Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 138, Issue 11, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4796198
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Funding
- Deutsche Forschungsgemeinschaft
- FWF Austrian Science Fund
- China Scholarship Council
- Austrian Science Fund (FWF) [P 23494] Funding Source: researchfish
- Austrian Science Fund (FWF) [P23494] Funding Source: Austrian Science Fund (FWF)
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The solvation response of a polarity probe in a conducting liquid is analyzed based on simple continuum theory. A multi-exponential description of the dynamics is inverted to give an effective dc conductivity and a generalized permittivity spectrum in terms of Debye modes. For Coumarin 153 in ionic liquids the conductivity is found to be reduced systematically from the bulk value, whereas the permittivity from GHz-THz bulk absorption measurements is well reproduced by the solvation experiment. Thus, by using a dye as molecular antenna, the dielectric dispersion of the microscopic environment can be obtained. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4796198]
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