Luminescent bis-cyclometallated iridium(III) complexes containing phosphine-based ligands: Influence of the P^N bridge

Braulio Aranda; Pedro Aguirre; Sergio A. Moya; Mickaële Bonneau; J. A. Gareth Williams; Loic Toupet; Muriel Escadeillas; Hubert Le Bozec; Véronique Guerchais

doi:10.1016/j.poly.2014.06.027

Luminescent bis-cyclometallated iridium(III) complexes containing phosphine-based ligands: Influence of the P^N bridge

Braulio Aranda, Pedro Aguirre, Sergio A. Moya, Mickaële Bonneau, J. A. Gareth Williams, Loic Toupet, Muriel Escadeillas, Hubert Le Bozec, Véronique Guerchais^*

^*Corresponding author for this work

Chemistry

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

12 Scopus citations

Abstract

Three cationic bis-cyclometallated iridium complexes [Ir(CN-ppyMe)₂(PN)][PF₆](1-3) with 4-methyl-2-phenylpyridine (ppyMe) as the CN-cyclometallated ligands and 8-(diphenylphosphino)quinoline (Ph₂Pqn, L₁), 2-(diphenylphosphinoamino)pyridine (Ph₂PNHpy, L₂) or 2-(diphenylphosphinoamino) pyrimidine (Ph₂PNHpym, L₃) as PN-ligands, were prepared, and their crystal structures and photoluminescence were investigated. The substitution of an "aromatic C^Ar" (of a quinolyl group) by an "NH" bridge between the phosphine and imine ligating units of the PN ligand dramatically changes the luminescence characteristics of the resulting complexes. The complexes 2-3 featuring the P-NH-N ligand emit in the blue region, whereas complex 1 incorporating the P-C^Ar-N unit displays orange photoluminescence.

Original language	English (US)
Pages (from-to)	120-124
Number of pages	5
Journal	Polyhedron
Volume	86
DOIs	https://doi.org/10.1016/j.poly.2014.06.027
State	Published - Jan 28 2015

Bibliographical note

Funding Information:
This work was supported by LIA CNRS 836 Chili ( MIF ) and FONDECYT (# 1120149 ). B.A. gratefully acknowledges the French Embassy in Chile for a grant. M.B. thanks the CNRS and Durham University for a joint PhD studentship.

Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.

Keywords

Bis-cyclometallated complexes
Blue phosphors
Iridium complexes
Luminescence
Phosphine ligands

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.poly.2014.06.027

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@article{3a41349860bb450284b9e83149bc21ac,

title = "Luminescent bis-cyclometallated iridium(III) complexes containing phosphine-based ligands: Influence of the P^N bridge",

abstract = "Three cationic bis-cyclometallated iridium complexes [Ir(CN-ppyMe)2(PN)][PF6](1-3) with 4-methyl-2-phenylpyridine (ppyMe) as the CN-cyclometallated ligands and 8-(diphenylphosphino)quinoline (Ph2Pqn, L1), 2-(diphenylphosphinoamino)pyridine (Ph2PNHpy, L2) or 2-(diphenylphosphinoamino) pyrimidine (Ph2PNHpym, L3) as PN-ligands, were prepared, and their crystal structures and photoluminescence were investigated. The substitution of an {"}aromatic CAr{"} (of a quinolyl group) by an {"}NH{"} bridge between the phosphine and imine ligating units of the PN ligand dramatically changes the luminescence characteristics of the resulting complexes. The complexes 2-3 featuring the P-NH-N ligand emit in the blue region, whereas complex 1 incorporating the P-CAr-N unit displays orange photoluminescence.",

keywords = "Bis-cyclometallated complexes, Blue phosphors, Iridium complexes, Luminescence, Phosphine ligands",

author = "Braulio Aranda and Pedro Aguirre and Moya, {Sergio A.} and Micka{\"e}le Bonneau and {Gareth Williams}, {J. A.} and Loic Toupet and Muriel Escadeillas and {Le Bozec}, Hubert and V{\'e}ronique Guerchais",

note = "Funding Information: This work was supported by LIA CNRS 836 Chili ( MIF ) and FONDECYT (# 1120149 ). B.A. gratefully acknowledges the French Embassy in Chile for a grant. M.B. thanks the CNRS and Durham University for a joint PhD studentship. Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd. All rights reserved.",

year = "2015",

month = jan,

day = "28",

doi = "10.1016/j.poly.2014.06.027",

language = "English (US)",

volume = "86",

pages = "120--124",

journal = "Polyhedron",

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T1 - Luminescent bis-cyclometallated iridium(III) complexes containing phosphine-based ligands

T2 - Influence of the P^N bridge

AU - Aranda, Braulio

AU - Aguirre, Pedro

AU - Moya, Sergio A.

AU - Bonneau, Mickaële

AU - Gareth Williams, J. A.

AU - Toupet, Loic

AU - Escadeillas, Muriel

AU - Le Bozec, Hubert

AU - Guerchais, Véronique

N1 - Funding Information: This work was supported by LIA CNRS 836 Chili ( MIF ) and FONDECYT (# 1120149 ). B.A. gratefully acknowledges the French Embassy in Chile for a grant. M.B. thanks the CNRS and Durham University for a joint PhD studentship. Publisher Copyright: © 2014 Elsevier Ltd. All rights reserved.

PY - 2015/1/28

Y1 - 2015/1/28

N2 - Three cationic bis-cyclometallated iridium complexes [Ir(CN-ppyMe)2(PN)][PF6](1-3) with 4-methyl-2-phenylpyridine (ppyMe) as the CN-cyclometallated ligands and 8-(diphenylphosphino)quinoline (Ph2Pqn, L1), 2-(diphenylphosphinoamino)pyridine (Ph2PNHpy, L2) or 2-(diphenylphosphinoamino) pyrimidine (Ph2PNHpym, L3) as PN-ligands, were prepared, and their crystal structures and photoluminescence were investigated. The substitution of an "aromatic CAr" (of a quinolyl group) by an "NH" bridge between the phosphine and imine ligating units of the PN ligand dramatically changes the luminescence characteristics of the resulting complexes. The complexes 2-3 featuring the P-NH-N ligand emit in the blue region, whereas complex 1 incorporating the P-CAr-N unit displays orange photoluminescence.

AB - Three cationic bis-cyclometallated iridium complexes [Ir(CN-ppyMe)2(PN)][PF6](1-3) with 4-methyl-2-phenylpyridine (ppyMe) as the CN-cyclometallated ligands and 8-(diphenylphosphino)quinoline (Ph2Pqn, L1), 2-(diphenylphosphinoamino)pyridine (Ph2PNHpy, L2) or 2-(diphenylphosphinoamino) pyrimidine (Ph2PNHpym, L3) as PN-ligands, were prepared, and their crystal structures and photoluminescence were investigated. The substitution of an "aromatic CAr" (of a quinolyl group) by an "NH" bridge between the phosphine and imine ligating units of the PN ligand dramatically changes the luminescence characteristics of the resulting complexes. The complexes 2-3 featuring the P-NH-N ligand emit in the blue region, whereas complex 1 incorporating the P-CAr-N unit displays orange photoluminescence.

KW - Bis-cyclometallated complexes

KW - Blue phosphors

KW - Iridium complexes

KW - Luminescence

KW - Phosphine ligands

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DO - 10.1016/j.poly.2014.06.027

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JO - Polyhedron

JF - Polyhedron

ER -

Luminescent bis-cyclometallated iridium(III) complexes containing phosphine-based ligands: Influence of the P^N bridge

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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