Determination of efficiencies of complex-formation and light-emitting steps in mercury-photosensitized luminescence

The Hg(6 P-3(1))-photosensitized luminescence of amine (AM)-alcohol (AL) mi xtures was investigated under conditions of steady illumination at room tem perature. The quantum efficiencies of the luminescence from the HgAM* compl ex for AM-AL mixtures were found to be much larger than those for pure amin es. This finding was explained by the efficient formation of HgAM* complexe s through the ligand-exchange reaction, HgAL* + AM --> HgAM* + AL, in a pre vious paper; From the quantum efficiencies of luminescence for amines, alco hols and AM-AL mixtures, the efficiencies of complex-formation and light-em itting steps could be determined separately. The rate constants for radiati ve and non-radiative processes from the exciplexes were determined for the first time.