Exciplex-type emissions in mixed aggregates of polycyclic aromatic hydrocarbons at low temperature

Preparation and photo-physical characterisation of nanocomposites obtained by intercalation and co-intercalation of organic chromophores into hydrotalcite-like compounds

“…The latter band is broad and unstructured, and might indicate the formation of anthracene aggregates favoured by the confinement of the aromatics within the restricted space of the host interlayer region. The red-shifted absorption and emission spectra in Shpolskii solutions, 24 in vitreous solutions of nonpolar aliphatic hydrocarbons 25 and in zeolites 26 were explained by the formation of anthracene aggregates. It should be noted that the interlayer region has a specific role in inducing the formation of aggregates, since, for pure solid anthracene, no spectral evidence of aggregation could be observed.…”