title: Modified bibenzimidazole ligands as spectator ligands in photoactive molecular functional Ru-polypyridine units? Implications from spectroscopy.
abstract: The photophysical properties of Ruthenium-bipyridine complexes bearing a bibenzimidazole ligand were investigated. The nitrogens on the bibenzimidazole-ligand were protected, by adding either a phenylene group or a 1,2-ethandiyl group, to remove the photophysical dependence of the complex on the protonation state of the bibenzimidazole ligand. This protection results in the bibenzimidazole ligand contributing to the MLCT transition, which is experimentally evidenced by (resonance) Raman scattering in concert with DFT calculations for a detailed mode assignment in the (resonance) Raman spectra.
authors.affiliation: Institute of Physical Chemistry and Jena Center for Soft Matter, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany. benjamin.dietzek@uni-jena.de.
authors.forename: Julia
authors.initials: J
authors.lastname: Meyer-Ilse
authors.forename: Stefan
authors.initials: S
authors.lastname: Bauroth
authors.forename: Maximilian
authors.initials: M
authors.lastname: Bräutigam
authors.forename: Michael
authors.initials: M
authors.lastname: Schmitt
authors.forename: Jürgen
authors.initials: J
authors.lastname: Popp
authors.forename: Rainer
authors.initials: R
authors.lastname: Beckert
authors.forename: Nils
authors.initials: N
authors.lastname: Rockstroh
authors.forename: T David
authors.initials: TD
authors.lastname: Pilz
authors.forename: Katharina
authors.initials: K
authors.lastname: Monczak
authors.forename: Frank W
authors.initials: FW
authors.lastname: Heinemann
authors.forename: Sven
authors.initials: S
authors.lastname: Rau
authors.forename: Benjamin
authors.initials: B
authors.lastname: Dietzek
mesh_terms: D001562:Benzimidazoles / Q000737:chemistry*; D008024:Ligands; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D055668:Photochemical Processes; D011725:Pyridines / Q000737:chemistry*; D011789:Quantum Theory; D012428:Ruthenium / Q000737:chemistry*; D013059:Spectrum Analysis, Raman
chemical_list: D001562:Benzimidazoles; D008024:Ligands; D009942:Organometallic Compounds; D011725:Pyridines; D012428:Ruthenium; C031000:benzimidazole