4.5 Article

Synthesis and properties of a series of iridium complexes with naphthalenyl imidazo[2,1-b]thiazole derivatives as primary ligands

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JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 985, 期 -, 页码 -

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ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2022.122596

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Phosphorescent material; Iridium complex; Naphthyl-imidazo[2; 1-b]thiazole

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Eight iridium complexes were synthesized for applications in organic optical function materials, using 3-methyl-6-(naphthalen-2-yl)-imidazo[2,1-b]thiazole (mn2mt) and 3-methyl-6-(naphthalene-1-yl)imidazo[2,1-b]thiazole (mn1mt) as primary ligands, and picolinic acid (pic), isoquinoline-3-carboxylic acid (3-IQA), quinoline-2-carboxylic acid (2-QA), and 2-(pyridin-2-yl)phenol (hppy) as auxiliary ligands. The structures, photoluminescence, and electrochemical properties of the complexes were thoroughly investigated. Additionally, LEDs based on InGaN chip excitation showed good performance when using the synthesized IrIII complexes as emitters.
Eight iridium complexes by employing 3-methyl-6-(naphthalen-2-yl)-imidazo [2,1-b] thiazole (mn2mt) and 3-methyl-6-(naphthalene-1-yl)imidazo [2,1-b] thiazole (mn1mt) as the primary ligands, as well as picolinic acid (pic), isoquinoline-3-carboxylic acid (3-IQA), quinoline-2-carboxylic acid (2-QA), and 2-(pyridin-2-yl)phenol (hppy) as the auxiliary ligands, were synthesized for applications where organic optical function materials are required. On top of that, their structures, photoluminescence, and elec-trochemical properties were thoroughly investigated. More specifically, their maximum emission wave-lengths can be detected in the range of 557-609 nm, while the luminous colors span from the green to the standard red region. Interestingly, by employing the synthesized IrIII complexes as emitters, light -emitting diode (LED) chips based on InGaN chip excitation were fabricated, which divulged good perfor-mances.(c) 2022 Elsevier B.V. All rights reserved.

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