TY - JOUR
T1 - Concentration-dependent circularly polarized luminescence of chiral cyclometalated platinum(II) complexes for electroluminescence
AU - Han, Jianmei
AU - Lu, Hu
AU - Xu, Yanan
AU - Guo, Song
AU - Zheng, Xiaokang
AU - Tao, Peng
AU - Liu, Shujuan
AU - Zhang, Xinwen
AU - Zhao, Qiang
N1 - Funding Information:
The authors thank the National Funds for Distinguished Young Scientists ( 61825503 ), Natural Science Foundation of Jiangsu Province of China ( BK20180760 ), National Natural Scientific Foundation of China ( 61905120 ) and Natural Science Foundation of Jiangsu Province of China ( BK20190740 ).
Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/6/7
Y1 - 2020/6/7
N2 - Circularly polarized organic light-emitting diodes (CP-OLEDs) have been attracting increasing attention due to the direct generation of CP light, and they show the improved image contrast and luminous efficiency in OLEDs displays. In this work, a pair of chiral Pt(II) complexes with methylbenzylisocyanide and 1,3-bis(2-pyridyl)benzene as a tridentate N∧C∧N ligand were synthesized. Both of them exhibited bright green emission in dilute acetonitrile solution, while strong orange emission in high concentration of acetonitrile solution. However, when the complexes were doped into polymethyl methacrylate, the green emission originated from intrinsic single molecule can be changed to the red emission from excimer by adjusting the doping ratios. More importantly, the amplification of CPL signal can be achieved compared with the solution state. Furthermore, the monochrome devices were fabricated by utilizing these two enantiomers as emitters.
AB - Circularly polarized organic light-emitting diodes (CP-OLEDs) have been attracting increasing attention due to the direct generation of CP light, and they show the improved image contrast and luminous efficiency in OLEDs displays. In this work, a pair of chiral Pt(II) complexes with methylbenzylisocyanide and 1,3-bis(2-pyridyl)benzene as a tridentate N∧C∧N ligand were synthesized. Both of them exhibited bright green emission in dilute acetonitrile solution, while strong orange emission in high concentration of acetonitrile solution. However, when the complexes were doped into polymethyl methacrylate, the green emission originated from intrinsic single molecule can be changed to the red emission from excimer by adjusting the doping ratios. More importantly, the amplification of CPL signal can be achieved compared with the solution state. Furthermore, the monochrome devices were fabricated by utilizing these two enantiomers as emitters.
KW - Chiral Pt(II) complexes
KW - Circularly polarized organic light-emitting diodes
KW - g factor
KW - Phosphorescence
UR - http://www.scopus.com/inward/record.url?scp=85082179043&partnerID=8YFLogxK
U2 - 10.1016/j.jorganchem.2020.121240
DO - 10.1016/j.jorganchem.2020.121240
M3 - Journal article
AN - SCOPUS:85082179043
SN - 0022-328X
VL - 915
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
M1 - 121240
ER -