THE PHOTOPHYSICS OF SOME INTRAMOLECULAR TERNARY COMPLEXES FORMED BETWEEN ARYL AND AMINO GROUPS

Article abstract of DOI:10.1016/S0040-4020(01)91406-1

The fluorescence properties of (3)-(6) in solvents of varying polarity have been examined and the conclusion reached that in non-polar solvents they exhibit fluorescence (low quantum yield) from an intramolecular ternary complex.In polar solvents very little fluorescence is observable.Although each compound exhibits extensive intramolecular fluorescence quenching, the quantum yield of localised triplet naphthalene in non-polar solvents remains relatively high indicating that intersystem crossing occurs in the non-relaxed exciplex.