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中文摘要：
设计并合成了一种基于咔唑的新型的磷光主体材料，即9-（6-（9-咔唑基）己基）咔唑（hCP），对其结构及性能进行了表征．研究结果表明：hCP分子中两个咔唑与烷基链是非共平面的，由于长烷基链的缠绕，因而具有较高的三线态能级（3．01eV）和较高的玻璃化温度（93℃）：以hCP为主体材料，与绿光磷光染料三（2-苯基吡啶）合铱（Ir（ppy）3）掺杂作为发光层，制备了磷光电致发光器件，其器件的最大电流效率为15．1cd·A-1，相对于4，41-N，N1-二咔唑基联苯（CBP）为主体材料的参考器件，显著提高了34．8％．
英文摘要：
A new phosphorescent host material based on 9-[6-（9H-carbazol-9-yl）hexyl]-9H-carbazole （hCP） was designed and synthesized and its structure and properties were characterized. These investigations indicated that hCP possessed a twisted rigid structure, with the two carbazole units in a non-coplanar conformation leading to a higher triplet energy level （3.01 eV）. hCP also possessed a high glass transition temperature （93℃）. Electroluminescent devices were fabricated by doping the hCP host with the green- phosphorescent fac-tris（2-phenylpyridine）iridium（Ⅲ） （Ir（ppy）3） as the light-emitting layer. Compared with devices employing the typical （4,4＇-N,N＇-dicarbazole）biphenyl） （CBP） as a host, the hCP host showed a 34.8% increase of current efficiency to 15.1 cal. A-1.
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