Exceedingly efficient deep-blue electroluminescence from new anthracenes obtained using rational molecular design

被引:260
|
作者
Kim, Soo-Kang [1 ]
Yang, Bing [2 ]
Ma, Yuguang [2 ]
Lee, Ji-Hoon [3 ]
Park, Jong-Wook [1 ]
机构
[1] Catholic Univ, Display Res Ctr, Dept Chem, Puchon 420743, South Korea
[2] Jilin Univ, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China
[3] Chungju Natl Univ, Dept Polymer Sci & Engn, Chungju 380702, South Korea
关键词
D O I
10.1039/b805062g
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
9,10-Bis(3',5'- diphenylphenyl) anthracene [MAM], 9-(3',5'-diphenylphenyl)-10-(3''', 5'''diphenylbiphenyl- 4 ''-yl) anthracene [MAT], and 9,10-bis(3''',5'''-diphenylbiphenyl-4'-yl) anthracene [TAT] were newly synthesized through boration and Suzuki aryl-aryl coupling reactions. We have demonstrated that the EL performance of blue-light emitters can be optimized and improved by varying the chemical structures of the side groups. In the thin film state, the three materials exhibit PLmax values in the range of 439-445 nm. MAM, MAT, and TAT all have high T-g values above 120 degrees C; TAT has the highest T-g value, above 150 degrees C. This is twice as high as that of DPVBi (64 degrees C) and is much higher than that of MADN (120 degrees C) as well. It also exhibits excellent color coordinates (0.156, 0.088), which are very close to the NTSC blue standard, and an external quantum efficiency of 7.18%, twice that of MADN, which are the best reported results for deep-blue OLED emitters.
引用
收藏
页码:3376 / 3384
页数:9
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