Tschierske Carsten
Institute of Chemistry, Organic Chemistry, Martin-Luther University Halle-Wittenberg, Kurt-Mothes Str. 2, 06120 Halle/Saale, Germany.
Top Curr Chem. 2012;318:1-108. doi: 10.1007/128_2011_267.
The effects of perfluorinated and semiperfluorinated hydrocarbon units on the self-assembly of rod-like, disc-like, polycatenar, taper- and star-shaped, dendritic, and bent-core liquid crystalline (LC) materials is reviewed. The influence of fluorinated segments is analyzed on the basis of their contributions to the cohesive energy density, molecular shape, conformational flexibility, micro-segregation, space filling, and interface curvature. Though the focus is on recent progress in the last decade, previous main contributions, general aspects of perfluorinated organic molecules, and the basics of LC self-assembly are also briefly discussed to provide a complete overall picture. The main focus is on structure-property-relations and the use of micro-segregation to tailor mesophase morphologies. Especially polyphilic molecules with perfluorinated segments provide new modes of LC self-assembly, leading to ordered fluids with periodic multi-compartment structures and enhanced complexity compared to previously known systems.
综述了全氟和半全氟烃单元对棒状、盘状、多链状、锥形和星形、树枝状以及弯曲核液晶(LC)材料自组装的影响。基于氟化链段对内聚能密度、分子形状、构象灵活性、微相分离、空间填充和界面曲率的贡献,分析了其影响。尽管重点是过去十年的最新进展,但也简要讨论了先前的主要贡献、全氟有机分子的一般方面以及液晶自组装的基础知识,以提供一个完整的整体图景。主要重点是结构-性能关系以及利用微相分离来定制中间相形态。特别是具有全氟链段的多亲性分子提供了液晶自组装的新模式,导致形成具有周期性多隔室结构且与先前已知体系相比复杂性增强的有序流体。