Liquid-crystalline Perylene Bisimide J-Aggregates

带有介晶bay取代基的二萘嵌苯双酰亚胺染料的氢键定向自组装提供了一类新的液晶材料，其适合于在用于光子学应用的薄膜器件中利用二萘嵌苯双酰亚胺J-聚集体的优异性质（强荧光、长程激子传输、高光稳定性）。为了实现这一目标，定制的苝双酰亚胺将合成自组装在柱状，近晶和双连续立方中间相。它们的液晶特性将通过偏光显微镜、差示扫描量热法以及SAXS/WAXS X射线研究进行详细表征。两种互补介晶化合物之间的进一步超分子相互作用将被用来控制相和有序行为以及中间相材料的功能。通过将贫电子的J-聚集的二萘嵌苯双酰亚胺与互补的富电子的共轭低聚物如寡聚噻吩和寡聚亚苯基亚乙烯基结合，一类新的超分子p-n-异质结将变得容易获得。功能构建块的独特排列将导致可以传输激子以及电子/空穴载流子的纳米结构材料。

Hydrogen-bond-directed self-assembly of perylene bisimide dyes bearing mesogenic bay substituents affords a new class of liquid crystalline materials which are suited to exploit the superb properties of perylene bisimide J-aggregates (intense fluorescence, long range exciton transport, high photostability) in thin film devices for photonics applications. Towards this goal tailored perylene bisimides will be synthesized which self-assemble in columnar, smectic and bicontinuous cubic mesophases. Their liquid-crystalline properties will be characterized in great detail by polarization microscopy, differential scanning calorimetry as well as SAXS/WAXS X-ray studies. Further supramolecular interactions between two complementary mesogenic compounds will be utilized to control the phase and ordering behavior as well as the functionality of the mesophase materials. By combining electron poor J-aggregated perylene bisimides with complementary electron rich conjugated oligomers such as oligothiophenes and oligophenylenevinylenes a new class of supramolecular p-n-heterojunctions will become accessible. The unique arrangement of the functional building blocks will lead to nanostructured materials that may transport excitons as well as electron/hole carriers.