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Issue 10, 2011
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To tilt or not to tilt? Kinetics of structure formation in a discotic liquid crystal

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Abstract

The distinctly different unit cells, dipolar dynamics and viscoelastic properties of the two columnar phases in a dipole-functionalized discotic liquid crystal (mono-iodine hexa-peri-hexabenzocoronene) were employed as fingerprints and allowed investigating the kinetic pathways towards formation of the crystalline phase. X-Ray scattering, dielectric spectroscopy and rheology revealed a nucleation and growth process. The transformation involved coexisting unit cells composed from columns with either tilted or non-tilted disks and the absence of intermediate states. The transition can be described as a transformation from a structurally weakly ordered but dipolar well-ordered liquid crystalline phase to a structurally well-ordered but dipolar disordered crystalline phase.

Graphical abstract: To tilt or not to tilt? Kinetics of structure formation in a discotic liquid crystal

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Article information


Submitted
04 Feb 2011
Accepted
15 Mar 2011
First published
07 Apr 2011

Soft Matter, 2011,7, 4680-4689
Article type
Paper

To tilt or not to tilt? Kinetics of structure formation in a discotic liquid crystal

C. Grigoriadis, N. Haase, H. Butt, K. Müllen and G. Floudas, Soft Matter, 2011, 7, 4680
DOI: 10.1039/C1SM05188A

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