TY - JOUR AU - Leiggener, Claudia AU - Dupont, Nathalie AU - Liu, Shi-Xia AU - Goze, Christine AU - Decurtins, Silvio AU - Breitler, Elvira AU - Hauser, Andreas PY - 2007/10/24 Y2 - 2024/03/28 TI - Dual Luminescence and Long-Lived Charge-Separated States in Donor-Acceptor Assemblies Based on Tetrathiafulvalene-Fused Ruthenium(II)-Polypyridine Complexes JF - CHIMIA JA - Chimia VL - 61 IS - 10 SE - Scientific Articles DO - 10.2533/chimia.2007.621 UR - https://www.chimia.ch/chimia/article/view/2007_621 SP - 621 AB - The creation of long-lived charge-separated states in donor–acceptor assemblies has been the goal of many studies aimed at mimicking the primary processes in photosynthesis. Here we present such assemblies based on tetrathiafulvalene (TTF) as electron donor and a dipyridophenazine (dppz) unit as electron acceptor in the form of a fused ligand (TTF-dppz) coordinated to ruthenium(II) via the dipyrido coordination site and with 2,2?-bipyridine (bpy) as auxiliary ligand, namely [Ru(bpy)3?x(TTF-dppz)x]2+ (x = 1?3). For x = 2, irradiation into the metal to dppz charge transfer transition results in electron transfer from TTF to ruthenium, thus creating a charge-separated state best described by [(TTF+-dppz)Ru(dppz?-TTF)(bpy)]2+ with a lifetime of 2.5 ?s in dichloromethane. ER -