High Pressure Study of Rotational Dynamics of Perylene and Sodium 8-methoxypyrene-1,3,6-trisulfonate in Imidazolium-Based Ionic Liquids

DOI PDF Web Site Web Site 被引用文献1件 参考文献48件

書誌事項

公開日
2014-05-10
資源種別
journal article
権利情報
  • http://www.springer.com/tdm
DOI
  • 10.1007/s10953-014-0166-3
公開者
Springer Science and Business Media LLC

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説明

Rotation times of perylene and 8-methoxypyrene-1,3,6-trisulfonate (MPTS) in 1-alkyl-3-methylimidazolium tetrafluoroborate and 1-alkyl-3-methylimidazolium hexafluorophosphate under high pressure have been examined by means of time-resolved fluorescence anisotropy measurements. The isothermal compression of sample solutions by the application of high pressure can change the solvent viscosity alone over a wide range, allowing for an observation of the pure viscosity dependence of rotation times at a constant temperature (45 °C). Rotation times of both perylene and MPTS show a considerably nonlinear dependence on the solvent viscosity and a substantial deviation from the predictions of hydrodynamic and quasihydrodynamic theories, particularly at high pressures.

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