## singlet-triplet absorption

https://doi.org/10.1351/goldbook.S05700
@A00036@ which takes place with the transition from the singlet @G02704@ of the molecule to triplet states ($$\text{S}_{0}$$ → $$\text{T}_{\text{n}}$$) and results in the singlet-triplet @A00043@.
Source:
PAC, 1984, 56, 231. (Nomenclature, symbols, units and their usage in spectrochemical analysis-Part VI: molecular luminescence spectroscopy) on page 234 [Terms] [Paper]