169435 20260227133540.0 doi 10.1021/acs.inorgchem.9b03509 sideral 117390 ART-2020-117390 eng Boudreault, Pierre-Luc T. Preparation and Photophysical Properties of Bis(tridentate) Iridium(III) Emitters: Pincer Coordination of 2, 6-Di(2-pyridyl)phenyl 2020 The way to prepare molecular emitters [5t + 4t'] of iridium(III) with a 5t ligand derived from the abstraction of the hydrogen atom at position 2 of the aryl group of 1, 3-di(2-pyridyl)benzene (dpybH) is shown. In addition, the photophysical properties of the new emitters are compared with those of their counterparts resulting from the deprotonation of 1, 3-di(2-pyridyl)-4, 6-dimethylbenzene (dpyMebH), at the same position, which are also synthesized. Treatment of 0.5 equiv of the dimer [Ir(µ-Cl)(¿2-COE)2]2 (COE = cyclooctene) with 1.0 equiv of Hg(dpyb)Cl leads to the iridium(III) derivative IrCl2{¿3-N, C, N-(dpyb)}(¿2-COE) (3), which reacts with 2-(1H-imidazol-2-yl)-6-phenylpyridine (HNImpyC6H5) and 2-(1H-benzimidazol-2-yl)-6-phenylpyridine (HNBzimpyC6H5) in the presence of Na2CO3 to give Ir{¿3-C, N, N-(NImpyC6H4)}{¿3-N, C, N-(dpyb)} (4) and Ir{¿3-C, N, N-(NBzimpyC6H4)}{¿3-N, C, N-(dpyb)} (5), respectively. Similar reactions of the Williams''s dimer [IrCl(µ-Cl){¿3-N, C, N-(dpyMeb)}]2 with HNImpyC6H5 and HNBzimpyC6H5 in the presence of Na2CO3 afford the dimethylated counterparts Ir{¿3-C, N, N-(NImpyC6H4)}{¿3-N, C, N-(dpyMeb)} (6) and Ir{¿3-C, N, N-(NBzimpyC6H4)}{¿3-N, C, N-(dpyMeb)} (7), whereas 2-(6-phenylpyridine-2-yl)-1H-indole (HIndpyC6H5) initially gives IrH{¿2-N, N-(IndpyC6H5)}{¿3-N, C, N-(dpyMeb)} (8) and subsequently Ir{¿3-C, N, N-(IndpyC6H4)}{¿3-N, C, N-(dpyMeb)} (9). Complexes 4-7 are phosphorescent green emitters (¿em 490-550 nm), whereas 9 is greenish yellow emissive (¿em 547-624 nm). They display lifetimes in the range 0.5-9.7 µs and quantum yields in both doped poly(methyl)methacrylate films and in 2-methyltetrahydrofuran at room temperature depending upon the ligands: 0.5-0.7 for 6 and 7, about 0.4 for 4 and 5, and 0.3-0.2 for 9. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/E06-17R info:eu-repo/grantAgreement/ES/DGA/LMP148-18 info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/CTQ2017-82935-P info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/RED2018-102387-T info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 5.165 2020 CHEMISTRY, INORGANIC & NUCLEAR 5 / 45 = 0.111 2020 Q1 T1 1.348 2020 Chemistry (miscellaneous) 2020 Q1 Physical and Theoretical Chemistry 2020 Q1 Inorganic Chemistry 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Esteruelas, Miguel A. (orcid)0000-0002-4829-7590 Gómez-Bautista, Daniel Izquierdo, Susana (orcid)0000-0002-6608-1910 López, Ana M. Universidad de Zaragoza (orcid)0000-0001-7183-4975 Oñate, Enrique (orcid)0000-0003-2094-719X Raga, Esther (orcid)0000-0001-8609-7947 Tsai, Jui-Yi 2010 760 Universidad de Zaragoza Dpto. Química Inorgánica Área Química Inorgánica 59, 6 (2020), 3838-3849 Inorg. chem. Inorganic Chemistry 0020-1669 801584 http://zaguan.unizar.es/record/169435/files/texto_completo.pdf Postprint 1062820 http://zaguan.unizar.es/record/169435/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:169435 articulos driver 2026-02-27-12:35:35 ARTICLE