dark photochemistry (photochemistry without light) [obsolete]

https://doi.org/10.1351/goldbook.D01517
@C01033@ involving electronically excited molecular entities which are generated thermally rather than by @A00036@ of electromagnetic radiation. The use of this term is discouraged.
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2235 [Terms] [Paper]