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Activation of SF6 at Rhodium and Platinum Complexes

Braun, Thomas, Prof. Dr. (Inorganic Chemistry)

Duration of Project: 03/2019 - 11/2022

The proposal deals with the activation of SF6 at rhodium and platinum compounds. Based on stoichiometric model reactions and mechanistic studies, the development of catalytic processes is envisaged. For the degradation or derivatization of SF6 at rho ...

CRC 1078/1: Structural Basis of Proton Release in Water Oxidation by Photosystem II (SP A05)

Zouni, Athina, (Experimental Biophysics)

Duration of Project: 01/2013 - 03/2021

In oxygenic photosynthesis, water is oxidized and dioxygen is formed at the Mn4Ca complex of photosystem II (PSII), a 750 kDa protein-cofactor complex embedded in the thylakoid membrane of plants and cyanobacteria. Reliable structural models of PSII ...

CRC 1109/1: Distorted Metal Oxides by Fluoride Doping and/or Mechanochemical Activation (SP C01)

Kemnitz, Erhard, Prof. Dr. sc. nat. (Inorganic and General Chemistry III)

Duration of Project: 04/2014 - 12/2017

Mittels fluorolytischer Sol-Gel- und mechanochemischer Synthese sollen kontrolliert strukturelle Störungen in Metalloxidphasen und deren Präkursoren eingebracht werden. Das beinhaltet sowohl die Synthese neuer kristalliner Modellverbindungen mit nied ...

CRC 1109/1: Oxo Frameworks in Molecular Compounds: Early Stage Modelling, Tailored Structural Motifs for Novel Materials and Water Reactivity (SP A04)

Limberg, Christian, Prof. Dr. (Inorganic and General Chemistry I)

Duration of Project: 04/2014 - 12/2017

This project will deal with well-defined molecular metal oxo compounds, which are synthesised/trapped to investigate their properties, their (water) reactivity and their dissolution/degradation behaviour. On the one hand we anticipate to thereby gath ...

CRC 1109/1: Siloxanes, Alumoxanes and Alumosiloxanes As Models for Surface Defects in Hydrolysis and Condensation Reactions (SP A01)

Braun, Thomas, Prof. Dr. (Inorganic Chemistry)

Duration of Project: 04/2014 - 12/2017

Subject of the project is to study hydrolysis and condensation processes at strained siloxane, alumoxane and alumosiloxane compounds. The latter can be considered to be model com-pounds for defect structures at silicate or aluminosilicate surfaces. T ...

CRC 1109/1: Understanding of Metal Oxide/Water Systems at the Molecular Scale. Structural Evolution, Interfaces, and Dissolutions

Limberg, Christian, Prof. Dr. (Inorganic and General Chemistry I)

Duration of Project: 04/2014 - 12/2017

The Collaborative Research Centre 1109 is an interdisciplinary research platform bringing together scientists from four universities and three non-university institutions. It comprises 18 research projects led by 23 principal investigators (PIs) with ...

CRC 1349/1: Controlling Fluorination Reactions by Hydrogen-Bridges in the Coordination Sphere of Au and Pt Complexes (SP A01)

Braun, Thomas, Prof. Dr. (Inorganic Chemistry)

Duration of Project: 01/2019 - 12/2022

In the subproject A1|Braun, hydrogen bonds in the coordination sphere of gold and platinum complexes will be used to develop hydrofluorination or difluorination reactions with HF sources or XeF2, respectively. The Fluorospecific Interactions will all ...

CRC 1349/1: Cooperating Lewis Pairs Based on Fluorinated Bismuth and Aluminium Acceptor Moieties (SP B01)

Limberg, Christian, Prof. Dr. (Inorganic and General Chemistry I)

Duration of Project: 01/2019 - 12/2022

Fluoride and fluorinated organic and inorganic residues will be utilized to create Lewis-acidic bis-muth and aluminium centres linked via organic spacer units (xanthene/dibenzofurane) to phos-phane or electron-rich transition metal moieties. These co ...

CRC 1349/1: Fluorinated Aluminum Compounds as Lewis-Acids for the Activation of Small Molecules (SP B04)

Braun, Thomas, Prof. Dr. (Inorganic Chemistry)

Duration of Project: 01/2019 - 12/2022

In the subproject B4|Braun/Riedel small molecules such as HSiEt3, HGeEt3 or H2, and FSiEt3, FGeEt3, HF or F2 will be activated at the nanoscopic aluminum chloro fluoride ACF (AlClxF3-x, x = 0,05-0,30) as well as at molecular aluminum pentafluoroortho ...

