一种基于咔唑的新型磷光主体材料的合成及光电性能

doi:10.3866/PKU.WHXB201303281

物理化学学报 >> 2013, Vol. 29 >> Issue (06): 1351-1356.doi: 10.3866/PKU.WHXB201303281

一种基于咔唑的新型磷光主体材料的合成及光电性能

杨婷婷^1,2, 许慧侠^1,2, 王华^1,2, 苗艳勤^1,2, 杜晓刚^1,2, 景姝^1,2, 许并社^1,2

1 太原理工大学材料界面科学与工程教育部重点实验室, 太原 030024;
2 太原理工大学新材料工程技术中心, 太原 030024

收稿日期:2012-10-22 修回日期:2013-03-28 发布日期:2013-05-17
通讯作者: 许慧侠 E-mail:xuhuixia0824@163.com
基金资助:
教育部长江学者与创新团队发展项目(IRT0972); 国家国际科技合作专项(2012DFR50460); 国家自然科学基金(21071108, 60976018,21101111, 61274056, 61205179); 山西省自然科学基金(2010021023-2, 2011021022-2)和山西省科技攻关项目(20120321019)资助

Synthesis and Photoelectric Properties of a New Phosphorescent Host Material Based on Carbazole

YANG Ting-Ting^1,2, XU Hui-Xia^1,2, WANG Hua^1,2, MIAO Yan-Qin^1,2, DU Xiao-Gang^1,2, JING Shu^1,2, XU Bing-She^1,2

1 Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, P. R. China;
2 Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China

Received:2012-10-22 Revised:2013-03-28 Published:2013-05-17
Supported by:
The project was supported by the Program for Changjiang Scholar and Innovation Research Team in University, China (IRT0972), International Science & Technology Cooperation Program of China (2012DFR50460), National Natural Science Foundation of China (21071108, 60976018, 21101111, 61274056, 61205179), Natural Science Foundation of Shanxi Province, China (2010021023-2, 2011021022-2), Key Scientific and Technological Project of Shanxi Province, China (20120321019).

摘要/Abstract

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(3.01 eV)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15.1 cd·A^-1, 相对于4,4'-N,N'-二咔唑基联苯(CBP)为主体材料的参考器件, 显著提高了34.8%.

关键词: 咔唑, 有机磷光电致发光二极管, 主体材料

Abstract:

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 cd·A^-1.

Key words: Carbazole, Phosphorescence organic light emitting device, Host material

MSC2000:

O644

杨婷婷, 许慧侠, 王华, 苗艳勤, 杜晓刚, 景姝, 许并社. 一种基于咔唑的新型磷光主体材料的合成及光电性能[J]. 物理化学学报, 2013, 29(06): 1351-1356.

YANG Ting-Ting, XU Hui-Xia, WANG Hua, MIAO Yan-Qin, DU Xiao-Gang, JING Shu, XU Bing-She. Synthesis and Photoelectric Properties of a New Phosphorescent Host Material Based on Carbazole[J]. Acta Phys. -Chim. Sin., 2013, 29(06): 1351-1356.

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一种基于咔唑的新型磷光主体材料的合成及光电性能

Synthesis and Photoelectric Properties of a New Phosphorescent Host Material Based on Carbazole

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