Pyrimidoquinazolinophenanthroline Opens Next Chapter in Design of Bridging Ligands for Artificial Photosynthesis**

Brueckmann J, Müller C, Maisuradze T, Mengele AK, Nauroozi D, Fauth S, Gruber A, Gräfe S, Leopold K, Kupfer S, Dietzek-Ivansic B, Rau S (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Chemistry - A European Journal Wiley

DOI: 10.1002/chem.202200766

Abstract

The synthesis and detailed characterization of a new Ru polypyridine complex containing a heteroditopic bridging ligand with previously unexplored metal-metal distances is presented. Due to the twisted geometry of the novel ligand, the resultant division of the ligand in two distinct subunits leads to steady state as well as excited state properties of the corresponding mononuclear Ru(II) polypyridine complex resembling those of prototype [Ru(bpy)3]²⁺ (bpy=2,2'-bipyridine). The localization of the initially optically excited and the nature of the long-lived excited states on the Ru-facing ligand spheres is evaluated by resonance Raman and fs-TA spectroscopy, respectively, and supported by DFT and TDDFT calculations. Coordination of a second metal (Zn or Rh) to the available bis-pyrimidyl-like coordination sphere strongly influences the frontier orbitals, apparent by, for example, luminescence quenching. Thus, the new bridging ligand motif offers electronic properties, which can be adjusted by the nature of the second metal center. Using the heterodinuclear Ru−Rh complex, visible light-driven reduction of NAD⁺ to NADH was achieved, highlighting the potential of this system for photocatalytic applications.

Authors with CRIS profile

Carolin Müller

Involved external institutions

Universität Ulm

Germany (DE) Friedrich-Schiller-Universität Jena

Germany (DE)

How to cite

APA:

Brueckmann, J., Müller, C., Maisuradze, T., Mengele, A.K., Nauroozi, D., Fauth, S.,... Rau, S. (2022). Pyrimidoquinazolinophenanthroline Opens Next Chapter in Design of Bridging Ligands for Artificial Photosynthesis**. Chemistry - A European Journal. https://doi.org/10.1002/chem.202200766

MLA:

Brueckmann, Jannik, et al. "Pyrimidoquinazolinophenanthroline Opens Next Chapter in Design of Bridging Ligands for Artificial Photosynthesis**." Chemistry - A European Journal (2022).

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