SPP 2102:  Light Controlled Reactivity of Metal Complexes

• Subject Area: Chemistry
• Term: from 2018 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 359737763

The design of the potential energy landscape of electronically excited states in discrete metal complexes is of utmost importance for unveiling and exploiting the photophysics and photochemistry of this class of compounds. The Priority Programme aims at the development of rational design concepts for new functional photoactive metal complexes. At the core of the programme is the fundamental understanding of photoinduced metal-centred processes and the dynamics of electronically excited states of metal complexes, including:• development of molecular emitters and sensitizers based on abundant metals to replace rare and precious metal centres,• understanding and design of electronically excited states of metal complexes for potential applications in diagnostics, imaging, therapy, and molecule-based sensors,• development of conceptually new reactivity patterns of electronically excited metal complexes,• providing access to new substance classes based on highly reducing or oxidizing electronically excited metal complexes,• development of photoinduced multielectron and multiproton processes and• understanding of dynamic environmental effects on the excited state properties of metal complexes in soft matrices.The programme benefits from complementary new developments in the field of ultrafast spectroscopy (IR to X-ray energies) and from new theoretical developments.The programme comprises the following four subsections:• Novel Metal-based Luminophores,• Novel (Earth-abundant) Metal-based Photosensitizers,• Fundamental Aspects of Energy Transfer, Multielectron and Multiproton Processes in Metal-based Systems and• Photoinduced Bond Activation in Transition Metal Complexes.The project consortia comprise research activities covering at least two of the three following topics:• synthesis and ground-state characterisation of new photoactive metal complexes,• spectroscopic investigations of excited state properties, especially using time-resolved methods(fs – ms, IR – X-ray) and• theoretical investigations on excited state properties.The coordination project supports the integration, communication, and information exchange of scientists working in the program.The program PP 2102 will continue to use different tools to facilitate cooperation and training of PhD students: Progress report meetings with all teams in the PP and topical workshops with national and international experts for better integration in international networks.

• DFG Programme: Priority Programmes
• International Connection: Austria, Switzerland

Projects

• Achieving NIR circularly polarized luminescence (CPL) by triad change of d10 systems (Applicants Marian, Christel M. ;  Steffen, Andreas )
• Coordination Chemical Scaffolds for Dual Proton Coupled Photoelectron Transfer (Applicant Seidel, Wolfram W. )
• Coordination Funds (Applicant Heinze, Katja )
• Coordination Funds (Applicant Heinze, Katja )
• Dual-mode ligand release from transition metal complexes: Towards photoselectivity by complementary synthetic and ultrafast UV-VIS-MIR spectroscopic approaches (Applicants Nürnberger, Patrick ;  Schatzschneider, Ulrich )
• Elementary Steps in Gold Photocatalysis (Applicants Dreuw, Andreas ;  Hashmi, A. Stephen K. )
• ESKIMO-Pro-IRON - Excited State Kinetic Modelling and Properties Tuning of Iron Complexes (Applicants Bauer, Matthias ;  Heinze, Katja ;  Kühn, Oliver ;  Lochbrunner, Stefan )
• Excited-State Properties of Multiply-Excited Oligonuclear Coordination Compounds (Applicants Dietzek-Ivansic, Benjamin ;  Schubert, Ulrich S. )
• Exploiting the disulfide/dithiol switch in photoinduced proton coupled electron transfer reactions (Applicants Meyer, Franc ;  Schwarzer, Dirk )
• Exploration of Zn(II) complexes for efficient phosphorescence and TADF (Applicants Marian, Christel M. ;  Steffen, Andreas )
• EXTRA-SHARC2 (Excited State Dynamics of Transition Metal Complexes using SHARC) (Applicant González, Leticia )
• Heteroleptic bis-tridentate Fe(II)-NHC complexes as photobases (Applicants Dietzek-Ivansic, Benjamin ;  Schubert, Ulrich S. )
• Long-lived MLCT excited states of Manganese (I) complexes in supercritical CO2 and other matrices (Applicants Pannwitz, Andrea ;  Rau, Sven )
• Mono- and Bimetallic Cyclometalated Transition Metal NHC Complexes (Applicant Straßner, Thomas )
• Multiphoton Processes and Directional Charge-Transfer in Ferrocene-Polyoxometalate Dyads and Triads (Applicants Streb, Carsten ;  Zedler, Linda )
• Near-Infrared Spin-Flip Luminophores with Earth-abundant Metal Ions 2.0 (NIR-SPINFLIP 2.0) (Applicants Heinze, Katja ;  Niedner-Schatteburg, Gereon ;  Seitz, Michael )
• Paradigm Shift in Triplet-Triplet Energy Transfer Catalysis: Towards Earth Abundant Transition Metals and Low Photon Energies (Applicants Glorius, Frank ;  Guldi, Dirk M. )
• Pushing the ligand field to the limit – Cyclometalated complexes of d8-configured metal ions as efficient triplet emitters (Applicants Doltsinis, Nikos L. ;  Klein, Axel ;  Strassert, Cristian Alejandro )
• Tailoring of heteroleptic copper based photosensitizers and their photophysical characterization (Applicants Karnahl, Michael ;  Tschierlei, Stefanie )
• The photocatalytic reduction of CO2 with heterodinuclear catalysts based on earth abundant metals (Applicant Schwalbe, Matthias )
• Theoretical and experimental correlations between solution phase and gas phase photoredox-reactivity of molecular vanadium oxide clusters (Applicants Jacob, Timo ;  Riehn, Christoph ;  Streb, Carsten )
• Ultrafast monitoring and synthetic control of electronic properties of a self-assembled coordination system as a multi-site luminescent probe for sensoric and imaging applications (Applicants Abel, Bernd ;  Kersting, Berthold )
• Understanding the Light-driven Generation of Metallonitrenes for Unsensitized Nitrogen Atom Transfer Photocatalysis (Applicants Krewald, Vera ;  Sarkar, Biprajit ;  Schneider, Sven ;  Vöhringer, Peter )

• Spokesperson: Professorin Dr. Katja Heinze