Novel bipolar host for highly efficient green,yellow,orange,red and deep-red phosphorescent organic

• 作 者: Cai-Jun Zheng Chuan-Lin Liu Kai Wang Si-Lu Tao Hui Lin Chun-Sing Lee
• 机 构: School of Optoelectronic Information,University of Electronic Science and Technology of China,Nano-o
• 出 处: Science China(Chemistry)
• 发表日期: 2017年04期
• 关键词: bipolar yellow orange pyrimidine colors enough versatile

A novel bipolar host tris(4-(pyrimidin-5-yl)phenyl)amine(TPMTPA) constructed by incorporating triphenylamine as the electron-donating core and pyrimidine as the electron-accepting peripheries was designed and synthesized.TPMTPA achieves excellent bipolar charge transport properties and has high enough triplet energy level to sensitize green,yellow,orange,red and deep-red phosphors.By using TPMTPA as a host,high performance green,yellow,orange,red and deep-red phosphorescent organic light-emitting devices(PhOLEDs) were demonstrated with maximum external quantum efficiencies of 20.4%,17.6%,15.1%,15.3%and 15.7%respectively.These results suggested that TPMTPA is a versatile high performance host for PhOLEDs of different emission colors.

A novel bipolar host tris (4- (pyrimidin-5-yl) phenyl) amine (TPMTPA) constructed by incorporating triphenylamine as the electron-donating core and pyrimidine as the electron-accepting peripheries was designed and synthesized. TPMTPA achieves excellent bipolar charge transport properties and has high enough triplet energy level to sensitize green, yellow, orange, red and deep-red phosphors. By using TPMTPA as a host, high performance green, yellow, orange, red and deep-red phosphorescent organic light-emitting devices PhOLEDs) were demonstrated with maximum external quantum efficiencies of 20.4%, 17.6%, 15.1%, 15.3% and 15.7%. These results suggest that TPMTPA is a versatile high performance host for PhOLEDs of different emission colors.