Femtosecond real-time fragmentation dynamics of the nitrobenzene anion reveal the dissociative electron attachment mechanism.

ABSTRACT: The femtosecond real-time dynamics of the nitrobenzene anion (C₆H₅NO₂ ^-) in the excited state have been investigated using a recently developed time-resolved photofragment depletion (TRPD) spectroscopic technique, providing molecular-level insight into the C-N bond dissociation pathway leading to ˙C₆H₅ and NO₂ ^- fragments for the first time. Ultrafast electronic relaxation from the D₂ state, prepared at 2.48 eV, to the ground state (D₀) is followed by statistical unimolecular dissociation, yielding NO₂ ^- with a lifetime (τ) of approximately 294 ps. This behavior stands in stark contrast to the prompt bond rupture typically observed in conventional disso

SUBMITTER: An S 

PROVIDER: S-EPMC12278501 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature