Delayed luminescence

Term · Chemistry · MLC-T-CHM-002966

Luminescence that decays more slowly than the lifetime of the emitting state alone would predict, because that state is repopulated over time. Mechanisms include triplet-triplet annihilation, thermally activated return from a triplet to the emitting singlet, and charge recombination. Ordinary phosphorescence is not included, since its decay simply follows the long lifetime of the emitting triplet state.

Table 1. Record
Identifier	MLC-T-CHM-002966
Field	Chemistry
Subject	Organic and Biomolecular Chemistry
References	PAC, 1988, 60, 1055. 'Glossary of terms used in photochemistry (Recommendations 1988)' on page 1065 (https://doi.org/10.1351/pac198860071055)
See also	Luminescence; Cation; Delayed fluorescence; Ground state; Intersystem crossing; Singlet state

Record as JSON

{
  "id": "MLC-T-CHM-002966",
  "term": "Delayed luminescence",
  "field": "Chemistry",
  "definition": "Luminescence that decays more slowly than the lifetime of the emitting state alone would predict, because that state is repopulated over time. Mechanisms include triplet-triplet annihilation, thermally activated return from a triplet to the emitting singlet, and charge recombination. Ordinary phosphorescence is not included, since its decay simply follows the long lifetime of the emitting triplet state.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "luminescence",
    "cation",
    "delayed fluorescence",
    "ground state",
    "intersystem crossing",
    "singlet state"
  ],
  "references": [
    "PAC, 1988, 60, 1055. 'Glossary of terms used in photochemistry (Recommendations 1988)' on page 1065 (https://doi.org/10.1351/pac198860071055)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/delayed-luminescence/"
}

Record 3,155 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.