Abstract
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.
Highlights
Ruthenium(II) polypyridyl complexes are well studied systems with the ability to form metal-to-ligand charge-transfer (MLCT) excited states with visible light absorption
We investigated the 2PA spectra of [Ru(bpy)3]2+ and [Ru(phen)3]2+ dissolved in water (H2O), dimethylsulfoxide (DMSO), acetonitrile (ACN), and dichloromethane (DCM), and use a two-level model of 2PA applied to the lowest-energy transitions to estimate the value of in different solvents
To the lowest-energy transitions, we can evaluate the difference in the ground- and excited state dipole moments according to the equation:
Summary
Ruthenium(II) polypyridyl complexes are well studied systems with the ability to form metal-to-ligand charge-transfer (MLCT) excited states with visible light absorption. This charge-transfer makes these complexes useful for numerous applications, and makes them sensitive to local electric fields due to the formation of a dipole moment, .
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
