Smart Design on the Cyclometalated Ligands of Iridium(III) Complexes for Facile Tuning of Phosphorescence Color Spanning from Deep-Blue to Near-Infrared

Zhao Chen; Liqi Wang; Cheuk Lam Ho; Shuming Chen; Songwut Suramitr; Aunyamanee Plucksacholatarn; Nianyong Zhu; Supa Hannongbua; Wai Yeung Wong

doi:10.1002/adom.201800824

Smart Design on the Cyclometalated Ligands of Iridium(III) Complexes for Facile Tuning of Phosphorescence Color Spanning from Deep-Blue to Near-Infrared

Zhao Chen, Liqi Wang, Cheuk Lam Ho, Shuming Chen, Songwut Suramitr, Aunyamanee Plucksacholatarn, Nianyong Zhu, Supa Hannongbua, Wai Yeung Wong

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

46 Citations (Scopus)

Abstract

It has long been a challenge to achieve iridium(III) complexes with emission colors covering the whole visible and near-infrared wavelengths, by using similar cyclometalating ligands. Herein, a series of iridium(III) complexes that accomplish broadly tunable phosphorescence from 420 to 729 nm through the use of trifluoromethyl substituents and other conjugated units such as [1,2,5]thiadiazolo[3,4-c]pyridine in the cyclometalating ligands are reported. The peak external quantum efficiencies of 7.1%, 20.0%, 14.0%, 4.0%, and 16.0% are achieved for deep-blue, green, red, near-infrared, and white phosphorescent organic light-emitting diodes, respectively, by using these iridium(III) complexes.

Original language	English
Article number	1800824
Journal	Advanced Optical Materials
Volume	6
Issue number	23
DOIs	https://doi.org/10.1002/adom.201800824
Publication status	Published - 3 Dec 2018

Keywords

full-color emission
iridium complexes
near-infrared
organic light-emitting diodes
trifluoromethyl substituent

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

More information

10.1002/adom.201800824

Cite this

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title = "Smart Design on the Cyclometalated Ligands of Iridium(III) Complexes for Facile Tuning of Phosphorescence Color Spanning from Deep-Blue to Near-Infrared",

abstract = "It has long been a challenge to achieve iridium(III) complexes with emission colors covering the whole visible and near-infrared wavelengths, by using similar cyclometalating ligands. Herein, a series of iridium(III) complexes that accomplish broadly tunable phosphorescence from 420 to 729 nm through the use of trifluoromethyl substituents and other conjugated units such as [1,2,5]thiadiazolo[3,4-c]pyridine in the cyclometalating ligands are reported. The peak external quantum efficiencies of 7.1%, 20.0%, 14.0%, 4.0%, and 16.0% are achieved for deep-blue, green, red, near-infrared, and white phosphorescent organic light-emitting diodes, respectively, by using these iridium(III) complexes.",

keywords = "full-color emission, iridium complexes, near-infrared, organic light-emitting diodes, trifluoromethyl substituent",

author = "Zhao Chen and Liqi Wang and Ho, {Cheuk Lam} and Shuming Chen and Songwut Suramitr and Aunyamanee Plucksacholatarn and Nianyong Zhu and Supa Hannongbua and Wong, {Wai Yeung}",

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doi = "10.1002/adom.201800824",

language = "English",

volume = "6",

journal = "Advanced Optical Materials",

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Smart Design on the Cyclometalated Ligands of Iridium(III) Complexes for Facile Tuning of Phosphorescence Color Spanning from Deep-Blue to Near-Infrared. / Chen, Zhao; Wang, Liqi; Ho, Cheuk Lam et al.
In: Advanced Optical Materials, Vol. 6, No. 23, 1800824, 03.12.2018.

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

TY - JOUR

T1 - Smart Design on the Cyclometalated Ligands of Iridium(III) Complexes for Facile Tuning of Phosphorescence Color Spanning from Deep-Blue to Near-Infrared

AU - Chen, Zhao

AU - Wang, Liqi

AU - Ho, Cheuk Lam

AU - Chen, Shuming

AU - Suramitr, Songwut

AU - Plucksacholatarn, Aunyamanee

AU - Zhu, Nianyong

AU - Hannongbua, Supa

AU - Wong, Wai Yeung

PY - 2018/12/3

Y1 - 2018/12/3

N2 - It has long been a challenge to achieve iridium(III) complexes with emission colors covering the whole visible and near-infrared wavelengths, by using similar cyclometalating ligands. Herein, a series of iridium(III) complexes that accomplish broadly tunable phosphorescence from 420 to 729 nm through the use of trifluoromethyl substituents and other conjugated units such as [1,2,5]thiadiazolo[3,4-c]pyridine in the cyclometalating ligands are reported. The peak external quantum efficiencies of 7.1%, 20.0%, 14.0%, 4.0%, and 16.0% are achieved for deep-blue, green, red, near-infrared, and white phosphorescent organic light-emitting diodes, respectively, by using these iridium(III) complexes.

AB - It has long been a challenge to achieve iridium(III) complexes with emission colors covering the whole visible and near-infrared wavelengths, by using similar cyclometalating ligands. Herein, a series of iridium(III) complexes that accomplish broadly tunable phosphorescence from 420 to 729 nm through the use of trifluoromethyl substituents and other conjugated units such as [1,2,5]thiadiazolo[3,4-c]pyridine in the cyclometalating ligands are reported. The peak external quantum efficiencies of 7.1%, 20.0%, 14.0%, 4.0%, and 16.0% are achieved for deep-blue, green, red, near-infrared, and white phosphorescent organic light-emitting diodes, respectively, by using these iridium(III) complexes.

KW - full-color emission

KW - iridium complexes

KW - near-infrared

KW - organic light-emitting diodes

KW - trifluoromethyl substituent

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DO - 10.1002/adom.201800824

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Smart Design on the Cyclometalated Ligands of Iridium(III) Complexes for Facile Tuning of Phosphorescence Color Spanning from Deep-Blue to Near-Infrared

Abstract

Keywords

ASJC Scopus subject areas

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