CRC 1349/1: Indigo Switch for the Quantification of Fluorine-Specific Interactions (SP C01)

Hecht, Stefan, Prof. (Organic Chemistry and Functional Materials)

Duration of Project: 01/2019 - 12/2022

In this project indigo derivatives with (partially) fluorinated residues will be synthesized and the equilibrium (ratio of E and Z isomers) as well as the thermal half-life of the photogenerated meta-stable Z isomer will be measured under various con ...

CRC 765/3: Spacer Structure (SP A03)

Hecht, Stefan, Prof. (Organic Chemistry and Functional Materials)

Duration of Project: 01/2008 - 12/2019

In this project functional host-guest systems will developed by exploiting multivalent and cooperative effects in combination with photoswitchable non-covalent interactions. Thus light will be used to externally control the supramolecular polymerizat ...

Design of Photoswitchable Organocatalysts, Their Immobilization, and Application to Chemical Surface Patterning

Hecht, Stefan, Prof. (Organic Chemistry and Functional Materials)

Duration of Project: 03/2007 - 06/2009

The combination of photochromism and molecular property changes promises an exquisite external control over chemical function with high temporal and spatial resolution. The development of photoswitchable catalysts, which possess two optically indepen ...

DFG Research Grant: Mixed Metal Oxide Clusters: Model Systems for Catalytically Active Materials

Sauer, Joachim, Prof. Dr. rer. nat. Dr. h.c. (Theoretical Chemistry / Quantum Chemistry)

Duration of Project: 01/2020 - 12/2022

We propose to combine state-of-the-art mass spectrometric and spectroscopic experiments with quantum chemical calculations to ultimately gain molecular-level insights into C-H bond activation, in general, and the mechanism of H-atom transfer operatin ...

DFG Research Grant: Molecular Metal Siloxides As Models for Functional Units of Oxidic Frameworks and Surfaces

Limberg, Christian, Prof. Dr. (Inorganic and General Chemistry I)

Duration of Project: 01/2021 - 12/2023

The target of this project is the synthesis and investigation of molecular compounds, which can mimic structural units occurring on the surfaces of oxides with high abundance and application relevance; concretely, aluminium oxides/hydroxides, iron ox ...

DFG-Temporary Position: Visible-Light-Responsive Molecular Materials

Hecht, Stefan, Prof. (Organic Chemistry and Functional Materials)

Duration of Project: 01/2017 - 12/2022

The central objective of this project is to use visible light as a fuel or control element to activate advanced functions and harness macroscopic responses in tailor designed molecular materials via the structural modification of incorporated optimiz ...

Elucidation of the photo-assembly mechanism of the light-driven water oxidizing complex in photosystem II

Zouni, Athina, PD Dr. (Honorary Chairs / Professors by Special Appointment / Part-Time Lecturers)

Duration of Project: 11/2017 - 12/2018

Oxygen photosynthesis in green plants, algae and cyanobacteria is catalyzed by the two large membrane protein complexes Photosystem I (PSI) and Photosystem II (PSII). Both complexes contain a reaction center (RC) that conducts a light-driven charge t ...

Elucidation of the self-repair mechanism of the light-driven water oxidation in photosystem II (PSII): Crystallization of the Mn-depleted PSII and its structural/functional analysis

Zouni, Athina, PD Dr. (Honorary Chairs / Professors by Special Appointment / Part-Time Lecturers)

Duration of Project: 11/2012 - 10/2017

Photosystem II (PSII) of oxygenic photosynthesis has the unique capability of utilizing visible light to oxidize water at the Mn4CaO5-cluster (the water oxidizing complex, WOC). Important progress in elucidating the molecular structure of the WOC has ...

Zouni, Athina, PD Dr. (Honorary Chairs / Professors by Special Appointment / Part-Time Lecturers)

Duration of Project: 01/2019 - 12/2022

Oxygen photosynthesis in green plants, algae and cyanobacteria is catalysed by two large membrane protein complexes Photosystem I (PSI) and Photosystem II (PSII). Both complexes contain a reaction centre (RC) that conducts a light-driven charge trans ...

