Davydov splitting

{
  "id": "MLC-T-CHM-002873",
  "term": "Davydov splitting",
  "field": "Chemistry",
  "definition": "The splitting of an absorption or emission band into multiple components in the solid state, observed when identical chromophores are present in a crystal unit cell. This phenomenon arises from the exciton coupling between translationally inequivalent molecules within the unit cell. The magnitude of the splitting depends on the strength of the intermolecular interactions and the orientation of the transition dipoles.",
  "synonyms": [
    "factor-group splitting"
  ],
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "unit cell"
  ],
  "references": [
    "PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2235 (https://doi.org/10.1351/pac199668122223)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/davydov-splitting/"
}