Effect of solvents nature on the sorption properties of thin plates «Sorbfil», modified with nanoparticles thiacalix[4]arene/SiO2

Abstract

By the method of ascending thin-layer chromatography on thin-layer plates «Sorbfil» modified by thiacalix nanoparticles[4] aren/SiO2, the influence of the nature of organic solvents on the sorption properties of the obtained new material was evaluated. N-hexane, ethyl acetate, methylethylketone, toluene, characte- rized by various physical and chemical properties, were used as organic solvents.

The nanopowder thiacalix[4]arene/SiO2 were obtained using ultrasonic treatment. The solvent front movement was determined by the modified thin-layer plate in comparison with the standard sorbent «Sorb- fil». The retention time of the solvent was fixed every 10mm. The influence of the nature of organic solvents on the sorption properties of thin-layer plates modified by the studied nanoparticles was established. For po- lar solvents, characterized by sufficiently large dipoles of molecules, there is a significant increase in the re- tention time along the length of the sorption layer of the modified thin-layer plate.

Based on the method of Braun's assessed contribution to the intermolecular interaction with different polarity of solvents for thin-layer plates «Sorbfil», modified with nanoparticles, thiacalix[4]arene/SiO2 in comparison with unmodified and shows the displacement of the experimental points in different area of a triangular system.