Macrospirocyclic Oligomer Based on Triphenylamine and Diphenylphosphine Oxide as a Bipolar Host for Efficient Blue Electrophosphorescent Organic Light-Emitting Diodes (OLEDs)

被引：26
作者：
Chen, Kun [1 ]
Zhao, Hui-Ru [2 ]
Fan, Zhao-Kang [3 ]
Yin, Gui
Chen, Qing-Min [3 ]
Quan, Yi-Wu [3 ]
Li, Shu-Hua [2 ]
Ye, Shang-Hui [4 ,5 ]
机构：
[1] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Analyt Chem Life Sci, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Sch Chem & Chem Engn, Inst Theoret & Computat Chem, Nanjing 210093, Jiangsu, Peoples R China
[3] Nanjing Univ, Sch Chem & Chem Engn, Dept Polymer Sci & Engn, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China
[4] Nanjing Univ Posts & Telecommun, Natl Synergist Innovat Ctr Adv Mat SICAM, Key Lab Organ Elect & Informat Displays KLOEID, Nanjing 210023, Jiangsu, Peoples R China
[5] Nanjing Univ Posts & Telecommun, Natl Synergist Innovat Ctr Adv Mat SICAM, Inst Adv Mat, Nanjing 210023, Jiangsu, Peoples R China
来源：
ORGANIC LETTERS | 2015年 / 17卷 / 06期
基金：
中国国家自然科学基金;
关键词：
HIGH TRIPLET ENERGY; QUANTUM EFFICIENCY; PHOSPHORESCENT; GREEN; FLUORENE; LINKAGE;
D O I：
10.1021/acs.orglett.5b00292
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A novel bipolar oligomer (TPA-PO)(3) was prepared as a host material for efficient blue phosphorescent organic light-emitting diodes (OLEDs). Through the C-9s of the fluorene units, three triphenylamine units attached to diphenylphosphine oxide are connected in series to form a macrocyclic structure. The solution-processed phosphorescent device based on FIrpic and (TPA-PO)(3) achieved a maximum current efficiency of 19.4 cd A(-1) and a maximum luminance of 11 500 cd m(-2) with a relatively low efficiency roll-off.
引用
收藏
页码：1413 / 1416
页数：4
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