三角四方拼砌的复杂液晶蜂窝结构设计研究

Thiophene Bola amphiphiles with longer rigid rod core will be designed by introducing conjugated units such as oligothiophene,thiophene alkynyl, thiophene double bond etc into the rod core. Study will be focused on the complex transitional liquid crystalline structures based on these compounds. Complex and larger 2D honeycomb LC phases with randomized or quasi-periodic triangle/square tilings (or at least their close approximates) and eventually also LC phases with quasiperodic 2D tiling patterns composed of triangular and square tiles or involving rhombs, as in the Penrose quasiperiodic 2D-tiling are envisaged to be achieved. Our study would provide model systems in which the mechanisms and pathway of the transition from chaos to complexity could be studied in detail for self-assembled systems，promote the understanding of the nature disciplines, the development of the basic disciplines of molecular selforganization, and also the development of nanotechnology, organic optoelectronic components etc.

通过将寡聚噻吩、噻吩炔及噻吩双键等共轭单元引入到刚性棒状核中的方式，设计合成含较长刚硬核的噻吩波拉两亲分子，研究它们的自组装蜂窝液晶结构，重点研究从三角蜂窝柱相到四方蜂窝柱相转变过程中出现的复杂过渡液晶相结构。预计可获得由三角、四方以不同方式组装成的更大更复杂的2D蜂窝结构，2D、3D准晶结构以及类似彭罗斯的由菱形柱体组成的液晶性准晶结构。相关的研究必将提供系统研究从混乱到复杂组装转变的机理和路径. 推动人们对自然界的认识，推动相关学科的发展，同时也将对纳米技术，有机光电子元件的研究起到积极的推动作用.

本项目完成了刚硬核为二联噻吩， 四联噻吩，六联噻吩， 噻吩烯，噻吩炔系列波拉两亲化合物的合成及液晶性质的系统研究。考察侧链数目，位置，是否分枝等结构因素对各系列化合物液晶性质及其他组装性能的影响， 获得了三，四，五，六方蜂窝结构及彩虹状的长方柱相结构， 以及三维的立方相结构，进一步证明了Bola类化合物强大的自组装性能， 为认识从混乱到复杂组装转变的机制和路径提供了系统的实验数据和理论。为后续光电磁纳米材料的研究打下了基础，本项目发表论文36篇，其中SCI论文16 篇，申请专利3项。