Jump to main content
Jump to site search

Issue 43, 2013
Previous Article Next Article

Mesogen polarity effects on biaxial nematics. Centrally located dipoles

Author affiliations

Abstract

We investigate the phase organisation of thermotropic biaxial Gay–Berne (GB) mesogens yielding a biaxial nematic (Nb) phase upon endowing them with a central point dipole. We study the effects of changing the strength and orientation of the dipole on the phase behaviour, and in particular we examine, using molecular dynamics (MD) simulations, the possibility of improving the stability of the Nb phase. After mapping the boundaries of the Nb phase, we find that the strength of the embedded dipole is the parameter with the strongest influence on the mesogenic properties, while its orientation plays a minor role. For these central dipole systems, we find that the Nb phase organisation is stable only for mesogens with relatively weak dipole moments, while it disappears if electrostatic interactions become comparable in magnitude with dispersion interactions.

Graphical abstract: Mesogen polarity effects on biaxial nematics. Centrally located dipoles

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 Jul 2013, accepted on 20 Sep 2013 and first published on 24 Sep 2013


Article type: Paper
DOI: 10.1039/C3CP52970C
Citation: Phys. Chem. Chem. Phys., 2013,15, 19065-19072

  •   Request permissions

    Mesogen polarity effects on biaxial nematics. Centrally located dipoles

    L. Querciagrossa, M. Ricci, R. Berardi and C. Zannoni, Phys. Chem. Chem. Phys., 2013, 15, 19065
    DOI: 10.1039/C3CP52970C

Search articles by author

Spotlight

Advertisements