Universität Bonn

Lu-Events-Kollektion

AC Kolloquium - Professor Dr. Kallol Ray
16.10.2024 von 14:00 bis 15:30

Small Molecule Activation at Transition Metal Centers: Structure-Function Correlations This talk will focus on some of the recent highlights from our group on homogenously catalyzed bioinspired activation of small molecules. It will cover many aspects of small molecule activation including: organometallic chemistry, spectroscopy, synthesis, and detailed mechanistic studies involving trapping of reactive intermediates. The demonstrated examples will help to emphasize the continuous effort of our group in uncovering the structure-reactivity relationships of biomimetic model complexes, which may allow vital insights into the prerequisites necessary for the design of efficient catalysts for the selective functionalization of unactivated C–H bonds, O2/H2O/H2O2 activations, or CO2 or H+ reductions by using cheap and readily available first-row transition metals under ambient conditions.

AC Kolloquium - Professor Dr. Jarl Ivar van der Vlugt
17.10.2024 von 14:00 bis 15:00

Cooperate, control and catalyze - creative chemistry with re(dox-)active ligands Metal-ligand and main group element-ligand cooperativity – how and why? Can we induce and exploit radical reactivity in noble metal complexes using redox-active ligands? How can we design iron complexes for highly selective C-H functionalization reactions under mild conditions? Which strategies allow the design of multinuclear complexes featuring redox-active ligands? Can we target and control metal-metal interactions, multi-electron storage and electronic communication? During the lecture, I will introduce some of our recent and ongoing approaches, involving ligand design, coordination chemistry principles, stoichiometric reactivity studies and catalytic screening, to address these questions. I look forward to discussing these developments with you!

BIGS Chemistry Lecture: Dr. Maximilian Menche
28.10.2024 von 13:15 bis 15:00

Dr. Maximilian Menche, BASF, Ludwigshafen Quantum Chemistry @ BASF and How Volunteering Got Me There Quantum chemistry has become a standard tool in chemistry research over the past decades due to the continuous development of methods, algorithms, computational resources and the general insights the methods can provide. The chemical industry has also contributed to this development and is continuously making use of this access to large-scale screening methodologies or detailed insights into reaction mechanisms. In the first part of this talk, I will present several examples of how quantum chemistry is applied to support and accelerate research efforts at BASF, showcasing its impact on innovation and discovery. The second part of the talk will switch gears to highlight volunteering in scientific societies, local communities and international networks, which remains an important pillar of these networks.

Sigrid Peyerimhoff-Preise und JCF-Kolloquium Prof. Müllen
29.10.2024 von 17:15 bis 18:30

Vorträge der Preisträger Anna Kny: Chemical bonding of Merocyanines on the Ag(100) surface - An investigation at the synchrotron light source Anne Müller-Feyen: Synthesis of Bidentate Ligands for Metallo-supramolecular Pd Cages Prof. Dr. Klaus Müllen, MPI für Polymerforschung Mainz: A Discovery Tour from Synthesis to Function Anschließend Snacks und Getränke mit dem JCF Bonn

GDCh-Kolloquium: Professor Dr. Karl Gademann, Universität Zürich
10.12.2024 von 17:00 bis 18:30

Professor Dr. Karl Gademann, Universität Zürich Microbiome Metabolites: Syntheses and Surprises The microbiome is composed of different microorganisms such as bacteria that live on or in a complex host, such as e.g. humans or plants. Estimates suggest that bacterial cells outnumber their human host cells by as much as 10:1, leading directly to the question: Who is in control? Interactions, and ultimately control of the microbiome with their host might involve the trading and trafficking of chemicals. We will present recent studies from our group investigating small molecule chemicals that serve as signals for bacterial communication, cyclitols for chemical offense, and a recent total synthesis of peyssonnoside A which might be produced by the microbiome of red algae, complemented with other terpene syntheses.

GDCh-Kolloquium: Prof. Dr. Erwin Reisner, University of Cambridge
28.01.2025 von 17:00 bis 18:30

Prof. Dr. Erwin Reisner, University of Cambridge, UK Sunlight-Powered Circular Chemistry Solar panels are well established to produce electricity as photovoltaic cells and are already in advanced development to photo-catalyse overall water splitting to produce green hydrogen as artificial leaves or photocatalyst sheets. This presentation will introduce solar chemistry panels as an emerging technology to enable sunlight-powered circular carbon chemistry. Our progress in designing and constructing prototype solar devices for the direct conversion of carbon dioxide as well as the coupling to the valorisation of biomass and plastic waste streams into renewable fuels and higher-value chemicals will be presented.

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