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Issue 22, 2016
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Pseudo-polar tilted smectic phases exhibited by bent-core hockey stick shaped molecules

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Abstract

We report experimental and theoretical studies on two new achiral fluid lamellar phases exhibited by bent-core hockey stick shaped molecules. The packing of these bent-core hockey stick shaped molecules in the layers leads to a pseudo-polar order in these tilted smectic phases. An anticlinic SmCA type stacking of the pseudo-polar layers is observed in the higher temperature smectic phase, while in the lower temperature phase the difference in the azimuthal angles of the tilt directions in successive layers is between zero and π with a randomized tilt organization between the successive layers. The randomness arises due to the sign degeneracy of the azimuthal angle difference of the tilt directions in successive layers. Both of these smectic phases show a strong electro-optic response which can be exploited for potential applications.

Graphical abstract: Pseudo-polar tilted smectic phases exhibited by bent-core hockey stick shaped molecules

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Article information


Submitted
25 Feb 2016
Accepted
25 Apr 2016
First published
25 Apr 2016

Soft Matter, 2016,12, 4960-4966
Article type
Paper

Pseudo-polar tilted smectic phases exhibited by bent-core hockey stick shaped molecules

D. Malkar, B. K. Sadashiva and A. Roy, Soft Matter, 2016, 12, 4960
DOI: 10.1039/C6SM00493H

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