Cationic Iridium(III) Complexes Bearing Different Bulky N,N′-Chelating Ligands

Wai Yeung Wong; Nga Yuen Chau; Qiwei Wang; Lu Jiang; Junlong Li; Zelin Sun

doi:10.1007/s10904-024-03180-7

Cationic Iridium(III) Complexes Bearing Different Bulky N,N′-Chelating Ligands

Wai Yeung Wong, Nga Yuen Chau, Qiwei Wang, Lu Jiang, Junlong Li, Zelin Sun

Research output: Journal article publication › Journal article › Academic research › peer-review

1 Citation (Scopus)

Abstract

Six cationic iridium(III) complexes bearing different bulky N,N′-chelating ligands were successfully synthesized and characterized by spectroscopic, electrochemical, thermal and photophysical methods. Because the molecular quenching and self-aggregation within molecules would deteriorate the device efficiency, the bulky molecules can suppress these problems and improve the device performance. The best doped organic light-emitting diodes based on these charged Ir(III) complex E1 exhibited L_max of 26,800 cd/m², η_{L, max} of 35.0 cd/A and η_{P, max} of 18.5 lm/W, which also showed a small efficiency roll-off in the range of 100 to 1000 cd/m². Graphical Abstract: (Figure presented.)

Original language	English
Pages (from-to)	3178-3190
Number of pages	13
Journal	Journal of Inorganic and Organometallic Polymers and Materials
Volume	34
Issue number	7
DOIs	https://doi.org/10.1007/s10904-024-03180-7
Publication status	Published - Jul 2024

Keywords

Cationic complexes
Iridium
Organic light-emitting devices
Phosphorescence
Synthesis

ASJC Scopus subject areas

Polymers and Plastics
Materials Chemistry

More information

10.1007/s10904-024-03180-7

http://hdl.handle.net/10397/108872

Cite this

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title = "Cationic Iridium(III) Complexes Bearing Different Bulky N,N′-Chelating Ligands",

abstract = "Six cationic iridium(III) complexes bearing different bulky N,N′-chelating ligands were successfully synthesized and characterized by spectroscopic, electrochemical, thermal and photophysical methods. Because the molecular quenching and self-aggregation within molecules would deteriorate the device efficiency, the bulky molecules can suppress these problems and improve the device performance. The best doped organic light-emitting diodes based on these charged Ir(III) complex E1 exhibited Lmax of 26,800 cd/m2, ηL, max of 35.0 cd/A and ηP, max of 18.5 lm/W, which also showed a small efficiency roll-off in the range of 100 to 1000 cd/m2. Graphical Abstract: (Figure presented.)",

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AU - Wong, Wai Yeung

AU - Chau, Nga Yuen

AU - Wang, Qiwei

AU - Jiang, Lu

AU - Li, Junlong

AU - Sun, Zelin

N1 - Publisher Copyright: © The Author(s) 2024.

PY - 2024/7

Y1 - 2024/7

N2 - Six cationic iridium(III) complexes bearing different bulky N,N′-chelating ligands were successfully synthesized and characterized by spectroscopic, electrochemical, thermal and photophysical methods. Because the molecular quenching and self-aggregation within molecules would deteriorate the device efficiency, the bulky molecules can suppress these problems and improve the device performance. The best doped organic light-emitting diodes based on these charged Ir(III) complex E1 exhibited Lmax of 26,800 cd/m2, ηL, max of 35.0 cd/A and ηP, max of 18.5 lm/W, which also showed a small efficiency roll-off in the range of 100 to 1000 cd/m2. Graphical Abstract: (Figure presented.)

AB - Six cationic iridium(III) complexes bearing different bulky N,N′-chelating ligands were successfully synthesized and characterized by spectroscopic, electrochemical, thermal and photophysical methods. Because the molecular quenching and self-aggregation within molecules would deteriorate the device efficiency, the bulky molecules can suppress these problems and improve the device performance. The best doped organic light-emitting diodes based on these charged Ir(III) complex E1 exhibited Lmax of 26,800 cd/m2, ηL, max of 35.0 cd/A and ηP, max of 18.5 lm/W, which also showed a small efficiency roll-off in the range of 100 to 1000 cd/m2. Graphical Abstract: (Figure presented.)

KW - Cationic complexes

KW - Iridium

KW - Organic light-emitting devices

KW - Phosphorescence

KW - Synthesis

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Cationic Iridium(III) Complexes Bearing Different Bulky N,N′-Chelating Ligands

Abstract

Keywords

ASJC Scopus subject areas

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