Journal
LIQUID CRYSTALS
Volume 39, Issue 1, Pages 99-103Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2011.628704
Keywords
blue phase; liquid crystal; oxadiazole
Funding
- National Science Foundation of China [60878047, 61108065]
- Fundamental Research Funds for the Central Universities [WM1014015]
- Research Foundations of ECUST [yk0157125]
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Five bent-shaped molecules derived from the 1,3,4-oxadiazole core are synthesised and doped into chiral nematic liquid crystals to induce the blue phase. The effects of their terminal chain length on the blue phase range are compared and analysed experimentally. The results show that the blue phase range is significantly influenced by terminal chain length, and the widest range could be obtained in the case that the chain length is neither too long nor too short. In addition, it is also found that the mechanism of a blue phase induced by bent-shaped molecules is mainly related with its geometry, no matter whether a liquid crystal phase exists or not.
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