Controlled single-electron transfer enables time-resolved excited-state spectroscopy of individual molecules.

ABSTRACT: An increasing number of scanning-probe-based spectroscopic techniques provides access to diverse electronic properties of single molecules. Typically, these experiments can only study a subset of all electronic transitions, which obscures the unambiguous assignment of measured quantities to specific quantum transitions. Here we develop a single-molecule spectroscopy that enables the access to many quantum transitions of different types, including radiative, non-radiative and redox, that is, charge-related, transitions. Our method relies on controlled alternating single-charge attachment and detachment. For read-out, the spin states are mapped to charge states, which we can detect by atomic force microscopy. We can determine the relative energies of ground and excited states of an individua

SUBMITTER: Sellies L 

PROVIDER: S-EPMC11750717 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature