Rates of Intramolecular Singlet‐Singlet and Triplet‐Triplet Energy Transfer within One Molecule, an Anti‐Syn‐Bis‐Bimane

Abstract

The rate constants for intramolecular singlet‐singlet (anti → syn) and triplet‐triplet (also anti → syn) energy transfer in a bis‐bimane, a syn‐anti‐bis‐bimane, in which a dimethylene bridge connects the photophysically active moieties, have been estimated on the basis of radiative rate constants and quantum yields of fluorescence and phosphorescence of syn‐(1) and anti‐(2) bimanes and rate constants of intersystem crossing and photochemical reaction in an anti‐bimane.