  TTFClO4 salts were included in a PMMA matrix via solvent casting technique
under vacuum, up to 72 hours of pumping. The synthesis of the salt, present in
the literature was enriched with a further purification procedure, wich
resulted important to obtain TTF+. radical cation aggregates. The thin films
were characterized by low temperature UV-VIS-NIR absorption, and a
multicomponent broad charge transfer band (CT) in the near infrared was found.
Raman spectroscopy (RRS) in resonance with the CT transition allowed to study
the origin of the CT absorption: the species present in the films were
recognized as dimers and aggregates of TTF+. radical cation.
