title: The Synthesis and Properties of Solution Processable a Red Phosphorescent Iridium(III) Complex with Alkyl Group.
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.
authors.forename: B N
authors.initials: BN
authors.lastname: Yang
authors.forename: D M
authors.initials: DM
authors.lastname: Shin
mesh_terms: D019281:Dimerization; D007495:Iridium / Q000737:chemistry*; D008024:Ligands; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet
chemical_list: D008024:Ligands; D012996:Solutions; D007495:Iridium