Abstract
The kinetics of triplet state decay and concomitant delayed fluorescence of tetraphenylporphyrin
(TPP) incorporated into the multilayers of n-decanol adsorbed on the external surface of zeolites at different
temperatures were studied by the laser flash photolysis via monitoring the emission and diffuse-reflectance.
In deoxygenated samples, the kinetics of diffusion-controlled bimolecular triplet-triplet annihilation (TTA)
has been used to probe the multilayers. A very large local concentration of reactants may be obtained using
small bulk amounts. A fast TTA rate constant demonstrated the triplet energy migration in TPP assemblies
formed at the liquid/solid interface. The TTA in aerated samples is mediated by molecular oxygen leading
to