ゲスト-ホスト系に見られる誘電緩和強度の異常温度依存性のモデル

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  • ゲスト-ホストケイ ニ ミラレル ユウデン カンワ キョウド ノ イジョウ オンド イソンセイ ノ モデル
  • Model on Anomalous Temperature Dependence of Dielectric Relaxation Amplitude in Host-Guest Systems
  • ゲスト　－　ホストケイ　ニ　ミラレル　ユウデンカンワキョウドノ　イジョウオンド　イゾンセイ　ノ　モデル

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type:論文(Article)

Normally dielectric relaxation amplitudes are increased with decreasing temperature. However, some host-guest systems, such as hydrated proteins and hydrated porous media, exhibit anomalous temperature dependence where relaxation amplitude is decreased with decreasing temperature. In order to explain this anomalous dependence, I developed simplified model which consists of polar guests and a host with numerous connecting sites on its surface. Dielectric relaxation amplitude calculated from the model exhibits Onsager type normal temperature dependence in high temperature regime and Arrhenius type anomalous temperature dependence in low temperature regime. According from this model, the anomalous temperature dependence is explained as antiparallel dipolar-dipolar correlation intermediated via host.

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