Regioregular Head-to-Tail Poly(4-alkylquinoline)s: Synthesis, Characterization, Self-Organization, Photophysics, and Electroluminescence of New n-Type Conjugated Polymers
作者:Yan Zhu、Maksudul M. Alam、Samson A. Jenekhe
DOI:10.1021/ma0348021
日期:2003.12.1
observed for the P4AQs as emissive materials. A large improvement in performance of poly(2-methoxy-5-(2‘-ethyl-hexyloxy)-p-phenylenevinylene)-based light-emitting diodes (a luminance of up to 700 cd/m2 and an external quantum efficiency of up to 3.0%) was observed when the P4AQs were used as the electron transport materials. The new regioregular poly(4-alkylquinoline)s are promising n-type conjugated
合成,表征并表征了五种具有100%头尾区域规则性的聚(4-烷基喹啉-2,6-二基)s(P4AQs),作为聚合物发光二极管中的发射和电子传输材料。有机溶剂(氯仿,四氢呋喃,二氯甲烷等)可溶的聚(4-烷基喹啉)具有可逆的电化学还原,其电子亲和力(2.6 eV)与烷基链长无关。X射线衍射研究表明,规则型P4AQ的溶液流延膜具有自组织的层状结构,链间π堆积距离为3.9-4.1Å,层间d-间距线性变化,从丁基的13.4Å到十三烷基侧链的22.3Å线性变化。新的聚(4-烷基喹啉)在稀氯仿溶液中发射423-426 nm的蓝光,在固态时发射542-557 nm的黄光。对于作为发光材料的P4AQ,观察到黄色电致发光,亮度高达86 cd / m 2,外部量子效率高达0.6%。聚(2-甲氧基-5-(2'-乙基-己氧基)-对亚苯基亚乙烯基)基发光二极管的性能大大提高(亮度高达700 cd / m 2)当P4AQs