Unusually Short-Lived Solvent-Dependent Excited State in a Half-Sandwich Ru(II) Complex Induced by Low-Lying 3MC States

Schneider KRA, Traber P, Reichardt C, Weiss H, Kupfer S, Goerls H, Gräfe S, Weigand W, Dietzek B (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Journal of Physical Chemistry A American Chemical Society

Book Volume: 122

Pages Range: 1550-1559

Journal Issue: 6

DOI: 10.1021/acs.jpca.7b11470

Abstract

A ruthenium complex with a half-sandwich geometry ([(p-cymene)Ru(Cl)(curcuminoid)]) was synthesized, characterized, and investigated regarding its ultrafast photophysics. These photophysical investigations of the complex revealed a weak and short-lived emission from the initially populated 1MLCT state and solvent-dependent photoinduced dynamics, where the secondarily populated 3MC state is stabilized by nonpolar solvents. Overall the decay of the 3dd-MC state to the ground state is completed within picoseconds. This short excited-state lifetime is in stark contrast to the typically observed long-lived 3MLCT states with lifetimes of nanoseconds or microseconds in unstrained, octahedral ruthenium complexes but is in good agreement with the findings for distorted octahedral complexes. This is pointing to the half-sandwich geometry as a new and easy approach to study these otherwise often concealed dd states.

Involved external institutions

Leibniz-Institut für Photonische Technologien e.V. DE Germany (DE) Friedrich-Schiller-Universität Jena DE Germany (DE)

How to cite

APA:

Schneider, K.R.A., Traber, P., Reichardt, C., Weiss, H., Kupfer, S., Goerls, H.,... Dietzek, B. (2018). Unusually Short-Lived Solvent-Dependent Excited State in a Half-Sandwich Ru(II) Complex Induced by Low-Lying 3MC States. Journal of Physical Chemistry A, 122(6), 1550-1559. https://doi.org/10.1021/acs.jpca.7b11470

MLA:

Schneider, Kilian R. A., et al. "Unusually Short-Lived Solvent-Dependent Excited State in a Half-Sandwich Ru(II) Complex Induced by Low-Lying 3MC States." Journal of Physical Chemistry A 122.6 (2018): 1550-1559.

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