Positive magnetic field effect on mutual triplet–triplet annihilation of mixed molecular pairs: Magnetosensitive geterofusion induced by difference of g-factors

The model of magnetic field effect on mutual triplet exciton heteroannihilation under conditions of high field strength has been developed. The increase of the TT-annihilation rate induced by the difference of T-excitons g-factors is obtained in the limit of high magnetic field instead of the usual decrease caused by the intramolecular spin–spin coupling.