Tunable emission of polymer light emitting diodes bearing green-emitting Ir(III) complexes: The structural role of 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole ligands

Min Ju Cho; Jung Il Jin; Dong Hoon Choi; Jung Hee Yoon; Chang Seop Hong; Young Min Kim; Young Wook Park; Byeong Kwon Ju

doi:10.1016/j.dyepig.2009.10.017

Tunable emission of polymer light emitting diodes bearing green-emitting Ir(III) complexes: The structural role of 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole ligands

Min Ju Cho, Jung Il Jin, Dong Hoon Choi, Jung Hee Yoon, Chang Seop Hong, Young Min Kim, Young Wook Park, Byeong Kwon Ju

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

35 Citations (Scopus)

Abstract

9-((6-Phenylpyridin-3-yl)methyl)-9H-carbazole and 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole were synthesized as ligands by attaching a carbazolyl group to the pyridine in 2-phenylpyridine and 2-(4-fluorophenyl)pyridine, respectively. Four different Ir(III) complexes were prepared using a simple procedure, the solubility of which was significantly greater than that of conventional green-emitting Ir(ppy)₃. Among the many devices fabricated, that which contained 10% of Ir(Cz-ppy)₁(Cz-Fppy)₂ in PVK/PBD (70:30 wt%), exhibited an external quantum efficiency of 6.80%, luminous efficiency of 20.23 cd/A, and maximum brightness of 17520 cd/m². In particular, the electronic property of the new 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole ligand can manipulate the triplet energy level of the Ir(III) complex to finely tune the emission spectra.

Original language	English
Pages (from-to)	143-151
Number of pages	9
Journal	Dyes and Pigments
Volume	85
Issue number	3
DOIs	https://doi.org/10.1016/j.dyepig.2009.10.017
Publication status	Published - 2010 May

Keywords

Electrophosphorescence
Iridium(III) complex
Ligand
Photoluminescence
Solubility
Triplet energy transfer

ASJC Scopus subject areas

Chemical Engineering(all)
Process Chemistry and Technology

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10.1016/j.dyepig.2009.10.017

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@article{82914b2563524339ab77c568095668f5,

title = "Tunable emission of polymer light emitting diodes bearing green-emitting Ir(III) complexes: The structural role of 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole ligands",

abstract = "9-((6-Phenylpyridin-3-yl)methyl)-9H-carbazole and 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole were synthesized as ligands by attaching a carbazolyl group to the pyridine in 2-phenylpyridine and 2-(4-fluorophenyl)pyridine, respectively. Four different Ir(III) complexes were prepared using a simple procedure, the solubility of which was significantly greater than that of conventional green-emitting Ir(ppy)3. Among the many devices fabricated, that which contained 10% of Ir(Cz-ppy)1(Cz-Fppy)2 in PVK/PBD (70:30 wt%), exhibited an external quantum efficiency of 6.80%, luminous efficiency of 20.23 cd/A, and maximum brightness of 17520 cd/m2. In particular, the electronic property of the new 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole ligand can manipulate the triplet energy level of the Ir(III) complex to finely tune the emission spectra.",

keywords = "Electrophosphorescence, Iridium(III) complex, Ligand, Photoluminescence, Solubility, Triplet energy transfer",

author = "Cho, {Min Ju} and Jin, {Jung Il} and Choi, {Dong Hoon} and Yoon, {Jung Hee} and Hong, {Chang Seop} and Kim, {Young Min} and Park, {Young Wook} and Ju, {Byeong Kwon}",

note = "Funding Information: This research work was supported by LG display (2009–2010). Particularly, Prof. D. H. Choi thanks the financial support by the Seoul R&BD Program (2008–2009), and second stage of the Brain Korea 21 Project in 2009 (Korea Research Foundation) ",

year = "2010",

month = may,

doi = "10.1016/j.dyepig.2009.10.017",

language = "English",

volume = "85",

pages = "143--151",

journal = "Dyes and Pigments",

issn = "0143-7208",

publisher = "Elsevier BV",

number = "3",

}

TY - JOUR

T1 - Tunable emission of polymer light emitting diodes bearing green-emitting Ir(III) complexes

T2 - The structural role of 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole ligands

AU - Cho, Min Ju

AU - Jin, Jung Il

AU - Choi, Dong Hoon

AU - Yoon, Jung Hee

AU - Hong, Chang Seop

AU - Kim, Young Min

AU - Park, Young Wook

AU - Ju, Byeong Kwon

N1 - Funding Information: This research work was supported by LG display (2009–2010). Particularly, Prof. D. H. Choi thanks the financial support by the Seoul R&BD Program (2008–2009), and second stage of the Brain Korea 21 Project in 2009 (Korea Research Foundation)

PY - 2010/5

Y1 - 2010/5

N2 - 9-((6-Phenylpyridin-3-yl)methyl)-9H-carbazole and 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole were synthesized as ligands by attaching a carbazolyl group to the pyridine in 2-phenylpyridine and 2-(4-fluorophenyl)pyridine, respectively. Four different Ir(III) complexes were prepared using a simple procedure, the solubility of which was significantly greater than that of conventional green-emitting Ir(ppy)3. Among the many devices fabricated, that which contained 10% of Ir(Cz-ppy)1(Cz-Fppy)2 in PVK/PBD (70:30 wt%), exhibited an external quantum efficiency of 6.80%, luminous efficiency of 20.23 cd/A, and maximum brightness of 17520 cd/m2. In particular, the electronic property of the new 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole ligand can manipulate the triplet energy level of the Ir(III) complex to finely tune the emission spectra.

AB - 9-((6-Phenylpyridin-3-yl)methyl)-9H-carbazole and 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole were synthesized as ligands by attaching a carbazolyl group to the pyridine in 2-phenylpyridine and 2-(4-fluorophenyl)pyridine, respectively. Four different Ir(III) complexes were prepared using a simple procedure, the solubility of which was significantly greater than that of conventional green-emitting Ir(ppy)3. Among the many devices fabricated, that which contained 10% of Ir(Cz-ppy)1(Cz-Fppy)2 in PVK/PBD (70:30 wt%), exhibited an external quantum efficiency of 6.80%, luminous efficiency of 20.23 cd/A, and maximum brightness of 17520 cd/m2. In particular, the electronic property of the new 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole ligand can manipulate the triplet energy level of the Ir(III) complex to finely tune the emission spectra.

KW - Electrophosphorescence

KW - Iridium(III) complex

KW - Ligand

KW - Photoluminescence

KW - Solubility

KW - Triplet energy transfer

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U2 - 10.1016/j.dyepig.2009.10.017

DO - 10.1016/j.dyepig.2009.10.017

M3 - Article

AN - SCOPUS:72149102121

SN - 0143-7208

VL - 85

SP - 143

EP - 151

JO - Dyes and Pigments

JF - Dyes and Pigments

IS - 3

ER -

Tunable emission of polymer light emitting diodes bearing green-emitting Ir(III) complexes: The structural role of 9-((6-(4-fluorophenyl)pyridin-3-yl)methyl)-9H-carbazole ligands

Abstract

Keywords

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