Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

We report the results of investigation aqueous solutions perfluorinated metal phthalocyanines FxPcZn (x = 16, 64) and their adsorption at solid–liquid interfaces. Specifically, we focused on development environmentally benign methods for preparation coatings fluorinated photosensitizers that are capable generating singlet oxygen degrading organic contaminants in water. Counterintuitively, F16PcZn F64PcZn demonstrated good solubility (∼10–4 M) water/ethanol mixtures containing up to 95–98% water by volume. The amphiphilic properties macrocycles were attributed presence a highly polar porphyrin center surrounded nonpolar peripheral groups (F CF3). A thermodynamic model interfacial interactions upon solvation was proposed, rationalizing water–ethanol. As assessed UV–vis fluorescence, solution F16 contained aggregates; however, size aggregates small not detectable DLS. from water–ethanol occurred readily various substrates, including PET plastic, polyester nylon textiles, mica, silica gel, talc. According XPS, solid-state UV–vis, contact angles, produced hydrophobic, ∼monomolecular phthalocyanines. compared solutions, fraction monomeric significantly increased adsorbed state. shift self-association equilibrium toward monomers particularly notable talc, where both even after with high content. photodynamic activity tested reactions degradation methyl orange dye under radiation visible light. Both talc active, stable, reproducible

Language: Английский