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

10 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 = "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 1522770: Experimental Crystal Structure Determination

CCDC 1522773: Experimental Crystal Structure Determination

CCDC 1522769: Experimental Crystal Structure Determination

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Datasets

CCDC 1522770: Experimental Crystal Structure Determination

CCDC 1522773: Experimental Crystal Structure Determination

CCDC 1522769: Experimental Crystal Structure Determination

Cite this