Synthesis and photophysics of a novel photocatalyst for hydrogen production based on a tetrapyridoacridine bridging ligand

Karnahl M, Kuhnt C, Heinemann FW, Schmitt M, Rau S, Popp J, Dietzek B (2012)

Publication Status: Published

Publication Type: Journal article

Publication year: 2012

Journal

Chemical Physics Elsevier

Publisher: ELSEVIER SCIENCE BV

Book Volume: 393

Pages Range: 65-73

Journal Issue: 1

DOI: 10.1016/j.chemphys.2011.11.027

Abstract

Molecular photocatalysts allow for selectively tuning their function on a molecular level based on an in-depth understanding of their chemical and photophysical properties. This contribution reports the synthesis and photophysical characterization of the novel molecular photocatalyst [(tbbpy)(2)Ru(tpac)PdCl(2)](2+) RutpacPd (with tpac = tetrapyrido[3,2-a:2',3'-c:3 '',2 ''-h:2''',3'''-j]acridine) and its mononuclear building block. Furthermore, detailed photocatalytic activity measurements of RutpacPd are presented. The introduction of the tpac-ligand into the molecular framework offers a potential route to reduce the impact of water as compared to the well-studied class of RutpphzPd (with tpphz = tetrapyrido[3,2-a:2',3'-c:300,2 ''-h: 2''',3'''-j] phenazine) complexes. The distinct impact of water on the electron-transfer processes in tpphz-ligands stems from the possibility of water to form hydrogen bonds to the phenazine nitrogen atoms and will potentially reduced when replacing the phenazine by the acridine unit. The effect of this structural variation on the catalytic properties and the underlying ultrafast intramolecular charge transfer behavior will be discussed in detail. (C) 2011 Elsevier B. V. All rights reserved.

Authors with CRIS profile

Frank Wilhelm Heinemann Lehrstuhl für Anorganische und Allgemeine Chemie

Involved external institutions

Uppsala University SE Sweden (SE) Friedrich-Schiller-Universität Jena DE Germany (DE) Universität Ulm DE Germany (DE) Leibniz-Institut für Photonische Technologien e.V. DE Germany (DE)

How to cite

APA:

Karnahl, M., Kuhnt, C., Heinemann, F.W., Schmitt, M., Rau, S., Popp, J., & Dietzek, B. (2012). Synthesis and photophysics of a novel photocatalyst for hydrogen production based on a tetrapyridoacridine bridging ligand. Chemical Physics, 393(1), 65-73. https://doi.org/10.1016/j.chemphys.2011.11.027

MLA:

Karnahl, Michael, et al. "Synthesis and photophysics of a novel photocatalyst for hydrogen production based on a tetrapyridoacridine bridging ligand." Chemical Physics 393.1 (2012): 65-73.

BibTeX: Download