Green-Emitting PPE−PPV Hybrid Polymers: Efficient Energy Transfer across the <i>m</i>-Phenylene Bridge
作者:Qinghui Chu、Yi Pang、Liming Ding、Frank E. Karasz
DOI:10.1021/ma034028h
日期:2003.6.1
spectroscopy further confirms the structural regularity of the polymers. The degree of polymerization (DP) is in the range 27−76. Resulting from efficient energy transfer from PPE block to PPV block, the PPV/PPE hybrid polymer emits light with the same color as poly[(m-phenylenevinylene)-alt-(p-phenylenevinylene)], 1. LED devices of ITO/PPV/7/Ca and ITO/PEDOT/7/Ca configurations have been fabricated,
通过使用Heck型偶联和Horner-Wadsworth-Emmons缩合反应的组合合成由聚苯撑乙烯撑(PPV)和聚苯撑乙炔撑(PPE)嵌段组成的新型π共轭聚合物(7)。这些聚合物具有明确的化学结构(-Ph-C⋮C-Ph-C⋮C-Ph-C C-Ph-C C-)n,其中苯环在间位和对位交替连接。13 C NMR光谱进一步证实了聚合物的结构规则性。聚合度(DP)在27-76的范围内。从PPE块有效的能量转移到PPV块产生,该PPV / PPE杂化聚合物发射具有相同颜色的聚[(米-phenylenevinylene)-alt-(对-亚苯基亚乙烯基)],1。已经制造出ITO / PPV / 7 / Ca和ITO / PEDOT / 7 / Ca配置的LED器件,其发出绿色EL发射,其前者的外部量子效率为0.15%,后者的外部量子效率为0.32%。