Electrophosphorescent polyfluorenes containing osmium complexes in the conjugated backbone

被引：79

作者：

Chien, Chen-Han ^{[1
]}

Liao, Song-Fu ^{[1
]}

Wu, Chen-Hao ^{[1
]}

Shu, Ching-Fong ^{[1
]}

Chang, Sheng-Yuan ^{[2
]}

Chi, Yun ^{[2
]}

Chou, Pi-Tai ^{[3
]}

Lai, Cheng-Hsuan ^{[3
]}

机构：

[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 300, Taiwan

[2] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan

[3] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

来源：

ADVANCED FUNCTIONAL MATERIALS | 2008年 / 18卷 / 09期

关键词：

D O I：

10.1002/adfm.200701137

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrophosphorescent copolymers have been synthesized by covalent bonding of a red-emitting osmium complex Os(bpftz), which contains two 3-trifluoromethyl-5-(4-tert-butyl-2-pyridyl)triazolate (bpftz) cyclometalated ligands, into the backbone of a bipolar polyfluorene (PF) copolymer. Employing these copolymers, a highly efficient red polymer light-emitting diode has been realised that has an external quantum efficiency of 18.0%, a maximum brightness of 38000 cd m(-2), and an emission centered at 618 nm. In addition, after incorporating appropriate amounts of green-emitting benzothiadiazole (BT) and the aforementioned Os(bpftz) into the bipolar PF, an efficient white-light electroluminescent polymer is obtained that displays simultaneous blue, green, and red emissions.

引用

页码：1430 / 1439

页数：10

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