TY - JOUR
T1 - Electrophosphorescent Polyfluorenes Containing Osmium Complexes in the Conjugated Backbone
AU - Chien, Chen-Han
AU - Liao, Song-Fu
AU - Wu, Chen-Hao
AU - Shu, Ching-Fong
AU - Chang, Sheng-Yuan
AU - Chi, Yun
AU - Chou, Pi-Tai
AU - Lai, Cheng-Hsuan
PY - 2008/5/9
Y1 - 2008/5/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=44249084035&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-44249084035&origin=recordpage
U2 - 10.1002/adfm.200701137
DO - 10.1002/adfm.200701137
M3 - RGC 21 - Publication in refereed journal
SN - 1616-301X
VL - 18
SP - 1430
EP - 1439
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 9
ER -