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Clar’s goblet is a polycyclic aromatic hydrocarbon with an unconventional source of magnetism. This bow tie shaped nanographene, which was predicted by Erich Clar in the 1970s, possesses an even number of carbon atoms and π-electrons, but the connectivity of the carbon atoms prohibits pairing of all electrons into π-bonds. The resulting diradical character makes the molecule very reactive and, thus, unstable under standard conditions. Mishra, Beyer and colleagues have now synthesized Clar’s goblet on a gold surface under ultra-high vacuum conditions. By means of low-temperature scanning tunnelling microscopy and spectroscopy, they have unveiled the structure of the molecule and its antiferromagnetic ground state, and controllably manipulated the radical character. The cover art is based on a scanning probe image revealing the carbon–carbon bond structure of Clar’s goblet and shows an artificial ensemble of nine molecules.
Results from new artificial water channels for desalination show the importance of exploring alternative solutions to simply optimizing existing technologies.
Chris Toumey explores the way in which reactions to nanotechnology from different religious denominations can be translated to other emerging technologies.
Tellurium thin films evaporated at cryogenic temperatures facilitate the realization of high performance wafer-scale flexible p-type field-effect transistors and various types of logic gates.
Nuclear spins are excellent qubits, but long-range interactions are difficult to establish. Here, the authors couple a 29Si nuclear spin to electrons in a lithographically defined quantum dot and show initialization, readout and entanglement with the electron spin. The 29Si retains its coherence under electron transfer between quantum dots.
Spin-crossover complexes often lose their functionality upon adsorption on metal surfaces. Here, a metal–organic complex adsorbed on a silver surface undergoes reversible interlocked spin and coordination switching, which is enabled by an intramolecular feedback mechanism controlling the position of an axial ligand strapped to the complex.
Topological frustration in the π-electron network of the polycyclic aromatic hydrocarbon C38H18 yields unpaired electrons and a magnetically non-trivial ground state. Here, the authors synthesize this molecule, known as Clar’s goblet, on Au(111) and characterize the antiferromagnetic ground state with scanning tunnelling microscopy.
Synthesis of MoS2 on a silicon surface pre-treated with phosphine enables the growth of one-dimensional MoS2 nanocrystals with tunable dimensions and optical properties.
Adoptive transfer of macrophages, transfected with vitamin C lipid nanoparticles that deliver an antimicrobial peptide and cathepsin B mRNA, can be applied for the treatment of multidrug-resistant bacteria-induced sepsis in mice.
Synchronization of oscillators can be used to carry out cognitive tasks. Large two-dimensional arrays of synchronized spin Hall nano-oscillators have now been demonstrated, and may in future enable neuromorphic computing on the nanoscale.
Tellurium thin films thermally evaporated at cryogenic temperatures enable the fabrication of high-performance wafer-scale p-type field-effect transistors and three-dimensional circuits.
The fluorination of graphene sheets in bilayer graphene grown by chemical vapour deposition on a single-crystal CuNi(111) surface results in a fluorinated diamond monolayer.