Alkyl-Spacer Enhancement in Performance of Light-Emitting Electrochemical Cells

Ler Chun Shiu; Bo Ren Chang; Miles C.S. Hsiao; Wu Sian Sie; Ming Lun Wu; Li Xian Huang; Cheng Ming Wang; Gene Hsiang Lee; I. Jy Chang; Hai Ching Su; Kom Bei Shiu

doi:10.1002/ejic.202000528

Alkyl-Spacer Enhancement in Performance of Light-Emitting Electrochemical Cells

Ler Chun Shiu, Bo Ren Chang, Miles C.S. Hsiao, Wu Sian Sie, Ming Lun Wu, Li Xian Huang, Cheng Ming Wang, Gene Hsiang Lee, I. Jy Chang, Hai Ching Su, Kom Bei Shiu^*

^*Corresponding author for this work

Department of Chemistry

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

9 Citations (Scopus)

Abstract

Synthetic, structural, photophysical, and electrochemical study of [Ir(ppy)₂(py)₂](BF₄) (1(BF₄)) and four di-N–N-bridged complexes of [Ir(ppy)₂(bpa)]₂(BF₄)₂ (2A(BF₄)₂), [Ir(ppy)₂((cis-bpe))]₂(BF₄)₂ (2B(BF₄)₂), [Ir(ppy)₂(tmp)]₂(BF₄)₂ (2C(BF₄)₂), and [Ir(ppy)₂(bpy)]₄(BF₄)₄ (3(BF₄)₄) are described with Hppy = 2-phenylpyridine, py = pyridine, N–N = dipyridyl ligands of 1,2-bis(4-pyridyl)ethane (bpa), cis-1,2-bis(4-pyridyl)ethylene (cis-bpe), 1,3-di(4-pyridyl)propane (tmp), and 4,4'-dipyridine (bpy). Five single-crystal structures of 1(PF₆), 2A(NO₃)₂, 2A(PF₆)₂, 2B(PF₆)₂, and 3(NO₃)₄ were determined, supporting the dibridged structures and presence of a variety of stereoisomers. Application of four luminescent complexes, 1(BF₄), 2A(BF₄)₂, 2C(BF₄)₂, and 3(BF₄)₄, in solid-state light-emitting electrochemical cells (LECs) is reported. The work demonstrates an effective approach to realize efficient LECs based on dibridged di- and multinuclear cationic transition-metal complexes with a suitably long alkyl spacer in the bridging ligand.

Original language	English
Pages (from-to)	3517-3526
Number of pages	10
Journal	European Journal of Inorganic Chemistry
Volume	2020
Issue number	36
DOIs	https://doi.org/10.1002/ejic.202000528
Publication status	Published - 2020 Sept 30

Keywords

Iridium
Ligand effects
Luminescence
Molecular devices
Synthesis design

ASJC Scopus subject areas

Inorganic Chemistry

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10.1002/ejic.202000528

Cite this

@article{7bb63c455696439fae1c0ff5b6c1befc,

title = "Alkyl-Spacer Enhancement in Performance of Light-Emitting Electrochemical Cells",

abstract = "Synthetic, structural, photophysical, and electrochemical study of [Ir(ppy)2(py)2](BF4) (1(BF4)) and four di-N–N-bridged complexes of [Ir(ppy)2(bpa)]2(BF4)2 (2A(BF4)2), [Ir(ppy)2((cis-bpe))]2(BF4)2 (2B(BF4)2), [Ir(ppy)2(tmp)]2(BF4)2 (2C(BF4)2), and [Ir(ppy)2(bpy)]4(BF4)4 (3(BF4)4) are described with Hppy = 2-phenylpyridine, py = pyridine, N–N = dipyridyl ligands of 1,2-bis(4-pyridyl)ethane (bpa), cis-1,2-bis(4-pyridyl)ethylene (cis-bpe), 1,3-di(4-pyridyl)propane (tmp), and 4,4'-dipyridine (bpy). Five single-crystal structures of 1(PF6), 2A(NO3)2, 2A(PF6)2, 2B(PF6)2, and 3(NO3)4 were determined, supporting the dibridged structures and presence of a variety of stereoisomers. Application of four luminescent complexes, 1(BF4), 2A(BF4)2, 2C(BF4)2, and 3(BF4)4, in solid-state light-emitting electrochemical cells (LECs) is reported. The work demonstrates an effective approach to realize efficient LECs based on dibridged di- and multinuclear cationic transition-metal complexes with a suitably long alkyl spacer in the bridging ligand.",

keywords = "Iridium, Ligand effects, Luminescence, Molecular devices, Synthesis design",

author = "Shiu, {Ler Chun} and Chang, {Bo Ren} and Hsiao, {Miles C.S.} and Sie, {Wu Sian} and Wu, {Ming Lun} and Huang, {Li Xian} and Wang, {Cheng Ming} and Lee, {Gene Hsiang} and Chang, {I. Jy} and Su, {Hai Ching} and Shiu, {Kom Bei}",

note = "Funding Information: We thank Projects MOST104-2119-M-006-014- and MOST107-2113-M-003-005- of the Ministry of Science and Technology (Taiwan). Publisher Copyright: {\textcopyright} 2020 Wiley-VCH GmbH",

year = "2020",

month = sep,

day = "30",

doi = "10.1002/ejic.202000528",

language = "English",

volume = "2020",

pages = "3517--3526",

journal = "European Journal of Inorganic Chemistry",

issn = "1434-1948",

publisher = "Wiley-VCH Verlag",

number = "36",

}

TY - JOUR

T1 - Alkyl-Spacer Enhancement in Performance of Light-Emitting Electrochemical Cells

AU - Shiu, Ler Chun

AU - Chang, Bo Ren

AU - Hsiao, Miles C.S.

