A series of star-shaped oligothiophene-attached and fused triphenylenes was synthesized. The synthesis was first conducted by six-fold Pd-catalyzed Stille cross-coupling reactions to yield the hexakis-oligothiophenes substituted triphenylenes TTP, TTP1, TTP2 and TTP3 and then followed by successful oxidative cyclodehydrogenation of TTP1 to generate the thiophene-fused triphenylene compound TTP1-C with an extended core. Their optical, electrochemical, thermal properties and self-assembly behaviors were investigated and the structure–property relationships were established, which clearly demonstrated the influence of the length of the peripheral oligothiophene units and the core structure on the electronic nature and solid-state packing of these star-shaped disc-like molecules.
合成了一系列星形低聚
噻吩连接和稠合的苯并
菲。该合成首先通过六重
钯催化的 Stille 交叉偶联反应进行,生成六低聚
噻吩取代的苯并
菲 TTP、
TTP1、
TTP2 和
TTP3,然后成功地对
TTP1 进行氧化环化脱氢,生成
噻吩稠合苯并
菲化合物
TTP1 -C 具有扩展核心。研究了它们的光学、电
化学、热性能和自组装行为,并建立了结构-性能关系,清楚地证明了外围低聚
噻吩单元的长度和核心结构对电子性质和固态堆积的影响这些星形盘状分子。