periphery. The first‐generation compounds (3 T‐p‐Ph‐C10 and 6 T‐p‐Ph‐C10) were synthesized by palladium‐catalyzed Sonogashira coupling reactions, whereas the higher generation products were synthesized by palladium‐catalyzed Suzuki coupling reactions in a divergent approach. The optical and electrochemical properties were investigated by UV/Vis absorption, fluorescence spectroscopy, and cyclic voltammetry
到第三代为止的三维(3D)π共轭树枝状低聚噻吩已在外围被三(癸氧基)苯基乙炔基尾部官能化。第一代化合物(3 T- p -Ph-C10和6 T- p-Ph-C10)是通过钯催化的Sonogashira偶联反应合成的,而更高一代的产品是通过钯催化的Suzuki偶联反应以发散的方式合成的。通过UV / Vis吸收,荧光光谱和循环伏安法研究了光学和电化学性质。结果表明,末端三(烷氧基)苯基乙炔基与分支的低聚噻吩核缀合,产生红移的吸收光谱和荧光光谱,并且相对于树枝状的低聚噻吩核减少了光学带隙。结构研究表明,超分子组织的类型与寡聚噻吩核的大小之间存在密切的关系。第一代化合物3 T- p -Ph-C10和6 T- p‐Ph‐C10以整体状态显示柱状相,这已通过二维广角X射线散射(2D WAXS)测量得到证实。自组装成柱状叠层主要归因于刚性噻吩核与柔性侧链之间的相分离,并通过共轭树枝状低聚噻吩单元之间的较