“…In UV-Vis spectra of PPX films on a background of the PPX absorption, it is possible to observe only absorption bands of Ag n with n > 15, which, according to reference 9, should be in an "open" range of PPX spectrum at l > 320 nm. Because in this spectral range there are no absorption bands except for the absorption band of Ag nanocrystals, it may be concluded that clusters stabilized in obtained films contain less than 15 atoms [24,44].…”