Unusual properties of a bent-core liquid-crystalline fluid
Unusual properties of a bent-core liquid-crystalline fluid
复制标题
DOI：
10.1039/b808283a
复制
发表时间：
2009-01-01
期刊：
影响因子：
3.4
通讯作者：
Goodby, John W.
中科院分区：
文献类型：
--
作者：
Goertz, Verena;Southern, Christopher;Goodby, John W.
在我们对一类非手性邻-核双-（苯基）恶二唑衍生物的研究中，我们观察到了一些不寻常的邻-核相性质。这些包括证据的隔离成领域的相反的手和集群的形成，双相双轴性，和强烈的动力学相行为，这导致显示独特的细丝结构在新的秩序开始。我们认为，一个偏离的calamitic分子形状与相当大的横向偶极子的组合导致一个不寻常的强度和组合的分子相互作用，因此，这些材料需要被认为是波动和动态变化的，多层次的流体。
In our investigations of a family of achiral bent-core bis-(phenyl)oxadiazole derivatives, we observed some unusual properties of the nematic phase. These include evidence of segregation into domains of opposite handedness and the formation of clusters, nematic phase biaxiality, and a strongly kinetically governed phase behaviour, which leads to the display of unique filament structures at the onset of new order. We suggest that the combination of a deviant calamitic molecular shape with a considerable transverse dipole leads to an unusual strength and combination of molecular interactions, and as a consequence these nematic materials need to be considered as fluctuating and dynamically changing, multi-hierarchical fluids.