A ferroelectric liquid-crystalline polymeric composition
申请人:IDEMITSU KOSAN COMPANY LIMITED
公开号:EP0310081A2
公开(公告)日:1989-04-05
The liquid-crystalline polymeric composition of the invention comprises (A) a non-liquid-crystalline polymeric compound and (B) a low-molecular liquid-crystalline compound each having a proton donor and/or a proton acceptor in the molecular structure and the low-molecular compound has a chiral smectic C phase. By virtue of these functional groups forming hydrogen bonds between the components, the liquid-crystalline polymeric composition of the invention is not a mere blend of the components liable to cause phase separation but is imparted with greatly increased stability and uniformity of the blend as well as responsivity of high speed.
本发明的液晶聚合物组合物包括(A)非液晶聚合物化合物和(B)低分子液晶化合物,每种化合物的分子结构中都有质子供体和/或质子受体,且低分子化合物具有手性 Smectic C 相。由于这些官能团在各组分之间形成氢键,本发明的液晶聚合物组合物不再是容易导致相分离的单纯组分混合物,而是大大提高了混合物的稳定性和均匀性以及高速响应性。
US4988460A
申请人:——
公开号:US4988460A
公开(公告)日:1991-01-29
Forming Stereogenic Centers in Acyclic Systems from Alkynes
作者:Roxane Vabre、Biana Island、Claudia J. Diehl、Peter R. Schreiner、Ilan Marek
DOI:10.1002/anie.201504756
日期:2015.8.17
This method provides access to functionalized products in which three new carbon–carbon bonds and two to three stereogenic centers, including a quaternary one, were created in acyclicsystems in a single‐pot operation from simple alkynes.