Temperature-independent hole mobility in discotic liquid crystals
- 10 January 2001
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 114 (4), 1797-1802
- https://doi.org/10.1063/1.1334958
Abstract
Experimental measurements are presented of the hole mobilities of four conjugated discotic systems, forming columnar liquid crystals, as a function of temperature. The measurements cover the crystalline/glassy phase and mesophase of these materials. It is a remarkable fact that the mobility is almost independent of temperature in the range Various explanations of a weak temperature dependence exist and these are explored. They include the small polaron of Holstein in the nonadiabatic limit and the effect of the dynamic disorder present in the system.
Keywords
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