Electrophosphorescent Polyfluorenes Containing Osmium Complexes in the Conjugated Backbone
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 1430-1439 |
| Journal / Publication | Advanced Functional Materials |
| Volume | 18 |
| Issue number | 9 |
| Online published | 29 Apr 2008 |
| Publication status | Published - 9 May 2008 |
| Externally published | Yes |
Link(s)
Abstract
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 38 000 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.
Citation Format(s)
Electrophosphorescent Polyfluorenes Containing Osmium Complexes in the Conjugated Backbone. / Chien, Chen-Han; Liao, Song-Fu; Wu, Chen-Hao; Shu, Ching-Fong; Chang, Sheng-Yuan; Chi, Yun; Chou, Pi-Tai; Lai, Cheng-Hsuan.
In: Advanced Functional Materials, Vol. 18, No. 9, 09.05.2008, p. 1430-1439.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
