New blue phosphorescent Pt(II) complex with pyridyltriazole-based tetradentate ligand for organic light-emitting diodes

Hea Jung Park; Jae Ho Jang; Ha Lim Lee; Jun Yeob Lee; Do Hoon Hwang

doi:10.1016/j.orgel.2021.106300

New blue phosphorescent Pt(II) complex with pyridyltriazole-based tetradentate ligand for organic light-emitting diodes

Hea Jung Park, Jae Ho Jang, Ha Lim Lee, Jun Yeob Lee, Do Hoon Hwang

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We designed and synthesized Pt-Pytz, a blue phosphorescent Pt (II) complex having 6,6-(1-methoxyethane-1,1-diyl)di (2-(3-(trifluoromethyl)-1H-1,2,4-triazol-5-yl)pyridine) as a tetradentate ligand, and investigated its photophysical, electrochemical, and electroluminescent properties. The complex showed an emission maximum at 449 nm in dichloromethane solution, with a high photoluminescence quantum efficiency of 0.81. Furthermore, the photoluminescence spectrum of Pt-Pytz in the film state contains no additional excimer emission in the long-wavelength region, indicating suppressed molecular aggregation in the solid state. An organic light-emitting diode based on Pt-Pytz as a blue dopant (10% doping) achieved the best external quantum efficiency of 7.0% with a power efficiency of 6.4%, a current efficiency of 11.2 cd/A, and the CIE coordinates of (0.146, 0.218).

Original language	English
Article number	106300
Journal	Organic Electronics
Volume	98
DOIs	https://doi.org/10.1016/j.orgel.2021.106300
State	Published - Nov 2021

Keywords

Blue phosphorescence
OLED
Pt(II) complex
Pyridyltriazole

Access to Document

10.1016/j.orgel.2021.106300

Cite this

@article{c5c0e9f41eaa42929315a1af77a238a6,

title = "New blue phosphorescent Pt(II) complex with pyridyltriazole-based tetradentate ligand for organic light-emitting diodes",

abstract = "We designed and synthesized Pt-Pytz, a blue phosphorescent Pt (II) complex having 6,6-(1-methoxyethane-1,1-diyl)di (2-(3-(trifluoromethyl)-1H-1,2,4-triazol-5-yl)pyridine) as a tetradentate ligand, and investigated its photophysical, electrochemical, and electroluminescent properties. The complex showed an emission maximum at 449 nm in dichloromethane solution, with a high photoluminescence quantum efficiency of 0.81. Furthermore, the photoluminescence spectrum of Pt-Pytz in the film state contains no additional excimer emission in the long-wavelength region, indicating suppressed molecular aggregation in the solid state. An organic light-emitting diode based on Pt-Pytz as a blue dopant (10\% doping) achieved the best external quantum efficiency of 7.0\% with a power efficiency of 6.4\%, a current efficiency of 11.2 cd/A, and the CIE coordinates of (0.146, 0.218).",

keywords = "Blue phosphorescence, OLED, Pt(II) complex, Pyridyltriazole",

author = "Park, \{Hea Jung\} and Jang, \{Jae Ho\} and Lee, \{Ha Lim\} and Lee, \{Jun Yeob\} and Hwang, \{Do Hoon\}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = nov,

doi = "10.1016/j.orgel.2021.106300",

language = "English",

volume = "98",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - New blue phosphorescent Pt(II) complex with pyridyltriazole-based tetradentate ligand for organic light-emitting diodes

AU - Park, Hea Jung

AU - Jang, Jae Ho

AU - Lee, Ha Lim

AU - Lee, Jun Yeob

AU - Hwang, Do Hoon

PY - 2021/11

Y1 - 2021/11

N2 - We designed and synthesized Pt-Pytz, a blue phosphorescent Pt (II) complex having 6,6-(1-methoxyethane-1,1-diyl)di (2-(3-(trifluoromethyl)-1H-1,2,4-triazol-5-yl)pyridine) as a tetradentate ligand, and investigated its photophysical, electrochemical, and electroluminescent properties. The complex showed an emission maximum at 449 nm in dichloromethane solution, with a high photoluminescence quantum efficiency of 0.81. Furthermore, the photoluminescence spectrum of Pt-Pytz in the film state contains no additional excimer emission in the long-wavelength region, indicating suppressed molecular aggregation in the solid state. An organic light-emitting diode based on Pt-Pytz as a blue dopant (10% doping) achieved the best external quantum efficiency of 7.0% with a power efficiency of 6.4%, a current efficiency of 11.2 cd/A, and the CIE coordinates of (0.146, 0.218).

AB - We designed and synthesized Pt-Pytz, a blue phosphorescent Pt (II) complex having 6,6-(1-methoxyethane-1,1-diyl)di (2-(3-(trifluoromethyl)-1H-1,2,4-triazol-5-yl)pyridine) as a tetradentate ligand, and investigated its photophysical, electrochemical, and electroluminescent properties. The complex showed an emission maximum at 449 nm in dichloromethane solution, with a high photoluminescence quantum efficiency of 0.81. Furthermore, the photoluminescence spectrum of Pt-Pytz in the film state contains no additional excimer emission in the long-wavelength region, indicating suppressed molecular aggregation in the solid state. An organic light-emitting diode based on Pt-Pytz as a blue dopant (10% doping) achieved the best external quantum efficiency of 7.0% with a power efficiency of 6.4%, a current efficiency of 11.2 cd/A, and the CIE coordinates of (0.146, 0.218).

KW - Blue phosphorescence

KW - OLED

KW - Pt(II) complex

KW - Pyridyltriazole

UR - https://www.scopus.com/pages/publications/85112443155

U2 - 10.1016/j.orgel.2021.106300

DO - 10.1016/j.orgel.2021.106300

M3 - Article

AN - SCOPUS:85112443155

SN - 1566-1199

VL - 98

JO - Organic Electronics

JF - Organic Electronics

M1 - 106300

ER -

New blue phosphorescent Pt(II) complex with pyridyltriazole-based tetradentate ligand for organic light-emitting diodes

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this