Lanthanide complexes of phthalocyanines for identification of nanosized silica in water
The properties of lanthanide complexes of phthalocyanine LnPc<sub>2</sub> (Ln = Ho, Er, Yb, Lu) in chloroform, dimethylformamide, polymers matrices, and aqueous solutions of nanoscale silica particles have been determined by electron spectroscopy. Oxidation-reduction processes were detected which are determined by the concentration of nanoparticles. As a result, prototypes of sensory systems for the determination of nano-sized silica in solutions have been proposed. Films of polyvinylpyrrolidone and polyvinyl alcohol containing LuPc<sub>2</sub> and YbPc<sub>2</sub> were obtained, and a sensory response to nano-sized silica was also established. In general, the results show the promise of developing sensor devices based on the systems studied.