EXCITED TRIPLET‐SINGLET INTERSYSTEM CROSSING IN ISOALLOXAZINES

Abstract

Abstract— Higher excited triplet states originating from the lowest triplet state of isoalloxazines by absorption of light with Λ ‐ 600 nm undergo “inverse” intersystem crossing to the singlet manifold [φ( T n ‐S m ) = 8 × 10 ‐3 ] followed by rapid internal conversion and “normal” fluorescence S 1 ‐S 0 with Λ m = 540 nm.