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中文摘要：
用Suzuki偶合反应制备了一系列N-（2-乙基己基）-3，6-咔唑（Cz）与4,7-二（4-己基噻吩）-2，1，3-苯并噻二唑（DHTBT）的共聚物，研究该类聚合物的电化学、光学和电致发光性能．在薄膜状态下，即使DHTBT含量为1％的聚合物也发生了从Cz链段到DHTBT单元的有效的能量转移．光致发光光谱随着DHTBT含量的增加，从645nm红移至690nm．PCzDHTBT1获得了71％的薄膜光致发光效率．以该类聚合物为发光层的器件的EL光谱也随着DHTBT含量的增加从635nm红移至680nm．由PCzDHTBT15制作的结构为ITO／PEDOT：PSS／polymer／Ba／Al的器件得到了0．61％的外量子效率．
英文摘要：
A series of conjugated copolymers derived from N-（2-ethylhexyl）-3,6-carbazole （Cz） and 4,7-di（4-hexylthien-2-yl）-2,1,3-benzothiadiazole （DHTBT） were synthesized by Suzuki polycondensation. The electrochemical, optical and electroluminescent properties of these polymers were investigated. Efficient energy transfer from the Cz segment to the DHTBT unit occurred even if the DHTBT content in the copolymers was as low as 1 mol% in solid film. PL emission was red-shifted significantly from 645 to 690 nm with the increase in DHTBT content from 1 to 50 mol%. The highest PL efficiency in solid film was 71% for PCzDHTBT1. EL emission of devices with these polymers as active layer red-shifted from 635 to 680 nm when the DHTBT content increased from 1 mol% to 50 mol%. The highest external quantum efficiency was 0.61% for devices from PCzDHTBT15 with the device configuration of ITO/PEDOT： PSS/polymer/Ba/Al.
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