Observation of cascade f → d → f energy transfer in sensitizing near-infrared (NIR) lanthanide complexes containing the Ru(ii) polypyridine metalloligand. (27th April 2016) - Zhang, Lu-Yin
Abstract : A possible approach to achieve multiple f → d, d → f and cascade f → d → f energy transfer processes in heteronuclear Ru–Ln and Ln1–Ru–Ln2 complexes. Abstract : Distinguishable d → f or f → d energy transfer processes depending on lanthanide ions are observed in isomorphous d–f heterometallic complexes containing the Ru(ii ) metalloligand (LRu ), which lead to sensitized NIR emission (for Nd 3+ and Yb 3+ ) or enhanced red emission of LRu (for Eu 3+ and Tb 3+ ), and represent the first eye-detectable evidence of f → d energy transfer processes in Ln–Ru bimetallic complexes. Based on the systematic luminescence and decay lifetime study, cascade f → d → f energy transfer has been proposed in Ln1–Ru–Ln2 trimetallic systems for improved NIR sensitization.