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Showing 1–6 of 6 results
Advanced filters: Author: Tomáš Neuman Clear advanced filters

  • Excited states of molecular radicals are often composed of multiple electronic configurations. Here, the authors use light-assisted scanning tunneling microscopy to visualize these configurations through tuning of the applied voltage.

    • Rodrigo Cezar de Campos Ferreira
    • Amandeep Sagwal
    • Martin Švec
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • Scanning tunneling microscopy (STM) gives access to the atomic-scale properties of matter. Here, the authors showcase the fluorescent functionalization of an STM tip using a single molecule in direct metal contact, permitting the local electrostatic and -dynamic environment to be probed.

    • Niklas Friedrich
    • Anna Rosławska
    • Guillaume Schull
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8

  • Weak laser light confined at the apex of a scanning tunnelling microscope tip can drive the tautomerization of a free-base phthalocyanine with atomic-scale precision. The combination of tip-enhanced photoluminescence spectroscopy and hyperspectral mapping paired with theoretical modelling then unravel an excited-state mediated reaction.

    • Anna Rosławska
    • Katharina Kaiser
    • Guillaume Schull
    Research
    Nature Nanotechnology
    Volume: 19, P: 738-743

  • Tautomerization, the interconversion between two constitutional isomers of a molecule, plays a major role in chemistry. The combination of hyper-resolved fluorescence microscopy with time-correlated measurements and spectral selection enables the identification and in-depth characterization of a tautomerization reaction within a single molecular switch.

    • Benjamin Doppagne
    • Tomáš Neuman
    • Guillaume Schull
    Research
    Nature Nanotechnology
    Volume: 15, P: 207-211

  • The internal Stark effect, a shift of the spectral lines of a chromophore induced by electrostatic fields in its close environment, plays an important role in nature. Here the authors observe a Stark shift in the fluorescence spectrum of a phthalocyanine molecule upon charge modifications within the molecule itself, achieved by sequential removal of the central protons with a STM tip.

    • Kirill Vasilev
    • Benjamin Doppagne
    • Guillaume Schull
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8