2026-08-20T16:57:31Zhttps://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

Lorenzo Aparicio, María Del Carmen Gómez Gallego, María Del Mar Sierra Rodríguez, Miguel Ángel Ramírez de Arellano, Carmen 2024-12-03T09:04:26Z 2024-12-03T09:04:26Z 2022 10.1039/D1DT04148G https://hdl.handle.net/20.500.14352/111930 https://doi.org/10.1039/D1DT04148G https://pubs.rsc.org/en/content/articlelanding/2022/dt/d1dt04148g 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) eng restricted access Phosphorescent Ir(III) complexes derived from purine nucleobases journal article