singlet-triplet energy transfer

https://doi.org/10.1351/goldbook.S05701
Transfer of excitation from an electronically excited donor in a
singlet state
to produce an electronically excited acceptor in a
triplet state
.
See:
energy transfer (in photochemistry)
,
spin conservation rule
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2273 [Terms] [Paper]