Synthesis, photoluminescence and electroluminescence of triphenylphosphine functionalized cyclometalated iridium(III) complexes

Guiping Tan; Liqi Wang; Shoushan Wang; Peng Liu; Hongbo Fan; Cheuk Lam Ho; Dongge Ma; Wai Yeung Wong

doi:10.1016/j.dyepig.2018.08.054

Synthesis, photoluminescence and electroluminescence of triphenylphosphine functionalized cyclometalated iridium(III) complexes

Guiping Tan, Liqi Wang, Shoushan Wang, Peng Liu, Hongbo Fan, Cheuk Lam Ho, Dongge Ma, Wai Yeung Wong

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

9 Citations (Scopus)

Abstract

Three greenish-blue iridium (III) phosphorescent complexes with the molecular structure of [Ir(pppy) ₂ (PPh ₃ )L] (Hpppy = 2-(4-phenoxyphenyl)pyridine; L = Cl ⁻ , NCS ⁻ , NCO ⁻ ) were synthesized and characterized. Their photoluminescence spectra are significantly blue-shifted after introducing the strong-field ancillary ligand triphenylphosphine. These compounds exhibit emission peaks in the range of 474–479 nm in solutions at 298 K with quantum yields up to 0.33. The organic light-emitting diodes (OLEDs) were fabricated by thermal evaporation with complex 3. The best OLED D3 was obtained with turn-on voltage of 4.3 V, maximum luminance of 11931 cd m ⁻² under 15.7 V, highest luminance efficiency (η _L ) as 16.6 cd A ⁻¹ , power efficiency (η _P ) as 12.2 lm W ⁻¹ and external quantum efficiency (EQE) as 5.6%.

Original language	English
Pages (from-to)	717-725
Number of pages	9
Journal	Dyes and Pigments
Volume	160
DOIs	https://doi.org/10.1016/j.dyepig.2018.08.054
Publication status	Published - 1 Jan 2019

Keywords

Crystal structure
Iridium(III) complexes
Organic light-emitting diodes
Phosphorescence
Triphenylphosphine

ASJC Scopus subject areas

General Chemical Engineering
Process Chemistry and Technology

More information

10.1016/j.dyepig.2018.08.054

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@article{0b6051a870f5420e87ee0a21b46aeddd,

title = "Synthesis, photoluminescence and electroluminescence of triphenylphosphine functionalized cyclometalated iridium(III) complexes",

abstract = " Three greenish-blue iridium (III) phosphorescent complexes with the molecular structure of [Ir(pppy) 2 (PPh 3 )L] (Hpppy = 2-(4-phenoxyphenyl)pyridine; L = Cl − , NCS − , NCO − ) were synthesized and characterized. Their photoluminescence spectra are significantly blue-shifted after introducing the strong-field ancillary ligand triphenylphosphine. These compounds exhibit emission peaks in the range of 474–479 nm in solutions at 298 K with quantum yields up to 0.33. The organic light-emitting diodes (OLEDs) were fabricated by thermal evaporation with complex 3. The best OLED D3 was obtained with turn-on voltage of 4.3 V, maximum luminance of 11931 cd m −2 under 15.7 V, highest luminance efficiency (η L ) as 16.6 cd A −1 , power efficiency (η P ) as 12.2 lm W −1 and external quantum efficiency (EQE) as 5.6%. ",

keywords = "Crystal structure, Iridium(III) complexes, Organic light-emitting diodes, Phosphorescence, Triphenylphosphine",

author = "Guiping Tan and Liqi Wang and Shoushan Wang and Peng Liu and Hongbo Fan and Ho, {Cheuk Lam} and Dongge Ma and Wong, {Wai Yeung}",

year = "2019",

month = jan,

day = "1",

doi = "10.1016/j.dyepig.2018.08.054",

language = "English",

volume = "160",

pages = "717--725",

journal = "Dyes and Pigments",

issn = "0143-7208",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Synthesis, photoluminescence and electroluminescence of triphenylphosphine functionalized cyclometalated iridium(III) complexes

AU - Tan, Guiping

AU - Wang, Liqi

AU - Wang, Shoushan

AU - Liu, Peng

AU - Fan, Hongbo

AU - Ho, Cheuk Lam

AU - Ma, Dongge

AU - Wong, Wai Yeung

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Three greenish-blue iridium (III) phosphorescent complexes with the molecular structure of [Ir(pppy) 2 (PPh 3 )L] (Hpppy = 2-(4-phenoxyphenyl)pyridine; L = Cl − , NCS − , NCO − ) were synthesized and characterized. Their photoluminescence spectra are significantly blue-shifted after introducing the strong-field ancillary ligand triphenylphosphine. These compounds exhibit emission peaks in the range of 474–479 nm in solutions at 298 K with quantum yields up to 0.33. The organic light-emitting diodes (OLEDs) were fabricated by thermal evaporation with complex 3. The best OLED D3 was obtained with turn-on voltage of 4.3 V, maximum luminance of 11931 cd m −2 under 15.7 V, highest luminance efficiency (η L ) as 16.6 cd A −1 , power efficiency (η P ) as 12.2 lm W −1 and external quantum efficiency (EQE) as 5.6%.

AB - Three greenish-blue iridium (III) phosphorescent complexes with the molecular structure of [Ir(pppy) 2 (PPh 3 )L] (Hpppy = 2-(4-phenoxyphenyl)pyridine; L = Cl − , NCS − , NCO − ) were synthesized and characterized. Their photoluminescence spectra are significantly blue-shifted after introducing the strong-field ancillary ligand triphenylphosphine. These compounds exhibit emission peaks in the range of 474–479 nm in solutions at 298 K with quantum yields up to 0.33. The organic light-emitting diodes (OLEDs) were fabricated by thermal evaporation with complex 3. The best OLED D3 was obtained with turn-on voltage of 4.3 V, maximum luminance of 11931 cd m −2 under 15.7 V, highest luminance efficiency (η L ) as 16.6 cd A −1 , power efficiency (η P ) as 12.2 lm W −1 and external quantum efficiency (EQE) as 5.6%.

KW - Crystal structure

KW - Iridium(III) complexes

KW - Organic light-emitting diodes

KW - Phosphorescence

KW - Triphenylphosphine

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U2 - 10.1016/j.dyepig.2018.08.054

DO - 10.1016/j.dyepig.2018.08.054

M3 - Journal article

AN - SCOPUS:85053068649

SN - 0143-7208

VL - 160

SP - 717

EP - 725

JO - Dyes and Pigments

JF - Dyes and Pigments

ER -

Synthesis, photoluminescence and electroluminescence of triphenylphosphine functionalized cyclometalated iridium(III) complexes

Abstract

Keywords

ASJC Scopus subject areas

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