New series of non-symmetric bent-core compounds with a terminal carboxylic function as well as its benzyl esters and pentafluorophenyl esters have been synthesised. For most pentafluorophenylesters and for a benzylester with fluorine atoms in the ortho positions to the alkoxy chain different types of columnar ribbon phases (ColrPA and ColobPA) and a polar smectic SmCPA phase have been observed. Both the columnar and the smectic phases show antiferroelectric switching behaviour. Based on these functionalised banana-shaped molecules the first example of an amphiphilic bent-core molecule with a terminal 1-acylaminopropane-2,3-diol unit and DAB derived dendrimers of the first as well as the second generation have been synthesised and their physical properties have been investigated. Neither the diol-terminated bent-core molecule nor the dendrimers show any electrooptical response. Dendrimers with long aliphatic chains as well as the amphiphile form non-polar bilayer smectic phases, whereas dendrimers with shorter chains organise into a mesophase with a 2D lattice (Col). It seems that hydrogen bonding at the periphery of the bent-core units is unfavourable for the formation of polar smectic phases.
                                    我们合成了一系列具有末端羧基功能的非对称弯曲核化合物及其苄酯和
五氟苯基酯。对于大多数
五氟苯酯和
氟原子位于烷氧基链正交位置的苄酯,观察到了不同类型的柱状带状相(ColrPA 和 ColobPA)和极性 Smectic SmCPA 相。柱状相和谱状相都显示出反
铁电性开关行为。在这些官能化香蕉形分子的基础上,合成了第一例具有末端 1-酰基
氨基
丙烷-2,3
-二醇单元的两亲性弯曲核分子和 
DAB 衍生的第一代和第二代树枝状聚合物,并对它们的物理性质进行了研究。二醇端弯曲核分子和树枝状聚合物都没有显示出任何电光响应。具有长脂肪族链的树枝状聚合物和两性化合物形成了非极性双层涂抹相,而具有较短链的树枝状聚合物则组织成具有二维晶格的介相(Col)。看来,弯曲核单元外围的氢键不利于形成极性共晶相。