Electron Energy Loss Processes in Methyl Methacrylate: Excitation and Bond Breaking.

ABSTRACT: Details of electron-induced chemistry of methyl methacrylate (MMA) upon complexation are revealed by combining gas-phase 2D electron energy loss spectroscopy with electron attachment spectroscopy of isolated MMA and its clusters. We show that even though isolated MMA does not form stable parent anions, it efficiently thermalizes the incident electrons via intramolecular vibrational redistribution, leading to autodetachment of slow electrons. This autodetachment channel is reduced in clusters due to intermolecular energy transfer and stabilization of parent molecular anions. Bond breaking via dissociative electron attachment leads to an extensive range of anion products. The dominant OCH₃^- channel is accessible via core-excited resonances with threshold above 5 eV, des

SUBMITTER: Luxford TFM 

PROVIDER: S-EPMC10068740 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature