I>Qq</I>⁄<I>h</I> and η were estimated to be about 320 kHz and 0.7, respectively, from the nutation spectrum. On the basis of the above results, new model structures of PEG–Nal complex were presented.
- 公益社団法人 日本化学会の論文
著者
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Ueda Takahiro
Department Of Cardiology Edogawa Hospital
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Ohki Hiroshi
Department Of Chemistry Faculty Of Science Osaka University
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Nakamura Nobuo
Department Of Cardiology Seiyu Memorial Hospital
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Chihara Hideaki
Department Of Chemistr Faculty Of Science Osaka University
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Ohki Hiroshi
Department of Chemistry, Faculty of Science, Osaka University
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