The smectic phase temperature range was dramatically reduced or disappeared, and the nematic phase temperature range was enlarged because of the introduction of lateral single fluorine. 引入侧向氟取代基后近晶相温度范围明显减小或者消失,向列相温度范围增加。
On smectic phase structure of thermotropic liquid crystalline polyesters 热致型液晶聚合物的近晶相结构研究
Comparing their mesomorphic properties with those of corresponding 4,4 ′-bis-( trans-4-n-alkylcyclohexyl) biphenyl liquid crystals, smectic phase range can be dramatically reduced, nematic phase range is enlarged by introducing lateral fluorine. 与相应的4,4′-双-(烷基环己基)联苯类液晶相比,引入侧向氟取代基以后近晶相温度区间明显减小,向列相温度区间增加。
DSC analyses show that these compounds have a broad nematic range and the substitute of lateral fluorine can suppress the smectic phase effectively, thus broaden the nematic phase. DSC分析表明产物具有较宽的液晶相区,引入侧向氟原子可以有效地抑制近晶相,从而扩大向列相温区。
Relaxation Phenomena of Smectic A Phase of Liquid Crystals 近晶A相液晶的弛豫现象
A terminal end hydrogen atom will greatly damage mesomorphic properties, especially smectic C phase. 末端一个氢原子对中介相尤其是近晶C相的稳定性破坏很大。
The simplest ferroelectric liquid crystal phase is the smectic C~ phase. 最简单的铁电液晶是近晶C相(碟状近晶c相)。
It is found that the compound 3 went into liquid crystal phase when heated to their T m. The typical smectic phase and nematic phase texture can be observed. 发现化合物3加热至各自的熔点以上都能形成液晶态,在液晶态可以观察到近晶相和向列相的典型织构。
Chiral compounds chiral industry design and synthesis of novel liquid crystalline copolyesters with chiral smectic C phase 新型手性近晶C相液晶共聚酯的设计与合成
Synthesis and properties of smectic C phase shish-kebab type liquid crystalline copolymers 手性近晶C相串型液晶共聚物的合成与性能
Preliminary studies indicated that hydrogen bonding was one of the main driving forces for the formation of thermotropic smectic phase of APMT-n. 初步研究表明氢键是APMT-n热致近晶相的主要驱动力之一。
The results showed that the polymer exhibited a smectic phase and a nematic phase transition and showed complicated crystalline behavior during the heating process. 结果显示,该聚合物在受热过程中表现出了较为复杂的相转变过程,其中明显存在近晶相和向列相两种液晶态。