Antiferroelectric liquid crystal from a banana-shaped achiral molecule
- Authors
- Lee, CK; Kim, JH; Choi, EJ; Zin, WC; Chien, LC
- Issue Date
- Dec-2001
- Publisher
- TAYLOR & FRANCIS LTD
- Citation
- LIQUID CRYSTALS, v.28, no.12, pp 1749 - 1754
- Pages
- 6
- Journal Title
- LIQUID CRYSTALS
- Volume
- 28
- Number
- 12
- Start Page
- 1749
- End Page
- 1754
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/27046
- DOI
- 10.1080/02678290110078711
- ISSN
- 0267-8292
1366-5855
- Abstract
- A new banana-shaped achiral compound, 1,3-phenylene bis[4-(3-fluoro-4-n-octyloxyphenyliminomethyl) benzoate] ( PBFOB) was synthesized and its antiferroelectric liquid crystallinity determined. The PBFOB was characterized by differential scanning calorimetry, X-ray diffractometry in the small and wide angle regions, and polarizing optical microscopy; its polarization and antiferroelectric properties were also investigated. The presence of a lateral fluoro-substituent in the banana-shaped achiral molecules containing a Schiff's base mesogen induced a decrease in melting temperature and formation of the switchable smectic B-2 phase in the melt. The spontaneous polarization for PBFOB was about 250 nC cm(-2) and the polarization of this phase switched on the reversal of an applied electric field.
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