photochemical funnel
Molecular structure where the excited-state reactant or intermediate is delivered to the ground state to initiate product formation.
For a broad class of organic reactions, the structure of the funnel can take the form of a @CT07347@ or a @ST07477@.
PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 385 (