芴-苯并噻二唑-苯胺类共聚物的合成与发光性能
作者： Caihong WEI , Jianhua ZOU , Qiliang CHEN , Wei YANG , Junbiao PENG
DOI: 10.3724/SP.J.1105.2009.01070
关键词:
摘要: 用Suzuki缩聚反应分别将窄带隙单元-苯并噻二唑-二苯胺（DPABT）和苯并噻二唑-三苯胺（TPABT）引入聚芴主链,合成了共聚物PF-DPABT和PF-TPABT,并比较了共聚物的发光性能.随着窄带隙单元含量的增加,其特征发射逐渐增强,说明发生了从聚合物主体单元到窄带隙单元有效的能量转移.两种共聚物在低窄带隙单元含量（1mol%）下的电致发光光谱仅出现窄带隙单元的特征发射,PF-DPABT共聚物为650～680nm之间的饱和红光,而PF-TPABT共聚物为590～610nm之间的橙红光,聚芴主体单元的发射被完全淬灭,说明与光致发光过程相比,电致发光过程中的能量转移更完全.基于共聚物PF-DPABT-1及PF-TPABT-5器件的最大外量子效率分别为1.3%和2.0%,器件结构为ITO/PEDOT：PSS/polymer/Ba/Al,是一类有希望的红光材料.
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