EXC 314/1: Unifying Systems in Catalysis (UniSysCat)

SZF-1, Leitung Servicezentrum Forschung, (Research Service Centre)

Duration of Project: 01/2019 - 12/2025

The central scientific objective of UniSysCat (Unifying Systems in Catalysis) is to master the next stage of future challenges in catalysis: how to elucidate, create, and control reaction networks in chemical and biological catalysis at different lev ...

Mechanistic insight into molecular catalysts during electrocatalytic reduction of oxygen and carbon dioxide

Schwalbe, Matthias, (Inorganic and General Chemistry I)

Duration of Project: 01/2019 - 09/2022

The central aim of the project is the development of electrocatalysts for the reduction of oxygen and carbon dioxide and to study their structure function relationship under in-operando conditions via spectro-electrochemical methods. The catalytic sy ...

New oligonuclear metal catalysts for the light-driven activation of water and the reduction of CO2

Schwalbe, Matthias, Dr. (Inorganic and General Chemistry I)

Duration of Project: 06/2010 - 06/2014

The interaction of light and matter has an important role in the enlivened nature. Following the structural characteristics of active centres in biological systems new molecular compounds shall be synthesised that, with the aid of light activation, w ...

New oligonuclear metal catalysts for the light-driven activation of water and the reduction of CO2 (II)

Schwalbe, Matthias, (Inorganic and General Chemistry I)

Duration of Project: 08/2013 - 12/2017

First hetero-oligonuclear metal-organic compounds for the activation of water and carbon monoxide have been prepared. Their (photo)catalytic properties are currently investigated and reaction conditions are optimized. With the experiences gained new ...

Photoswitchable Organocatalysts

Hecht, Stefan, Prof. (Organic Chemistry and Functional Materials)

Duration of Project: 03/2009 - 08/2011

The combination of photochromism and molecular property changes promises an exquisite external control over chemical function with high temporal and spatial resolution. The development of photoswitchable catalysts, which possess two optically indepen ...

RG 2177/1: Inline Characterization of Reactions in Microfluidic Systems Using SERS (SP 03)

Kneipp, Janina, Prof. Dr. rer. nat. (Physical Chemistry)

Duration of Project: 10/2015 - 03/2020

The application of SERS in microfluidic structures enables the sensitive detection of reacting species. Therefore, it is, in principle, possible to monitor chemical reactions in situ. Apart from the identification and quantification of reactants, SER ...

SPP 2102: The Photocatalytic Reduction of CO2 with Heterodinuclear Catalysts Based on Earth Abundant Metals

Schwalbe, Matthias, (Inorganic and General Chemistry I)

Duration of Project: 01/2019 - 12/2022

Our goal is the development and in detail investigation of catalytic systems for the light-driven reduction of carbon dioxide. A major aim is to compare inter- and intramolecular systems that are based on the same combination of photosensitizer and c ...

Taking snapshots of photosynthetic water oxidation: simultaneous X-ray spectroscopy and crystallography

Zouni, Athina, Dr. (Experimental Biophysics)

Duration of Project: 11/2013 - 10/2016

The objective of this project is to study the overall protein structure and dynamics, as well as the chemical structure and dynamics of the oxygen-evolving complex (OEC) of the Photosystem II membrane bound protein, that catalyses the light-driven wa ...

Usage of Solar Energy for the Bioelectrocatalysis – Photobiohybrid Eletrodes for the Light-Driven Synthesis of Valuable Substances (II, SP B)

Zouni, Athina, PD Dr. (Honorary Chairs / Professors by Special Appointment / Part-Time Lecturers)

Duration of Project: 02/2018 - 01/2021

The aims of the Tandem-project are light-triggered electrodes for efficient energy conversion. In the frame of the prolonged period of work it is planned to increase the efficiency of photobio-electrodes and also to couple them with enzymatic convers ...

Using the Sunlight for Biocyatalysis – Development of Photo-Bioelectrode-Structures for Synthesis Isolation, Stabilization, Modification and Assembly of Photosystems and Its Components in Hybrid-Assemblies for Photo-Biocatalysis

Zouni, Athina, PD Dr. (Honorary Chairs / Professors by Special Appointment / Part-Time Lecturers)

Duration of Project: 08/2013 - 10/2017

The aim of the Tamdem-project is to develop light-activated electrode devices for biocatalytical purposes. Therefore photosystems or components should be combined with electrodes for an efficient photo-electron transfer. By coupling various enzyme sy ...