2026-08-22T00:39:53Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1119302025-07-17T16:43:24Zcom_20.500.14352_14col_20.500.14352_15

Phosphorescent Ir(III) complexes derived from purine nucleobases Lorenzo Aparicio, María Del Carmen Gómez Gallego, María Del Mar Sierra Rodríguez, Miguel Ángel Ramírez de Arellano, Carmen 547 546 Iridium complexes Phosphorescence Nucleobase Nucleoside Nucleotide Química 2306 Química Orgánica 2303 Química Inorgánica We report the preparation and the study of new types of neutral and cationic phosphorescent heteroleptic Ir(III) complexes derived from 6-phenylpurine nucleosides and nucleotides. Neutral complexes of general formula Ir(C^N)2(acac) 7, and 8a–c (HC^N = 9-substituted-6-phenyl purine) are orange-red emissive upon photoexcitation, with short lifetimes and good quantum yields (0.42–0.65) in both PMMA films and 2-MeTHF at room temperature. In turn, cationic complexes [Ir(C^N)2(dtb-bpy)][PF6] 9, 12a and 12c (dtb-bpy = 4,4′-di-tert-butyl-2,2′-dipyridine) are yellow-green emitters with moderate quantum yields (0.24–0.32) Ministerio de Ciencia e Innovación (España) Depto. de Química Orgánica Fac. de Ciencias Químicas TRUE pub 2024-12-03T09:04:26Z 2024-12-03T09:04:26Z 2022 journal article AM https://hdl.handle.net/20.500.14352/111930 XXXX-XXXX 10.1039/D1DT04148G eng restricted access application/pdf RSC