Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain.
Centro de Innovación en Química Avanzada (ORFEO-CINQA), Spain.
Dalton Trans. 2022 Mar 29;51(13):5138-5150. doi: 10.1039/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)(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)(dtb-bpy)][PF] 9, 12a and 12c (dtb-bpy = 4,4'-di--butyl-2,2'-dipyridine) are yellow-green emitters with moderate quantum yields (0.24-0.32).
我们报告了新型中性和阳离子磷光杂化铱(III)配合物的制备和研究，这些配合物源自 6-苯基嘌呤核苷和核苷酸。中性配合物的通式为 Ir(C^N)(acac)7 和 8a-c（HC^N = 9-取代-6-苯基嘌呤），在光激发下呈现橙红色发光，具有短寿命和良好的量子产率（0.42-0.65），无论是在 PMMA 薄膜中还是在 2-MeTHF 室温下均如此。相反，阳离子配合物[Ir(C^N)(dtb-bpy)][PF]9、12a 和 12c（dtb-bpy = 4,4'-二--丁基-2,2'-联吡啶）则是黄色绿色发射体，具有中等量子产率（0.24-0.32）。
