Thin films with immobilized bis-crown-ether dye

Thin films based on photosensitive bis-crown-ether dye were prepared by Langmuir and “modified spreading” techniques. The maximal changes in the surface pressure – and surface potential–molecular area isotherms (the relative molecular area increase was about 16%), in the absorption (shifts of λmax up to 9 nm) and fluorescence (shifts of λmax up to 17 nm) spectra of these films in the presence of diaminoalkane dihydrochlorides in the aqueous subphase were found.