Cordula Ruppenstein

ORCID: 0009-0000-0490-0725
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Research Areas
  • Fullerene Chemistry and Applications
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Graphene research and applications
  • Carbon Nanotubes in Composites
  • Supramolecular Self-Assembly in Materials
  • Synthesis and Properties of Aromatic Compounds
  • Porphyrin and Phthalocyanine Chemistry
  • Surface Chemistry and Catalysis
  • Asymmetric Synthesis and Catalysis
  • Boron and Carbon Nanomaterials Research
  • Molecular Junctions and Nanostructures
  • Chemical Synthesis and Analysis
  • Chemical Synthesis and Reactions
  • Supramolecular Chemistry and Complexes

Martin Luther University Halle-Wittenberg
2022-2025

The curvature of an aromatic system is essential parameter that can be used to program the self-assembly and host-guest complementarity in geodesic polyarenes. However, challenging synthesis curved aromatics impedes exploration related effects on binding properties. design a polyarene with programmed fitting C60 by stepwise introduction five-membered rings are presented solve this challenge. Among several methods explored, route utilizing cyclodehydrofluorination proved most successful,...

10.1021/jacsau.5c00049 article EN cc-by-nc-nd JACS Au 2025-03-13

Abstract A novel buckybowl catcher with an extended π‐surface has been synthesized via cross‐coupling of two bowl shaped bromoindacenopicene moieties a tolyl linker. The obtained unambiguously characterized by 2D‐NMR and mass spectrometry. DFT calculations indicate that the curved shape receptor is favourable for binding fullerenes. Effective was confirmed interactions C 60 70 utilizing NMR spectroscopy isothermal titration calorimetry (ITC). resulting values show higher affinity towards...

10.1002/chem.202302778 article EN cc-by Chemistry - A European Journal 2023-10-06

We have discovered a dual (i. e., soft and hard) Lewis acidity of alumina that enables rapid one-pot π-extension through the activation terminal alkynes followed by C-F activation. The tandem reaction introduces an acenaphthene fragment - essential moiety geodesic polyarenes. This provides quick access to elusive non-alternant polyarenes such as π-extended buckybowls helicenes three-point annulation 1-(2-ethynyl-6-fluorophenyl)naphthalene moiety. versatility developed method was demonstrated...

10.1002/chem.202200584 article EN cc-by-nc-nd Chemistry - A European Journal 2022-03-21

Abstract Invited for the cover of this issue are groups Alexander S. Oshchepkov, Konstantin Y. Amsharov, and M. Eugenia Pérez‐Ojeda at Max Planck Institute Science Light, Martin‐Luther‐University Halle‐Wittenberg Friedrich‐Alexander‐Universität Erlangen‐Nürnberg, respectively. The image depicts a buckybowl catcher carefully framing C 70 fullerene which is associated with miraculous, marvellous Fabergé artworks. Read full text article 10.1002/chem.202302778 .

10.1002/chem.202303814 article EN Chemistry - A European Journal 2023-11-29

Tandem bond activation: The dual Lewis acidity of alumina has been discovered and employed to activate C−F triple C≡C bonds in a tandem manner provide rapid access elusive nonplanar PAHs such as π-extended helicenes, buckybowls fragments geodesic nanoribbons. More information can be found the Research Article by K. Amsharov co-workers (DOI: 10.1002/chem.202200584).

10.1002/chem.202201304 article EN Chemistry - A European Journal 2022-05-02
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