Aqueous systems based on organophosphorous compounds in low concentrations: Interconnection of self-organization and biological properties

摘要

It has been shown for the first time that aqueous solutions of quaternary phosphonium salts (cetyltributylphosphonium bromide, cetyltriphenylphosphonium bromide) in the range of 1?×?10?2–1?×?10?18?mol/L are disperse systems. The nature of the disperse phase changes as the solution is diluted, starting from micelles (1?×?10?4–1?×?10?2?mol/L), translating into molecule-water domains (1?×?10?6–1?×?10?4?mol/L) and nanoassociates (1?×?10?18–1?×?10?6?mol/L). The effect that these compounds’ solutions have on the growth and development of hydrobionts (infusoria Paramecium caudatum and single-celled algae Chlorella vulgaris) in the low concentrations range has been studied for the first time. It was found that at a concentration less than 1?×?10?6?mol/L the nonmonotonic concentration dependences of the physicochemical properties and bioeffects of the systems are related to the formation and rearrangement of nanoassociates.