Solubilised bright blue-emitting iridium complexes for solution processed OLEDs

Adam F. Henwood; Ashu K. Bansal; David B. Cordes; Alexandra M. Z. Slawin; Ifor D. W. Samuel; Eli Zysman-Colman

doi:10.1039/C6TC00151C

Solubilised bright blue-emitting iridium complexes for solution processed OLEDs

Adam F. Henwood, Ashu K. Bansal, David B. Cordes, Alexandra M. Z. Slawin, Ifor D. W. Samuel, Eli Zysman-Colman

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

Abstract

Combining a sterically bulky, electron-deficient 2-(2,4-difluorophenyl)-4-(2,4,6- trimethylphenyl)pyridine (dFMesppy) cyclometalating C^{^}N ligand with an electron rich, highly rigidified 1,1’-(α,α’-o-xylylene)-2,2’-biimidazole (o-xylbiim) N^{^}N ligand gives an iridium complex, [Ir(dFMesppy)₂(o-Xylbiim)](PF6), that achieves extraordinarily bright blue emission (Φ_PL = 90%; λ_max = 459 nm in MeCN) for a cationic iridium complex. This complex is compared with two reference complexes bearing 4,4’-di-tert-butyl-2,2’- bipyridine, and solution-processed organic light emitting diodes (OLEDs) have been fabricated from these materials.

Original language	English
Pages (from-to)	3726-3737
Number of pages	12
Journal	Journal of Materials Chemistry C
Volume	4
Issue number	17
Early online date	4 Feb 2016
DOIs	https://doi.org/10.1039/C6TC00151C
Publication status	Published - 7 May 2016

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10.1039/C6TC00151CLicence: CC BY

Zysman-Colman_2016_JMCC_Solubilised_CCBY
Copyright 2016 the Authors. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (http://creativecommons.org/licenses/by/3.0/).
Final published version, 3.58 MBLicence: CC BY

Cite this

@article{232c436ae6544a8d825e31541db71216,

title = "Solubilised bright blue-emitting iridium complexes for solution processed OLEDs",

abstract = "Combining a sterically bulky, electron-deficient 2-(2,4-difluorophenyl)-4-(2,4,6- trimethylphenyl)pyridine (dFMesppy) cyclometalating C^N ligand with an electron rich, highly rigidified 1,1{\textquoteright}-(α,α{\textquoteright}-o-xylylene)-2,2{\textquoteright}-biimidazole (o-xylbiim) N^N ligand gives an iridium complex, [Ir(dFMesppy)2(o-Xylbiim)](PF6), that achieves extraordinarily bright blue emission (ΦPL = 90%; λmax = 459 nm in MeCN) for a cationic iridium complex. This complex is compared with two reference complexes bearing 4,4{\textquoteright}-di-tert-butyl-2,2{\textquoteright}- bipyridine, and solution-processed organic light emitting diodes (OLEDs) have been fabricated from these materials.",

author = "Henwood, {Adam F.} and Bansal, {Ashu K.} and Cordes, {David B.} and Slawin, {Alexandra M. Z.} and Samuel, {Ifor D. W.} and Eli Zysman-Colman",

note = "EZ-C acknowledges the University of St Andrews for financial support. IDWS and AKB acknowledge support from EPSRC (EP/J01771X). The authors would like to thank the Engineering and Physical Sciences Research Council for financial support for Adam Henwood: EPSRC DTG Grants: EP/J500549/1; EP/K503162/1; EP/L505097/1.",

year = "2016",

month = may,

day = "7",

doi = "10.1039/C6TC00151C",

language = "English",

volume = "4",

pages = "3726--3737",

journal = "Journal of Materials Chemistry C",

issn = "2050-7526",

publisher = "ROYAL SOC CHEMISTRY",

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TY - JOUR

T1 - Solubilised bright blue-emitting iridium complexes for solution processed OLEDs

AU - Henwood, Adam F.

AU - Bansal, Ashu K.

AU - Cordes, David B.

AU - Slawin, Alexandra M. Z.

AU - Samuel, Ifor D. W.

AU - Zysman-Colman, Eli

N1 - EZ-C acknowledges the University of St Andrews for financial support. IDWS and AKB acknowledge support from EPSRC (EP/J01771X). The authors would like to thank the Engineering and Physical Sciences Research Council for financial support for Adam Henwood: EPSRC DTG Grants: EP/J500549/1; EP/K503162/1; EP/L505097/1.

PY - 2016/5/7

Y1 - 2016/5/7

N2 - Combining a sterically bulky, electron-deficient 2-(2,4-difluorophenyl)-4-(2,4,6- trimethylphenyl)pyridine (dFMesppy) cyclometalating C^N ligand with an electron rich, highly rigidified 1,1’-(α,α’-o-xylylene)-2,2’-biimidazole (o-xylbiim) N^N ligand gives an iridium complex, [Ir(dFMesppy)2(o-Xylbiim)](PF6), that achieves extraordinarily bright blue emission (ΦPL = 90%; λmax = 459 nm in MeCN) for a cationic iridium complex. This complex is compared with two reference complexes bearing 4,4’-di-tert-butyl-2,2’- bipyridine, and solution-processed organic light emitting diodes (OLEDs) have been fabricated from these materials.

AB - Combining a sterically bulky, electron-deficient 2-(2,4-difluorophenyl)-4-(2,4,6- trimethylphenyl)pyridine (dFMesppy) cyclometalating C^N ligand with an electron rich, highly rigidified 1,1’-(α,α’-o-xylylene)-2,2’-biimidazole (o-xylbiim) N^N ligand gives an iridium complex, [Ir(dFMesppy)2(o-Xylbiim)](PF6), that achieves extraordinarily bright blue emission (ΦPL = 90%; λmax = 459 nm in MeCN) for a cationic iridium complex. This complex is compared with two reference complexes bearing 4,4’-di-tert-butyl-2,2’- bipyridine, and solution-processed organic light emitting diodes (OLEDs) have been fabricated from these materials.

UR - http://www.rsc.org/suppdata/c6/tc/c6tc00151c/c6tc00151c1.pdf

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DO - 10.1039/C6TC00151C

M3 - Article

SN - 2050-7526

VL - 4

SP - 3726

EP - 3737

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 17

ER -

Solubilised bright blue-emitting iridium complexes for solution processed OLEDs

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Solubilised bright blue-emitting iridium complexes for solution processed OLEDs

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Blue-Emitting Phospors: Blue-emitting Phosphors for Solid State Lighting Applications

Challening the Limits of Photonics: stru: Challenging the Limits of Photonics: Structured Light

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