Journal article
Photophysical Studies of Helicate and Mesocate Double-Stranded Dinuclear Ru(II) Complexes
Xinyue Xu, Samuel JP Marlton, Kate L Flint, Rohan J Hudson, F Richard Keene, Christopher R Hall, Trevor A Smith
Journal of Physical Chemistry A | American Chemical Society | Published : 2024
Abstract
The metal–ligand charge transfer (3MLCT) and phosphorescence-quenching metal-centered (3MC) states of the helicate and mesocate diastereoisomers of a double-stranded dinuclear polypyridylruthenium(II) complex have been investigated using ultrafast transient absorption spectroscopy. At 294 K, transient signals of the helicate decayed significantly slower than those of the mesocate, whereas at 77 K, no clear contrast in kinetics was observed. Contributions to excited-state decay from high-lying 3MLCT states were identified at both temperatures. Spectroscopic data (294 K) suggest that the 3MC state of the helicate lies above the 3MLCT and that the reverse is true for the mesocate; this was furt..
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Awarded by Australian Research Council
Awarded by Australian Government through the Australian Renewable Energy Agency (ARENA)
Funding Acknowledgements
This work was supported by the Australian Government through the Australian Research Council (ARC) under the Centre of Excellence (CE170100026) and Linkage and Equipment (LE200100051) schemes. T.A.S. further acknowledges the Infrastructure Scheme of the Australian Centre for Advanced Photovoltaics (ACAP) program funded by the Australian Government through the Australian Renewable Energy Agency (ARENA). C.R.H. is the recipient of an Australian Research Council Future Fellowship (FT210100113), funded by the Australian Government. We also acknowledge support through the University of Melbourne Spartan High Performance Computing facility.