Antiferroelectric liquid crystal from bent-core molecule with vinyl end group
- Authors
- Lee, CK; Kwon, SS; Kim, TS; Shin, ST; Chow, H; Choi, EJ; Kim, SY; Zin, WC; Kim, DC; Chien, LC
- Issue Date
- 20-Aug-2004
- Publisher
- KOREAN CHEMICAL SOC
- Keywords
- banana-shaped liquid crystal; switchable smectic C; spontaneous polarization; antiferroelectric properties; bent-core molecule
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.25, no.8, pp 1171 - 1176
- Pages
- 6
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 25
- Number
- 8
- Start Page
- 1171
- End Page
- 1176
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/26999
- ISSN
- 0253-2964
1229-5949
- Abstract
- Three banana-shaped achiral compounds, 4-chloro-1,3-phenylene bis [4-{4-(undecenyloxy)phenyl imino-methyl}benzoate] derivatives, were synthesized with variation of a substituent (x=H, F, Cl); their antiferroelectric properties are described. The smectic mesophases, including a switchable chiral smectic C(Sm C*) phase, were characterized by differential scanning calorimetry, polarizing optical microscopy, triangular wave method, and X-ray diffractometry. The presence of vinyl groups at the terminals of linear side wings in the banana-shaped achiral molecules induced a decrease in melting temperature and formation of the switchable Sm C* phase in the melt. The smectic phase having a lateral fluorine-substituent at 3-position of the Schiff's base moiety showed antiferroelctric switching, and the value of spontaneous polarization on reversal of an applied electric field was 250 nC/cm(2).
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - ETC > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/26999)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.