Back electron transfer

{
  "id": "MLC-T-CHM-001066",
  "term": "Back electron transfer",
  "field": "Chemistry",
  "definition": "The transfer of an electron from a reduced species to an oxidized species within a geminate radical ion pair or exciplex, leading to the regeneration of the ground state reactants. This process competes with charge separation and product formation in photochemical reactions. It often results in the dissipation of excitation energy as heat.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "electron transfer",
    "electronic state",
    "excited state",
    "oxidation"
  ],
  "references": [
    "PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2229 (https://doi.org/10.1351/pac199668122223)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/back-electron-transfer/"
}