Zukünftige Termine
- 2024-04-30T17:00:00+02:00
- 2024-04-30T18:00:00+02:00
GDCh-Kolloquium Professor Dr. David Powers
Making, Seeing, and Using Subvalent Nitrogen Species Direct C H amination chemistry via electrophilic subvalent nitrogen intermediates could radically simplify access to nitrogen containing small molecules by providing the chemical tools to selectively convert ubiquitous C H bonds to valuable C N bonds At present, challenges in chemoselectivity sustainability, and synthetic versatility prevent realization of the synthetic potential of C H amination.This talk will describe recent efforts from the Powers Laboratory that advance 1 new strategies to structurally characterize transient intermediates in C H functionalization reactions, 2 novel metal free approaches to the sustainable generation of strong oxidants needed in C H functionalization reactions, and 3 bifunctional reagent platforms that enable rapid elaboration of the primary products of C H amination Future directions and challenges will be discussed.
- 2024-05-21T17:00:00+02:00
- 2024-05-21T18:00:00+02:00
GDCh-Kolloquium Professor Dr. Demyan Prokopchuk
Ligand Based C-H Bond Weakening for Synthesis and Electrocatalysis with Earth-Abundant Metals The selective, efficient, and sustainable activation of carbon-hydrogen bonds continues to be a critical area of research. Current synthetic methodologies heavily rely on transition metal catalysts to mediate the reactivity of C-H bonds for making medicines, fuels, agrochemicals, and materials. Broadly speaking, we are interested in leveraging C-H bonds housed within chelating ligand frameworks to understand the fundamentals of C-H activation and discover new (electro)catalytic transformations.
- 2024-05-26T15:30:00+02:00
- 2024-05-29T12:00:00+02:00
KOPO 2024
KOPO 2024 CONJUGATED OLIGOMERS AND POLYMERS 12th Workshop May 26-29, 2024 Physikzentrum Bad Honnef
- 2024-06-18T17:00:00+02:00
- 2024-06-18T19:00:00+02:00
GDCh-Kolloquium: Prof. Dr. Christoph Schalley, FU Berlin
Supramolecular Gels & Polymers: From Superhydrophobic and Slippery Surfaces to Directional Transport along Gradients In the first part, a very simple production procedure for superhydrophobic and slippery surfaces is reported. The deposition of a gel leads to the surface roughness needed for superhydrophobicity and in a way mimics the Lotus leaf effect. The second part of the talk discusses approaches to chemically and light-switchable mono- and multilayers of rotaxanes on gold surfaces. With alternating layer-by-layer deposition of the tetralactam macrocycles or the corresponding rotaxanes and various connecting metal ions, coordination oligomers with well-defined sequences can be built that are anchored on one end on the surface. The third part discusses how to use a supramolecular polymer self-assembling from easy-to-synthesize monomers as a supramolecular machine for the directional transport of particles as their cargo over millimeter distances.