標題: Electrophosphorescent polyfluorenes containing osmium complexes in the conjugated backbone
作者: Chien, Chen-Han
Liao, Song-Fu
Wu, Chen-Hao
Shu, Ching-Fong
Chang, Sheng-Yuan
Chi, Yun
Chou, Pi-Tai
Lai, Cheng-Hsuan
應用化學系
Department of Applied Chemistry
公開日期: 9-May-2008
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.
URI: http://dx.doi.org/10.1002/adfm.200701137
http://hdl.handle.net/11536/9339
ISSN: 1616-301X
DOI: 10.1002/adfm.200701137
期刊: ADVANCED FUNCTIONAL MATERIALS
Volume: 18
Issue: 9
起始頁: 1430
結束頁: 1439
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