News Archive 2024 (and before)

Photoinduced Asymmetric Charge Trapping Stabilizes a Charge-Separated State

Nitrogen-Doped Porous Nanoribbons

A Golden Nano-Checkerboard

Heteroatom Effect on Quantum Interference in Molecular Junctions

Searching the Hearts of Graphene-like Molecules for Simplicity, Sensitivity, and Logic

Periodic Charging of Individual Molecules Coupled to the Motion of an AFM Tip

Exploitation of Desilylation Chemistry

A new hexadecanuclear nanocluster with a mixed-valence {Co₁₆} core has been prepared and fully characterized. Predominantly intracluster ferromagnetic exchange interactions were measured.

Hydrogen-bonded assemblies of N-doped heterocyclic triimidazole molecules on a Ag(111) substrate were investigated using scanning tunneling microscopy (STM) and low-energy electron diffraction (LEED) techniques. The LEED data are consistent with simulations based on a distinct overlayer on the Ag(111) lattice. Density functional theory (DFT) calculations support the experimental results.

We report the on-surface reaction on Ag(111) for the synthesis of two-dimensional N-doped graphene sheets possessing a honeycomb Kagome lattice. STM, AFM and DFT methods are applied to scrutinize the structural and electronic properties. We demonstrate the semiconducting character of the lattice and the emergence of Kagome flat bands near the Fermi level.

Nitrogen-doped porous graphene nanoribbons (N-GNRs) were synthesized on Ag(111). A combination of scanning tunneling microscopy, atomic force microscopy, scanning tunneling spectroscopy and density functional theory has been applied for the characterization of the nanoribbon.

The covalent fusion of a graphene nanoribbon with porphyrins through on-surface synthetic protocol is reported. The atomically precise structure has been characterized by STM and nc-AFM. The electronic properties have been investigated by STS in combination with DFT calculations, which reveals a low electronic gap of 0.4 eV.

Thanks to the support of the Bernese entrepreneur Walter Inäbnit, the University of Bern is able to establish a new endowed lectureship. It is based at the newly opened W. Inäbnit Laboratory for Molecular Quantum Materials at the Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP). The purpose of this new lectureship is to develop new classes of materials which could potentially solve the problem of energy loss in electronics. The lectureship will be held by PD Dr. Shi-Xia Liu.

Die Videoreihe der UniBE Foundation beleuchtet in einem kurzen Videoformat Forscher:innen und ihre Visionen.
https://unibefoundation.ch/videos/science-speed-dating-mit-shia-xia-liu

Der UniBE Foundation Blog berichtet über innovativen Projekten und die Arbeit von Forscher:innen an der Universität Bern