TY - JOUR
T1 - Spirobi[dibenzo[
T2 - B, e] [1,4]azasiline]: A novel platform for host materials in highly efficient organic light-emitting diodes
AU - Liu, Xiang Yang
AU - Tang, Xun
AU - Zhao, Yue
AU - Zhao, Danli
AU - Fan, Jian
AU - Liao, Liang Sheng
N1 - Funding Information:
We acknowledge financial support from the National Key R&D Program of China (2016YFB0400703), the National Natural Science Foundation of China (21472135, 61307036), Natural Science Foundation of Jiangsu Province of China (BK20151216), and the 111 Project. This project is also funded by Collaborative Innovation Center of Suzhou Nano Science and Technology (CIC-Nano), Soochow University and by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
Publisher Copyright:
© 2018 The Royal Society of Chemistry.
PY - 2018
Y1 - 2018
N2 - A novel spiro-type material (5H,5′H-10,10′-spirobi[dibenzo[b,e][1,4]azasiline]-5,5′-diyl)bis((4-methoxyphenyl)-methanone) (SDBSO) was designed and synthesized. The introduction of spirobi[dibenzo[b,e][1,4]azasiline] causes the material to retain high triplet energy (over 3.10 eV). In addition, owing to its highly steric and rigid structure and spiro-linkage, SDBSO exhibited good thermal stability and suitable frontier molecular orbital (FMO) energy levels. The RGB (blue, green, and red) three-color phosphorescent organic light-emitting diodes with SDBSO as the host material were fabricated and maximum external quantum efficiencies of over 20% were achieved for the green and red devices with relatively flat roll-off, indicating its potential utility as a host-building block for highly efficient PHOLEDs.
AB - A novel spiro-type material (5H,5′H-10,10′-spirobi[dibenzo[b,e][1,4]azasiline]-5,5′-diyl)bis((4-methoxyphenyl)-methanone) (SDBSO) was designed and synthesized. The introduction of spirobi[dibenzo[b,e][1,4]azasiline] causes the material to retain high triplet energy (over 3.10 eV). In addition, owing to its highly steric and rigid structure and spiro-linkage, SDBSO exhibited good thermal stability and suitable frontier molecular orbital (FMO) energy levels. The RGB (blue, green, and red) three-color phosphorescent organic light-emitting diodes with SDBSO as the host material were fabricated and maximum external quantum efficiencies of over 20% were achieved for the green and red devices with relatively flat roll-off, indicating its potential utility as a host-building block for highly efficient PHOLEDs.
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U2 - 10.1039/c7tc05031c
DO - 10.1039/c7tc05031c
M3 - Article
AN - SCOPUS:85041470004
SN - 2050-7526
VL - 6
SP - 1023
EP - 1030
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 5
ER -