On the molecular theory of dimer liquid crystals

Details On the molecular theory of dimer liquid crystals On the molecular theory of dimer liquid crystals

2004-10-14

arxiv.org/abs/cond-mat/0410350v1

LIQ CRYST 32 (11-12): 1397-1407 NOV 2005

Physics

Condensed Matter

Soft Condensed Matter

20 pages, 5 figures

Scientific paper

We present a statistical mechanics approximation scheme for the explicit treatment of spacer-mediated configurational correlations among the mesogenic units that form a dimer molecule. The approximation is applied to the description of the nematic phase of linear uniaxial dimers interacting via a standard molecular pair-potential. Transition temperatures, order parameters and pair correlation averages are calculated for different spacer lengths. The results readily reproduce the experimentally observed trends of phase transition thermodynamics and of dipolar correlations deduced from dielectric studies.

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