Anomalous dielectric relaxation of aqueous protein solutions

Nandi, Nilashis and Bagchi, Biman (1998) Anomalous dielectric relaxation of aqueous protein solutions. In: Journal of Physical Chemistry A, 102 (43). pp. 8217-8221.

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Abstract

Dielectric relaxation of aqueous protein solutions show many anomalous properties. For example, (i) protein solutions have higher static dielectric constant compared to that of pure water, (ii) the real part of the dielectric function (DF) exhibits a crossover with varying concentration, and (iii) the imaginary part of DF exhibits a bimodal frequency dependence. There is no coherent microscopic explanation available for any of these phenomena. Here we present the first unified, microscopic theory of the dielectric relaxation spectra of an aqueous protein solution that explains all the above anomalies, with excellent agreement with all the known experimental results

Item Type:	Journal Article
Publication:	Journal of Physical Chemistry A
Publisher:	American Chemical Society
Additional Information:	Copyright of this article belongs to American Chemical Society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	24 Feb 2009 11:44
Last Modified:	19 Sep 2010 04:59
URI:	http://eprints.iisc.ac.in/id/eprint/18049

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