Luminescence quenching

{
  "id": "MLC-T-CHM-006808",
  "term": "Luminescence quenching",
  "field": "Chemistry",
  "definition": "The reduction in the intensity or lifetime of luminescence from a substance, caused by a non-radiative energy transfer process. This phenomenon occurs when an excited luminescent molecule interacts with another molecule, known as a quencher, leading to deactivation without photon emission. Quenching can be static, involving complex formation, or dynamic, involving collisional encounters.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "excitation energy",
    "quencher"
  ],
  "references": [
    "PAC, 1984, 56, 231. 'Nomenclature, symbols, units and their usage in spectrochemical analysis-Part VI: molecular luminescence spectroscopy' on page 235 (https://doi.org/10.1351/pac198456020231)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/luminescence-quenching/"
}