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The Synthesis and Properties of Solution Processable a Red Phosphorescent Iridium(III) Complex With Alkyl Group

The Synthesis and Properties of Solution Processable a Red Phosphorescent Iridium(III) Complex With Alkyl Group

B N Yang, D M Shin

J Nanosci Nanotechnol. 2016 Mar;16(3):2696-700.

PMID: 27455692

Abstract:

The (TMP-HT)2Ir(acac) was synthesized with 2-bromo-4-(trifluoromethyl)pyridine and 5-hexyl-2-thiopheneboronic acid pinacol ester for organic light-emitting diodes (OLEDs). This material was designed on the basis of Gaussian modeling program results. The ligands have both the electron donor and acceptor in a molecule. There are pyridyl group which decrease electron density and thiophene group which increase electron density. Therefore, it showed intramolecular charge transfer (ICT) property. For solution process, the ligand have a alkyl group which has hydrophobic property. The (TMP-HT)21r(acac) was synthesized by Suzuki coupling reaction and Nonoyama reaction. The (TMP-HT)21r(acac) emitted at approximately 600 nm. The device structures were ITO/PEDOT (500 Å)/TFB (170 Å)/PVK:PBD (40%): (TMPHT)21r(acac) (300 Å:10%)/BH:BD5% (150 Å)/L201(50 Å)/Liq(200 Å)/Al. Electroluminescent properties were observed with devices doped with various doping concentrations.

Chemicals Related in the Paper:

Catalog Number	Product Name	CAS Number	Price
AP1218790409	3-(Trifluoromethyl)-1H-pyrazole-4-boronic acid pinacol ester	1218790-40-9	Price
AP579503596	5'-Hexyl-2,2'-bithiophene-5-boronic acid pinacol ester	579503-59-6	Price
AP917985547	5-Hexyl-2-thiopheneboronic acid pinacol ester	917985-54-7	Price

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