Carbene based photochemical molecular assemblies for solar driven hydrogen generation.

Peuntinger K, Pilz TD, Staehle R, Schaub M, Kaufhold S, Petermann L, Wunderlin M, Goerls H, Heinemann FW, Li J, Drewello T, Vos JG, Guldi DM, Rau S (2014)

Publication Status: Published

Publication Type: Journal article

Publication year: 2014

Journal

Dalton Transactions Royal Society of Chemistry

Book Volume: 43

Pages Range: 13683-13695

Journal Issue: 36

DOI: 10.1039/c4dt01546k

Abstract

Novel photocatalysts based on ruthenium complexes with NHC (N-heterocyclic carbene)-type bridging ligands have been prepared and structurally and photophysically characterised. The identity of the NHC-unit of the bridging ligand was established unambiguously by means of X-ray structural analysis of a heterodinuclear ruthenium-silver complex. The photophysical data indicate ultrafast intersystem crossing into an emissive and a non-emissive triplet excited state after excitation of the ruthenium centre. Exceptionally high luminescence quantum yields of up to 39% and long lifetimes of up to 2 μs are some of the triplet excited state characteristics. Preliminary studies into the visible light driven photocatalytic hydrogen formation show no induction phase and constant turnover frequencies that are independent on the concentration of the photocatalyst. In conclusion this supports the notion of a stable assembly under photocatalytic conditions.

Authors with CRIS profile

Katrin Peuntinger Lehrstuhl für Physikalische Chemie I Robert Staehle Professur für Anorganische Chemie Frank Wilhelm Heinemann Lehrstuhl für Anorganische und Allgemeine Chemie Jing Li Professur für Physikalische Chemie Thomas Drewello Professur für Physikalische Chemie Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Involved external institutions

Universität Ulm DE Germany (DE) Dublin City University (DCU) IE Ireland (IE) Friedrich-Schiller-Universität Jena DE Germany (DE)

How to cite

APA:

Peuntinger, K., Pilz, T.D., Staehle, R., Schaub, M., Kaufhold, S., Petermann, L.,... Rau, S. (2014). Carbene based photochemical molecular assemblies for solar driven hydrogen generation. Dalton Transactions, 43(36), 13683-13695. https://dx.doi.org/10.1039/c4dt01546k

MLA:

Peuntinger, Katrin, et al. "Carbene based photochemical molecular assemblies for solar driven hydrogen generation." Dalton Transactions 43.36 (2014): 13683-13695.

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