TY - JOUR
T1 - Design, synthesis and properties of triple-color hyperbranched polymers derived from poly(9,9-dioctylfluorene) with phosphorescent core tris(1-phenylisoquinoline)iridium
AU - Sun, Jing
AU - Wang, Hua
AU - Yang, Tao
AU - Zhang, Xinwen
AU - Li, Jie
AU - Zhang, Tiaomei
AU - Wu, Yuling
AU - Chen, Weihua
AU - WONG, Wai Yeung
AU - Xu, Bingshe
N1 - Funding Information:
This work was financially supported by Program for New Century Excellent Talents in University of Ministry of Education of China ( NCET-13-0927 ); National Natural Scientific Foundation of China ( 61205179 , 61307030 , 61307029 ); Shanxi Provincial Key Innovative Research Team in Science and Technology ( 2012041011 ); Natural Science Foundation of Shanxi Province ( 2015021070 ).
PY - 2016/2/1
Y1 - 2016/2/1
N2 - A series of triple-color hyperbranched polymers based on poly(9,9-dioctylfluorene) (PF) were designed and synthesized, in which phosphorescent tris(1-phenylisoquinoline)iridium(Cyrillic capital letter sha) (Ir(piq)3) acts as red core and poly[(9,9-dioctylfluorene-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,7-diyl)] (PFBT) is inserted as green-emission segment. The synthesized polymers have good thermostability, film forming ability and high fluorescence quantum yield. By tuning the contents of red core and green-emission segment, the optimized triple-color hyperbranched polymer is acquired, named PF-BT250-Ir(piq)325. Furthermore, the PF-BT250-Ir(piq)325 is utilized as single emission layer in white polymer light emitting diode with the configuration of ITO/PEDOT:PSS (50 nm)/PF-BT250-Ir(piq)325 (80 nm)/TPBI (40 nm)/LiF (1 nm)/Al (100 nm). The diode exhibits a maximum luminous efficiency of 1.60 cd/A, a maximum luminance of 3267 cd/m2 and the Commission Internationale de l'Eclairage coordinate of (0.32, 0.34) very close to the pure white point of (0.33, 0.33).
AB - A series of triple-color hyperbranched polymers based on poly(9,9-dioctylfluorene) (PF) were designed and synthesized, in which phosphorescent tris(1-phenylisoquinoline)iridium(Cyrillic capital letter sha) (Ir(piq)3) acts as red core and poly[(9,9-dioctylfluorene-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,7-diyl)] (PFBT) is inserted as green-emission segment. The synthesized polymers have good thermostability, film forming ability and high fluorescence quantum yield. By tuning the contents of red core and green-emission segment, the optimized triple-color hyperbranched polymer is acquired, named PF-BT250-Ir(piq)325. Furthermore, the PF-BT250-Ir(piq)325 is utilized as single emission layer in white polymer light emitting diode with the configuration of ITO/PEDOT:PSS (50 nm)/PF-BT250-Ir(piq)325 (80 nm)/TPBI (40 nm)/LiF (1 nm)/Al (100 nm). The diode exhibits a maximum luminous efficiency of 1.60 cd/A, a maximum luminance of 3267 cd/m2 and the Commission Internationale de l'Eclairage coordinate of (0.32, 0.34) very close to the pure white point of (0.33, 0.33).
KW - Electroluminescent properties
KW - Hyperbranched structure
KW - Phosphorescent Ir(piq) core
KW - Polyfluorene
KW - Triple-color
KW - White polymer light emitting diodes (WPLEDs)
UR - http://www.scopus.com/inward/record.url?scp=84947260753&partnerID=8YFLogxK
U2 - 10.1016/j.dyepig.2015.10.043
DO - 10.1016/j.dyepig.2015.10.043
M3 - Journal article
AN - SCOPUS:84947260753
SN - 0143-7208
VL - 125
SP - 339
EP - 347
JO - Dyes and Pigments
JF - Dyes and Pigments
ER -