Ferroelectric switching in a novel bent-shaped mesogen having two non-mesogenic units linked by an alkylene spacer |
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Authors: | Veena Prasad D. S. Shankar Rao S. Krishna Prasad |
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Affiliation: | Universidad de Chile, Facultad de Ciencias Químicas y Farmacéuticas, Casilla 233, Santiago 1, Chile |
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Abstract: | We report the synthesis, X-ray diffraction results and electro-optical switching measurements for a bent-shaped mesogen having two non-mesogenic units linked by an alkylene spacer. The novelty of the molecular structure lies in the carbonyl group of the ester linkage being directly attached to the spacer unit, unlike for banana-shaped molecules reported so far, in which it is one oxygen atom away from the spacer or the central aromatic unit. The compound shows two mesophases: the high temperature mesophase is a tilted smectic phase showing ferroelectric switching characteristics; the low temperature phase is more highly ordered with textural features similar to that of the B3 banana phase. |
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