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Original Articles

Phase transition behaviour of novel Y‐shaped liquid crystal oligomers

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Pages 605-609 | Received 26 Aug 2005, Accepted 07 Jan 2006, Published online: 20 Feb 2007
 

Abstract

We have designed novel liquid crystal oligomers in which three mesogenic units are connected via 3,5‐dihydroxybenzoic acid. 4‐Cyanobiphenyl‐4′‐yl 3,5‐bis{6‐[4‐(5‐octylpyrimidin‐2‐yl)phenyloxy]hexyloxy}benzoate and 4‐(5‐octylpyrimidine‐2‐yl)phenyl 3,5‐bis{6‐[4‐(5‐octylpyrimidine‐2‐yl)phenyloxy]hexyloxy}benzoate have been prepared, and their physical properties investigated by optical microscopy and differential scanning calorimetry. The Y‐shaped liquid crystal oligomers were found to show a direct phase transition from isotropic liquid to anticlinic SmC (SmCanti) phase.

Acknowledgements

This work was partly supported by Aomori Prefecture Collaboration of Regional Entities for the Advancement of Technological Excellence, JST and a Grant‐in‐Aid for Scientific Research from the Ministry of Education, Science, Sports, Culture and Technology in Japan (No. 15550156).

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