Ruthenium tris(bipyridine) complexes: Interchange between photons and electrons in molecular-scale devices and machines

•Ruthenium tris(bipyridine) is a most influential molecule in contemporary chemistry.•Ru-polypyridine complexes exhibit a unique combination of ground- and excited-state properties.•Ru-polypyridine complexes are convenient building blocks in supramolecular photochemistry.•Valuable functions arise fr...

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Bibliographic Details
Published in:Coordination chemistry reviews 2021-04, Vol.433, p.213758, Article 213758
Main Authors: Balzani, Vincenzo, Ceroni, Paola, Credi, Alberto, Venturi, Margherita
Format: Article
Language:English
Subjects:
Dendrimer
Electrochemistry
Photochemistry
Rotaxane
Supramolecular chemistry
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Summary:•Ruthenium tris(bipyridine) is a most influential molecule in contemporary chemistry.•Ru-polypyridine complexes exhibit a unique combination of ground- and excited-state properties.•Ru-polypyridine complexes are convenient building blocks in supramolecular photochemistry.•Valuable functions arise from photoinduced energy/electron transfer in multicomponent systems.•Integration with mechanically interlocked molecules can lead to nanomachines. This review deals with a very peculiar molecule, [Ru(bpy)3]2+ (bpy: 2,2′-bipyridine), and its interaction with photons and electrons. We summarize the properties that make [Ru(bpy)3]2+ and related compounds a unique family of “clever” molecules which find application as components of chemical species capable of processing optical and electrical signals to perform a variety of interesting functions. Examples discussed in the article, that showcase the realization of these concepts with molecular and supramolecular systems, include molecular wires, switches, antennas and mechanical machines.
ISSN:0010-8545
1873-3840
DOI:10.1016/j.ccr.2020.213758