Deactivation Pathways for Metal-to-Ligand Charge-Transfer Excited States of Ruthenium Polypyridyl Complexes with Triphenylphosphine as a Ligand

2011 ◽  
Vol 115 (50) ◽  
pp. 14235-14242 ◽  
Author(s):  
Sergey V. Litke ◽  
Aleksei Yu. Ershov ◽  
Thomas J. Meyer
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Ruthenium Polypyridyl ◽  
Polypyridyl Complexes ◽  
Ligand Charge Transfer ◽  
Ruthenium Polypyridyl Complexes

scholarly journals Quantitative description of MLCT transitions in ruthenium polypyridyl complexes probed by two-photon absorption spectroscopy

2018 ◽  
Vol 190 ◽  
pp. 03012
Author(s):  
Charles W. Stark ◽  
M. Rammo ◽  
K. Petritšenko ◽  
J. Pahapill ◽  
A. Mikhaylov ◽  
...  
Keyword(s):  
Cross Section ◽  
Quantitative Description ◽  
Photon Absorption ◽  
Charge Transfer Transition ◽  
Ruthenium Polypyridyl ◽  
Polypyridyl Complexes ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Ligand Charge Transfer ◽  
Ruthenium Polypyridyl Complexes

Quantitative two-photon absorption (2PA) cross section and 2PA spectrum measurements were used to determine the molecular electric dipole change in the metal-to-ligand charge-transfer transition of ruthenium(II) tris-complexes of 2,2’-bipyridine ([Ru(bpy)3]2+) and 1,10-phenanthroline ([Ru(phen)3]2+) in several solvents.

Tuning of the lowest excited states in mixed ruthenium(ii) polypyridyl complexes having RuN6 cores by the conformation of the ancillary ligand. Emission from a 3ligand-to-ligand-charge-transfer state

2016 ◽  
Vol 40 (6) ◽  
pp. 5002-5009 ◽  
Author(s):  
Nirmal K. Shee ◽  
Michael G. B. Drew ◽  
Dipankar Datta
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Excited States ◽  
Small Difference ◽  
Charge Transfer State ◽  
Ancillary Ligand ◽  
Polypyridyl Complexes ◽  
Ligand Charge Transfer ◽  
Transfer State

A small difference in the conformation of an ancillary ligand L determines the lowest excited state in [Ru(bpy)2L]2+ and [Ru(phen)2L]2+.

Synthesis and Photochemical Properties of Re(I) Tricarbonyl Complexes Bound to Thione and Thiazole-2-ylidene Ligands

2020 ◽  
Author(s):  
Matthew Stout ◽  
Brian Skelton ◽  
Alexandre N. Sobolev ◽  
Paolo Raiteri ◽  
Massimiliano Massi ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Ligand Exchange ◽  
Ligand Substitution ◽  
Bidentate Ligand ◽  
The Other ◽  
Ligand Exchange Reaction ◽  
Multiple Products ◽  
Ligand Charge Transfer ◽  
Photochemical Properties

<p>Three Re(I) tricarbonyl complexes, with general formulation Re(N^L)(CO)<sub>3</sub>X (where N^L is a bidentate ligand containing a pyridine functionalized in the position 2 with a thione or a thiazol-2-ylidene group and X is either chloro or bromo) were synthesized and their reactivity explored in terms of solvent-dependent ligand substitution, both in the ground and excited states. When dissolved in acetonitrile, the complexes bound to the thione ligand underwent ligand exchange with the solvent resulting in the formation of Re(NCMe)<sub>2</sub>(CO)<sub>3</sub>X. The exchange was found to be reversible, and the starting complex was reformed upon removal of the solvent. On the other hand, the complexes appeared inert in dichloromethane or acetone. Conversely, the complex bound to the thiazole-2-ylidene ligand did not display any ligand exchange reaction in the dark, but underwent photoactivated ligand substitution when excited to its lowest metal-to-ligand charge transfer manifold. Photolysis of this complex in acetonitrile generated multiple products, including Re(I) tricarbonyl and dicarbonyl solvato-complexes as well as free thiazole-2-ylidene ligand.</p>

Influence of the Attaching Group and Substituted Position in the Photosensitization Behavior of Ruthenium Polypyridyl Complexes

1999 ◽  
Vol 38 (26) ◽  
pp. 6320-6322 ◽  
Author(s):  
Yuan-jun Hou ◽  
Pu-hui Xie ◽  
Bao-wen Zhang ◽  
Yi Cao ◽  
Xu-rui Xiao ◽  
...  
Keyword(s):  
Ruthenium Polypyridyl ◽  
Polypyridyl Complexes ◽  
Ruthenium Polypyridyl Complexes

Modulation of Internuclear Communication in Multinuclear Ruthenium(II) Polypyridyl Complexes

2003 ◽  
Vol 68 (8) ◽  
pp. 1467-1487 ◽  
Author(s):  
Wesley R. Browne ◽  
Frances Weldon ◽  
Adrian Guckian ◽  
Johannes G. Vos
Keyword(s):  
Ground State ◽  
Weak Interactions ◽  
Electrochemical Studies ◽  
Protonation State ◽  
Ruthenium Polypyridyl ◽  
Bridging Ligands ◽  
Polypyridyl Complexes ◽  
Bridging Ligand ◽  
Dinuclear Ruthenium ◽  
Ruthenium Polypyridyl Complexes

The syntheses and characterisation of a series of mononuclear and dinuclear ruthenium polypyridyl complexes based on the bridging ligands 1,3-bis-[5-(2-pyridyl)-1H-1,2,4-triazol-3-yl]benzene, 1,4-bis-[5-(2-pyridyl)-1H-1,2,4-triazol-3-yl]benzene, 2,5-bis-[5-(2-pyridyl)-1H-1,2,4-triazol-3-yl]thiophene, 2,5-bis-[5-pyrazinyl-1H-1,2,4-triazol-3-yl]thiophene are reported. Electrochemical studies indicate that in these systems, the ground state interaction is critically dependent on the nature of the bridging ligand and its protonation state, with strong and weak interactions being observed for thiophene- and phenylene-bridged complexes, respectively.

Sign in / Sign up

Export Citation Format

Share Document