compounds, with one or two chelating positions, were used as H-acceptors in mixtures with carboxylic acids. The noncovalent complexes in question afforded calamitic mesomorphism (N, SmA and SmC) as well as a lamellar mesophase (SmCP). Additionally, the liquid crystalline behaviour of the new 2-hydroxy- and 2-aminopyridine compounds as pure materials is also discussed. Useful results concerning the design and
分析了使用
氢键设计
液晶的不同方法。选择具有一个或两个螯合位的 stilbazoles 和
吡啶化合物在与
羧酸的混合物中用作 H 受体。所讨论的非共价配合物提供了
棒状介晶(N、SmA 和 SmC)以及层状中间相(Sm
CP)。此外,还讨论了新的 2-羟基和 2-
氨基吡啶化合物作为纯材料的
液晶行为。报告了有关非共价
棒状和弯曲核
液晶的设计和稳定性的有用结果。为了诱导弯曲核
液晶顺序,必须控制 H 键周围的构象灵活性。通过红外光谱、光学显微镜、量热法、