Enhanced phosphorescence analysis

{
  "id": "MLC-T-CHM-013072",
  "term": "Enhanced phosphorescence analysis",
  "field": "Chemistry",
  "definition": "A technique for increasing the phosphorescence quantum yield of an analyte by adding a second substance to the sample matrix. This enhancement occurs through mechanisms such as heavy-atom effects, which increase spin-orbit coupling and facilitate the transition to the triplet state, or by providing a rigid matrix that reduces non-radiative decay. For example, adding heavy-atom salts like sodium iodide to an aqueous solution can significantly increase the phosphorescence signal from certain organic molecules.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "excited state",
    "luminescence quenching"
  ],
  "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/enhanced-phosphorescence-analysis/"
}