Journal of Materials Chemistry p. 2031 - 2038 (2006)
Update date:2022-08-03
Topics:
Novotna
Kaspar
Hamplova
Glogarova
Lejcek
Kroupa
Pociecha
A new series of asymmetrical bent-shaped mesogens has been synthesised and their mesomorphic properties studied. All compounds exhibit the B2 (SmCP) phase. For some compounds we found a very low coercive field for switching to the saturated ferroelectric state and only one peak in the switching current. Due to the lack of SHG signal in the zero field state and the behaviour of the relaxation mode we cannot unambiguously assign ferroelectric or antiferroelectric character to the B2 phase observed. The observation of planar samples revealed a striped texture. Large optically active domains appear on very slow cooling, which are attributed to a non-homogeneous (twisted) in-plane structure imposed by surfaces. The twisted domains are suppressed under a critical electric field. A simple model of such a structure and its behavior in the electric field is proposed. The low temperature phase detected on further cooling is attributed to a crystalline-like smectic phase. The Royal Society of Chemistry 2006.
View MoreWUXI HONOR SHINE CHEMICAL CO.,LTD
Contact:+86-510-83593312
Address:No.1699 Huishan avenue,Huishan district,Wuxi ,Jiangsu,China,214177.(Wuxi Huishan Ecomonic Develop Zone )
Weifang Adde Economic And Trade Co.,LTD.
Contact:86-536-8885548
Address:Room 1402,Wanda Plaza B Block,No.958,Yuanfei Road,Kuiwen District
Changzhou Welton Chemical Co., Ltd,
Contact:0086-519-85910828,85920537,85912897
Address:No.8 Jinlong Road, Binjiang Park, Changzhou, Jiangsu, China.
Wuhan Soleado Technology Co.,Ltd.
Contact:86-2783341481 18971291927
Address:RM2405 Unit 1 Builing 1, Taiyin Tower, Changqing Road,Wuhan China
Contact:+86-(0)21-3770 9035
Address:Room 301, Building 2, Meijiabang Road 1508, Shanghai China
Doi:10.1002/ejoc.200500900
(2006)Doi:10.1039/P19820001841
(1982)Doi:10.1007/BF00955782
(1983)Doi:10.1016/S0022-1139(00)83930-5
(1989)Doi:10.1039/b517933e
(2006)Doi:10.1021/jo060300k
(2006)