AU - Sie, Wu Sian

AU - Wu, Ming Lun

AU - Huang, Li Xian

AU - Wang, Cheng Ming

AU - Lee, Gene Hsiang

AU - Chang, I. Jy

AU - Su, Hai Ching

AU - Shiu, Kom Bei

PY - 2020/9/30

Y1 - 2020/9/30

N2 - Synthetic, structural, photophysical, and electrochemical study of [Ir(ppy)2(py)2](BF4) (1(BF4)) and four di-N–N-bridged complexes of [Ir(ppy)2(bpa)]2(BF4)2 (2A(BF4)2), [Ir(ppy)2((cis-bpe))]2(BF4)2 (2B(BF4)2), [Ir(ppy)2(tmp)]2(BF4)2 (2C(BF4)2), and [Ir(ppy)2(bpy)]4(BF4)4 (3(BF4)4) are described with Hppy = 2-phenylpyridine, py = pyridine, N–N = dipyridyl ligands of 1,2-bis(4-pyridyl)ethane (bpa), cis-1,2-bis(4-pyridyl)ethylene (cis-bpe), 1,3-di(4-pyridyl)propane (tmp), and 4,4'-dipyridine (bpy). Five single-crystal structures of 1(PF6), 2A(NO3)2, 2A(PF6)2, 2B(PF6)2, and 3(NO3)4 were determined, supporting the dibridged structures and presence of a variety of stereoisomers. Application of four luminescent complexes, 1(BF4), 2A(BF4)2, 2C(BF4)2, and 3(BF4)4, in solid-state light-emitting electrochemical cells (LECs) is reported. The work demonstrates an effective approach to realize efficient LECs based on dibridged di- and multinuclear cationic transition-metal complexes with a suitably long alkyl spacer in the bridging ligand.

AB - Synthetic, structural, photophysical, and electrochemical study of [Ir(ppy)2(py)2](BF4) (1(BF4)) and four di-N–N-bridged complexes of [Ir(ppy)2(bpa)]2(BF4)2 (2A(BF4)2), [Ir(ppy)2((cis-bpe))]2(BF4)2 (2B(BF4)2), [Ir(ppy)2(tmp)]2(BF4)2 (2C(BF4)2), and [Ir(ppy)2(bpy)]4(BF4)4 (3(BF4)4) are described with Hppy = 2-phenylpyridine, py = pyridine, N–N = dipyridyl ligands of 1,2-bis(4-pyridyl)ethane (bpa), cis-1,2-bis(4-pyridyl)ethylene (cis-bpe), 1,3-di(4-pyridyl)propane (tmp), and 4,4'-dipyridine (bpy). Five single-crystal structures of 1(PF6), 2A(NO3)2, 2A(PF6)2, 2B(PF6)2, and 3(NO3)4 were determined, supporting the dibridged structures and presence of a variety of stereoisomers. Application of four luminescent complexes, 1(BF4), 2A(BF4)2, 2C(BF4)2, and 3(BF4)4, in solid-state light-emitting electrochemical cells (LECs) is reported. The work demonstrates an effective approach to realize efficient LECs based on dibridged di- and multinuclear cationic transition-metal complexes with a suitably long alkyl spacer in the bridging ligand.

KW - Iridium

KW - Ligand effects

KW - Luminescence

KW - Molecular devices

KW - Synthesis design

UR - http://www.scopus.com/inward/record.url?scp=85088984787&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85088984787&partnerID=8YFLogxK

U2 - 10.1002/ejic.202000528

DO - 10.1002/ejic.202000528

M3 - Article

AN - SCOPUS:85088984787

SN - 1434-1948

VL - 2020

SP - 3517

EP - 3526

JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

IS - 36

ER -

Alkyl-Spacer Enhancement in Performance of Light-Emitting Electrochemical Cells

Abstract

Keywords

ASJC Scopus subject areas

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CCDC 1522767: Experimental Crystal Structure Determination

CCDC 1522773: Experimental Crystal Structure Determination

CCDC 1522768: Experimental Crystal Structure Determination

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Alkyl-Spacer Enhancement in Performance of Light-Emitting Electrochemical Cells

Abstract

Keywords

ASJC Scopus subject areas

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Fingerprint

Datasets

CCDC 1522767: Experimental Crystal Structure Determination

CCDC 1522773: Experimental Crystal Structure Determination

CCDC 1522768: Experimental Crystal Structure Determination

Cite this