Kekulé Institute of Organic Chemistry and Biochemistry

Current note

As of WS 2022/23, the courses will once again be held in person. However, hybrid or online events are also possible.

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© U. Weynand

Research topics

Biochemistry and natural products
Catalysis and sustainable chemistry
New methods in synthesis
Organo-electrochemistry
Organometallic compounds in synthesis
Organic materials
Polymer chemistry
Supramolecular chemistry and sensors

OC-News
Dr. Anup Kumar has been awarded an Alexander von Humboldt Foundation fellowship

We are delighted to announce that Dr. Anup Mandal has been awarded a highly prestigious Humboldt Research Fellowship by the Alexander von HumboldtFoundation to conduct an independent research project in the Bunescu Lab at the Kekulé Institute of Organic Chemistry and Biochemistry.

Dr. Mandal's project will focus on the first-row transition-metal-catalyzed dearomative difunctionalization of arenes to reach molecular complexity.

Plasmon mediated coherent population oscillations in molecular aggregates

The strong coherent coupling of quantum emitters to vacuum fluctuations of the light field offers opportunities for manipulating the optical and transport properties of nanomaterials, with potential applications ranging from ultrasensitive all-optical switching to creating polariton condensates.

Modular Bicyclophane-Based Molecular Platforms

Bicyclophane-based molecular platforms form extended 2D crystalline monolayers after adsorption from solution onto HOPG and contain orthogonal pillars that point towards the supernatant solution phase.

Nanoscale π-conjugated ladders

It is challenging to increase the rigidity of a macromolecule while maintaining solubility. Established strategies rely on templating by dendrons, or by encapsulation in macrocycles, and exploit supramolecular arrangements with limited robustness. Covalently bonded structures have entailed intramolecular coupling of units to resemble the structure of an alternating tread ladder with rungs composed of a covalent bond. We introduce a versatile concept of rigidification in which two rigid-rod polymer chains are repeatedly covalently associated along their contour by stiff molecular connectors. This approach yields almost perfect ladder structures with two well-defined π-conjugated rails and discretely spaced nanoscale rungs, easily visualized by scanning tunnelling microscopy. The enhancement of molecular rigidity is confirmed by the fluorescence depolarization dynamics and complemented by molecular-dynamics simulations. The covalent templating of the rods leads to self-rigidification that gives rise to intramolecular electronic coupling, enhancing excitonic coherence. The molecules are characterized by unprecedented excitonic mobility, giving rise to excitonic interactions on length scales exceeding 100 nm. Such interactions lead to deterministic single-photon emission from these giant rigid macromolecules, with potential implications for energy conversion in optoelectronic devices.

 

Events
GDCh-Kolloquium Professor Christiane Timmel
Chemische Institute - ...
04:00 PM - 05:00 PM
Quantum Travellers – the Role of the Radical Pair Mechanism in Avian Magnetoreception Here we report that the photochemistry of cryptochrome 4 from the ...
GDCh-Kolloquium Professor Dr. David Powers
Chemische Institute - ...
05:00 PM - 06:00 PM
Making, Seeing, and Using Subvalent Nitrogen Species Direct C H amination chemistry via electrophilic subvalent nitrogen intermediates could radically ...
GDCh-Kolloquium Professor Dr. Demyan Prokopchuk
Chemische Institute - ...
05:00 PM - 06:00 PM
Ligand Based C-H Bond Weakening for Synthesis and Electrocatalysis with Earth-Abundant Metals The selective, efficient, and sustainable activation of ...
KOPO 2024
Physikzentrum Bad Honnef
03:30 PM
KOPO 2024 CONJUGATED OLIGOMERS AND POLYMERS 12th Workshop May 26-29, 2024 Physikzentrum Bad Honnef

Working groups

                                                                                              

Jun. Prof. Dr. Bunescu
© A. Bunescu

Jun. Prof. Ala Bunescu

Transition Metal Catalysis
Organic Synthesis

Dickschat
© J. Dickschat

Prof. Dr. Jeroen Dickschat

Natural products chemistry
Biosynthesis, synthesis, structure elucidation

Engeser
© M. Engeser

PD Dr. Marianne Engeser

Mass spectrometry
Mechanism elucidation

AndreasGansäuerNeu
© Sophia Gansäuer

Prof. Dr. Andreas Gansäuer

Catalysis
Radical chemistry
Stereoselective synthesis

höger
© G. Hübl

Prof. Dr. Sigurd Höger

Organic chemistry
of complex systems

Lützen
© A. Lützen

Prof. Dr. Arne Lützen

Supramolecular chemistry
Organic synthesis
NMR spectroscopy

menche
© D. Menche

Prof. Dr. Dirk Menche                        

Natural products:
Characterization, total synthesis,
synthesis methods

Jester.png
© Jester

Dr. Stefan-Sven Jester

Junior Research Group
Supramolecular patterning of surfaces,
Scanning probe methods

von Krbek
© L. von Krbek

Dr. Larissa von Krbek

Junior Research Group
Fuel-driven supramolecular systems:
Synthesis, development and investigation

Chemistry minor

Courses for students of human medicine, dentistry and nutrition and food sciences

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© U. Weynand

Chemistry for physicians and dentists

Seminar, lecture and practical course

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© U. Weynand

Chemistry for nutrition and food scientists

Seminar, lecture and practical course

Departmental library

The Chemistry Department Library is a joint library of the Chemistry Department located in the building of the Kekulé Institute of Organic Chemistry and Biochemistry (EG). It consists of a collection of monographs, journals and series and is run as a reference library. A public photocopier is available in the library.

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