苯基嘧啶类铁电液晶及手性掺杂剂.PDF

2005 68 w014 * ( 221008) Clark Lagerwall Ferroelectric Liquid Crystals and Chiral Dopants Containing Phenylpyrimidine Units * Yang Haitao, Wang Xingyong (Institute of Chemical Technology, China University of Mine and Technology, Xuzhou 221008) Abstract Study on the display application of ferroelectric liquid crystals materials has been draw much attention from all over the world since the working principle of surface stabilized ferroelectric liquid crystal was described by Clark and Lagerwall. In this paper, the progress in novel ferroelectric liquid crystals and chiral dopants containing phenylpyrimidine ring in the backbone were summarized. It was focused on the influence of various chiral centers and end groups on the spontaneous polarization, response time and transition temperatures. Key words Ferroelectric liquid crystals, Chiral dopants, Pyrimidine, Spontaneous polarization 1975 Mayer Liebert (FLC) 1980 Clark Largerwall (SSFLC) [1] (STN)23 (τ) PS η θ A (SA) C (SC*) 26 *E-mail: xywang123@163.com 2004-04-08 2004-07-20 2005 68 w014 A C