dual fluorescence

of systems or molecular species
Systems or molecular species showing two @F02453@ bands. Several non-trivial molecular properties may be at the basis of a dual @F02453@, such as conformational equilibrium in the @G02704@ and a mixture of @E02257@.
Trivial reason for dual @F02453@ is the coexistence of two independent @FT07380@.
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 327 [Terms] [Paper]