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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'-(?,?'-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 (?_PL = 90%; ?_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.

SUBMITTER: Henwood AF

PROVIDER: S-EPMC4906369 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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

Henwood Adam F AF Bansal Ashu K AK Cordes David B DB Slawin Alexandra M Z AM Samuel Ifor D W ID Zysman-Colman Eli E

Journal of materials chemistry. C 20160211 17

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 ...[more]

PMID: 27398216

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