Photoinduced electron transfer kinetics of linked Ru-Co photocatalyst dyads
- Argonne National Lab. (ANL), Argonne, IL (United States). Division of Chemical Sciences and Engineering
Two new supramolecular photocatalyst dyads based on the [Ru(2,2’-bipyridine)3]2+ photosensitizer linked to a macrocyclic Co(II)tetra(pyridyl) catalyst for proton reduction are reported. The dyads differ primarily in the bridging ligand which links the molecular modules; the first being a short and flexible linker, and the second a longer and electronically conjugated linker. Ultrafast transient optical spectroscopy was used to monitor the photoinduced kinetics of the dyads following visible excitation of the photosensitizer module. Direct comparison of transient spectra and kinetics indicates that there are indeed substantial differences between the ultrafast transient optical spectroscopy of the dyads, but there is no indication of oxidative quenching of the photosensitizer module by the catalyst module. These initial design and characterization studies of the linked Ru(II)—Co(II) dyads provide an important foundation for advanced designs of systems for efficient solar energy conversion by molecular architectures.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1493891
- Journal Information:
- Journal of Photochemistry and Photobiology. A, Chemistry, Vol. 373, Issue C; ISSN 1010-6030
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
Investigation of excited state, reductive quenching, and intramolecular electron transfer of Ru(
Real-Time Visualization of Active Species in a Single-Site Metal–Organic Framework Photocatalyst