Cationic Ir(III) Complexes with 4-Fluoro-4'-pyrazolyl-(1,1'-biphenyl)-2-carbonitrile as the Cyclometalating Ligand : Synthesis, Characterizations, and Application to Ultrahigh-Efficiency Light-Emitting Electrochemical Cells
Light-emitting electrochemical cells (LECs) promise low-cost, large-area luminescence applications with air-stabilized electrodes and a versatile fabrication that enables the use of solution processes. Nevertheless, the commercialization of LECs is still encountering many obstacles, such as low electroluminescence (EL) efficiencies of the ionic materials. In this paper, we propose five blue to yellow ionic Ir complexes possessing 4-fluoro-4'-pyrazolyl-(1,1'-biphenyl)-2-carbonitrile (ppfn) as a novel cyclometalating ligand and use them in LECs. In particular, the device within di[4-fluoro-4'-pyrazolyl-(1,1'-biphenyl)-2-carbonitrile]-4,4'-di-tert-butyl-2,2'-bipyridyl iridium(III) hexafluorophosphate (DTBP) shows a remarkable photoluminescence quantum yield (PLQY) of 70%, and by adjusting the emissive-layer thickness, the maximal external quantum efficiency (EQE) reaches 22.15% at 532 nm under the thickness of 0.51 μm, showing the state-of-the-art value for the reported blue-green LECs.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2024 |
|---|---|
| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:63 |
|---|---|
| Enthalten in: |
Inorganic chemistry - 63(2024), 11 vom: 18. März, Seite 4828-4838 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Yi, Rong-Huei [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Revised 22.03.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1021/acs.inorgchem.3c03517 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM369368169 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM369368169 | ||
| 003 | DE-627 | ||
| 005 | 20240323001037.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240307s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1021/acs.inorgchem.3c03517 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1341.xml |
| 035 | |a (DE-627)NLM369368169 | ||
| 035 | |a (NLM)38447051 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Yi, Rong-Huei |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Cationic Ir(III) Complexes with 4-Fluoro-4'-pyrazolyl-(1,1'-biphenyl)-2-carbonitrile as the Cyclometalating Ligand |b Synthesis, Characterizations, and Application to Ultrahigh-Efficiency Light-Emitting Electrochemical Cells |
| 264 | 1 | |c 2024 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 22.03.2024 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Light-emitting electrochemical cells (LECs) promise low-cost, large-area luminescence applications with air-stabilized electrodes and a versatile fabrication that enables the use of solution processes. Nevertheless, the commercialization of LECs is still encountering many obstacles, such as low electroluminescence (EL) efficiencies of the ionic materials. In this paper, we propose five blue to yellow ionic Ir complexes possessing 4-fluoro-4'-pyrazolyl-(1,1'-biphenyl)-2-carbonitrile (ppfn) as a novel cyclometalating ligand and use them in LECs. In particular, the device within di[4-fluoro-4'-pyrazolyl-(1,1'-biphenyl)-2-carbonitrile]-4,4'-di-tert-butyl-2,2'-bipyridyl iridium(III) hexafluorophosphate (DTBP) shows a remarkable photoluminescence quantum yield (PLQY) of 70%, and by adjusting the emissive-layer thickness, the maximal external quantum efficiency (EQE) reaches 22.15% at 532 nm under the thickness of 0.51 μm, showing the state-of-the-art value for the reported blue-green LECs | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Lee, Yi-Hsun |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Yu-Ting |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Xuan-Jun |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Yun-Xin |e verfasserin |4 aut | |
| 700 | 1 | |a Luo, Dian |e verfasserin |4 aut | |
| 700 | 1 | |a Lu, Chin-Wei |e verfasserin |4 aut | |
| 700 | 1 | |a Su, Hai-Ching |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Inorganic chemistry |d 1966 |g 63(2024), 11 vom: 18. März, Seite 4828-4838 |w (DE-627)NLM110650298 |x 1520-510X |7 nnns |
| 773 | 1 | 8 | |g volume:63 |g year:2024 |g number:11 |g day:18 |g month:03 |g pages:4828-4838 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1021/acs.inorgchem.3c03517 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 63 |j 2024 |e 11 |b 18 |c 03 |h 4828-4838 | ||