Pieslinger GE, Ramírez-Wierzbicki I, Cadranel A (2022)
Publication Type: Journal article
Publication year: 2022
The excited-state version of the Creutz–Taube ion was prepared via visible light excitation of [(NH3)5RuII(μ-pz)RuII(NH3)5]4+. The resulting excited state is a mixed valence {RuIII–δ(μ-pz⋅−)RuII+δ} transient species, which was characterized using femtosecond transient absorption spectroscopy with vis-NIR detection. Very intense photoinduced intervalence charge transfers were observed at 7500 cm−1, revealing an excited-state electronic coupling element HDA=3750 cm−1. DFT calculations confirm a strongly delocalized excited state. A notable consequence of strong electron delocalization is the nanosecond excited state lifetime, which was exploited in a proof-of-concept intermolecular electron transfer. The excited-state Creutz–Taube ion is established as a reference, and demonstrates that electron delocalization in the excited state can be leveraged for artificial photosynthesis or other photocatalytic schemes based on electron transfer chemistry.
APA:
Pieslinger, G.E., Ramírez-Wierzbicki, I., & Cadranel, A. (2022). The Excited-State Creutz–Taube Ion. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202211747
MLA:
Pieslinger, German E., Ivana Ramírez-Wierzbicki, and Alejandro Cadranel. "The Excited-State Creutz–Taube Ion." Angewandte Chemie International Edition (2022).
BibTeX: Download