TY - JOUR
T1 - New platinum(II) one-armed Schiff base complexes for blue and orange PHOLEDs applications
AU - Zhang, Jie
AU - Zhu, Xunjin
AU - Zhong, Aiguo
AU - Jia, Wenping
AU - Wu, Fengshou
AU - Li, Dan
AU - Tong, Hongbo
AU - Wu, Chenglin
AU - Tang, Wenyuan
AU - Zhang, Ping
AU - Wang, Lei
AU - Han, Deman
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (No. 21501128, 21575097, 21375092, 21601142, 51403149), China Postdoctoral Science Foundation (No. 2014M560476) and Zhejiang Provincial Natural Science Foundation of China (No. LQ13B010001, LY15B030001). We also thank the Scientific Research Project of Hubei Provincial Department of Education (No. Q20161507), Scientific Research Founding of Wuhan Institute of Technology (No. K201542) and Science and Technology Plan Projects of Zhejiang Province (No.2015C33224, 2015C37034) for financial support. X. Zhu thanks the financial support from Hong Kong Baptist University (FRG1/15-16/052).
PY - 2017/3/1
Y1 - 2017/3/1
N2 - The condensation of different groups substituted salicylaldehydes with aniline and 2,4,5-trifluoroaniline, afforded five one-armed Schiff base ligands HL1, HL2, HL3, HL4 and HL5. And their platinum(II) complexes Pt(L1)2, Pt(L2)2, Pt(L3)2, Pt(L4)2, Pt(L5)2 and PtL5·DMSO were prepared through the metallation of ligands with K2PtCl4. All ligands and complexes were characterized by 1H NMR, infrared spectroscopy, mass spectrometry and single crystal X-ray diffraction. And their thermal stability, photophysical properties, and electrochemical behaviors were investigated in detail. Using these complexes as phosphorescent emitting materials, blue to orange light-emitting devices were fabricated with moderate efficiencies. The maximum current efficiency, power efficiency, and brightness for the 3.0 wt % Pt(L3)2 doped OLED are 1.12 cd A−1, 0.62 l m W−1 and 1521 cd m−2, respectively. Given the synthetic simplicity and ease of structural variation, the results here indicate that these platinum(II) Schiff base complexes are good candidates for phosphorescent OLEDs.
AB - The condensation of different groups substituted salicylaldehydes with aniline and 2,4,5-trifluoroaniline, afforded five one-armed Schiff base ligands HL1, HL2, HL3, HL4 and HL5. And their platinum(II) complexes Pt(L1)2, Pt(L2)2, Pt(L3)2, Pt(L4)2, Pt(L5)2 and PtL5·DMSO were prepared through the metallation of ligands with K2PtCl4. All ligands and complexes were characterized by 1H NMR, infrared spectroscopy, mass spectrometry and single crystal X-ray diffraction. And their thermal stability, photophysical properties, and electrochemical behaviors were investigated in detail. Using these complexes as phosphorescent emitting materials, blue to orange light-emitting devices were fabricated with moderate efficiencies. The maximum current efficiency, power efficiency, and brightness for the 3.0 wt % Pt(L3)2 doped OLED are 1.12 cd A−1, 0.62 l m W−1 and 1521 cd m−2, respectively. Given the synthetic simplicity and ease of structural variation, the results here indicate that these platinum(II) Schiff base complexes are good candidates for phosphorescent OLEDs.
KW - PHOLEDs
KW - Platinum complexes
KW - Schiff base
UR - http://www.scopus.com/inward/record.url?scp=85007012893&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2016.12.024
DO - 10.1016/j.orgel.2016.12.024
M3 - Journal article
AN - SCOPUS:85007012893
SN - 1566-1199
VL - 42
SP - 153
EP - 162
JO - Organic Electronics
JF - Organic Electronics
ER -