Modification of silica nanoparticles with stereisomers of <Emphasis Type="Italic">p</Emphasis>-<Emphasis Type="Italic">tert</Emphasis>-butylthiacalix[4]arene containing four 2-oxo-2-{[3-(triethoxysilyl)prop-1-yl]amino}ethoxy substituents at the lower rim |
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Authors: | R V Ziatdinova N A Losev I S Teren’tev A V Gerasimov L S Yakimova V G Evtyugin I I Stoikov |
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Institution: | 1.Butlerov Institute of Chemistry,Kazan (Volga region) Federal University,Kazan, Tatarstan,Russia |
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Abstract: | Three stereoisomers (cone, partial cone, and 1,3-alternate) of p-tert-butylthiacalix4]arene bearing four anchor propyltriethoxysilane substituents at the lower rim were synthesized for the first time. Surface modification of silica nanoparticles (d = 12 nm) with the synthesized macrocycles gave novel hybride thiacalix 4]arene?SiO2 particles. The obtained nanostructured adsorbents were found to efficiently extract nitroaromatic compounds from aqueous solutions. The partial cone and 1,3-alternate thiacalix4]arene–SiO2 hybrid particles showed affinity to nitrophenols. |
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