TY - JOUR
T1 - A novel host material with high thermal stability for green electrophosphorescent device
AU - Liang, Wenqing
AU - Gao, Zhixiang
AU - Song, Wenxuan
AU - Su, Jianhua
AU - Guo, Kunpeng
AU - Dong, Qingchen
AU - Huang, Jinhai
AU - Wong, Wai Yeung
N1 - Funding Information:
Support from the National Natural Science Foundation of China (Grant No.: 61307030, 21303117).This work was also supported by the Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi (OIT), Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province, the Natural Science Foundation for Young Scientists of Shanxi Province, China (Grant No.: 2014021019-2), the Outstanding Young Scholars Cultivating Program, Research Project Supported by Shanxi Scholarship Council of China(Grant No.: 2014-02) and the Qualified Personal Foundation of Taiyuan University of Technology (Grant No.:2013Y003,tyut-rc201275a).
PY - 2016/3/17
Y1 - 2016/3/17
N2 - A new bipolar host material based on triphenylamine, fluorene and 1,2-diphenyl-1H-benzo[d]imidazole moieties, N,N-diphenyl-4-(9-phenyl-2-(4-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)-9H-fluoren-9-yl)aniline (DPPBIPFA), was designed and synthesized. The as-synthesized material was well characterized by1H and13C NMR spectroscopy, high-resolution mass spectrometry and thermogravimetric analysis, respectively. The photophysical and electrochemical properties of the material were also studied. The material exhibited an excellent thermal stability (Td= 475 °C), electrochemical stability and high triplet energy (2.68 eV). A green phosphorescent organic light-emitting diode (PhOLED) device based on DPPBIPFA as the host material and Ir(ppy)3as the dopant was fabricated, which displayed favorable electrophosphorescent properties with a turn-on voltage of 3.75 V, a maximum brightness of 1685 cd/m2and a maximum current efficiency of 4.26 cd/A.
AB - A new bipolar host material based on triphenylamine, fluorene and 1,2-diphenyl-1H-benzo[d]imidazole moieties, N,N-diphenyl-4-(9-phenyl-2-(4-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)-9H-fluoren-9-yl)aniline (DPPBIPFA), was designed and synthesized. The as-synthesized material was well characterized by1H and13C NMR spectroscopy, high-resolution mass spectrometry and thermogravimetric analysis, respectively. The photophysical and electrochemical properties of the material were also studied. The material exhibited an excellent thermal stability (Td= 475 °C), electrochemical stability and high triplet energy (2.68 eV). A green phosphorescent organic light-emitting diode (PhOLED) device based on DPPBIPFA as the host material and Ir(ppy)3as the dopant was fabricated, which displayed favorable electrophosphorescent properties with a turn-on voltage of 3.75 V, a maximum brightness of 1685 cd/m2and a maximum current efficiency of 4.26 cd/A.
KW - Bipolar host material
KW - Doped OLED
KW - High thermal stability
KW - Phosphorescence
UR - http://www.scopus.com/inward/record.url?scp=84982158811&partnerID=8YFLogxK
U2 - 10.1016/j.tet.2016.01.056
DO - 10.1016/j.tet.2016.01.056
M3 - Journal article
AN - SCOPUS:84982158811
SN - 0040-4020
VL - 72
SP - 1505
EP - 1510
JO - Tetrahedron
JF - Tetrahedron
IS - 11
ER -