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Dielectric Properties of Low-Molecular Weight DNA in Aqueous Solutions at Low Ionic Strength

  • Th. Vreugdenhil
  • F. van der Touw
  • M. Mandel

Abstract

The dielectric properties of sonicated calf-thymus Na-DNA (Mw ≃ 3 x 105 g mol-1) have been investigated in the frequency range 5 kHz–100 MHz, both in pure water and in 3 x 10-4 MNaCl. These properties have been found to be qualitatively analogous to those observed for other, synthetic polyelectrolytes both in their frequency and concentration dependence. No specific effects could be detected. The experimental results, after extrapolation to zero concentration, have been interpreted in terms of the theory proposed previously by Van der Touw and Mandel.

Keywords

Dielectric Property Infinite Dilution Dielectric Parameter Electric Permittivity Dispersion Region 
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Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • Th. Vreugdenhil
    • 1
  • F. van der Touw
    • 1
  • M. Mandel
    • 1
  1. 1.Department of Physical Chemistry, Gorlaeus LaboratoriesUniversity of LeidenLeidenThe Netherlands

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