Journal of the Iranian Chemical Society

, Volume 15, Issue 10, pp 2325–2338 | Cite as

Synthesis, characterization, and metal uptake of multiple functionalized immobilized-polysiloxane diamine-thiol chelating ligand derivatives

  • Nizam M. El-Ashgar
  • Issa M. El-Nahhal
  • Mona A. Ahmed
  • Asmah A. Abu Shaweesh
  • Mohamed M. Chehimi
Original Paper


Immobilized-polysiloxane (diamine-thiol) tetraethylacetate, P-(NN-S)-TEA (where P represents [Si–O]n polysiloxane network), was synthesized using one-pot reaction of tetraethylorthosilicate (TEOS) with 3-(ethylenediaminetriethylacetate)propyltrimethoxysilane and 3-thiolethylacetatepropyltrimethoxysilane in the presence of cetyl trimethylammonium bromide (CTAB) as a surfactant. Its ethylenediamine and diethylenetriamine modified polysiloxane (diamine-thiol)-tetrakis(N-2-aminoethylacetamide), P-(NN-S)-TEA-NN, and polysiloxane (diamine-thiol)-tetrakis(N-diethylenediamineacetamide), P-(NN-S)-TEA-NNN chelating ligand systems were also obtained. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopic (XPS), and thermogravimetric analysis (TGA) techniques have been used for establishing their structures. An elemental CHNX combustion analyzer was used to determine the mass fractions of carbon, hydrogen, nitrogen, and sulfur of samples. The metal uptake capacities results showed that the modified polysiloxane ligand systems exhibited high capacities for the uptake of divalent metal ions in the following order: Cu2+> Pb2+> Ni2+> Co2+.


Metal uptake Silica-based solid supports Immobilized polysiloxanes Sol–gel Template synthesis Multiple functionalized polysiloxanes 



The authors would like to thank the French Government for the Al-Maqdisi grant jointly with the Palestinian Ministry of Higher Education.


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Copyright information

© Iranian Chemical Society 2018

Authors and Affiliations

  • Nizam M. El-Ashgar
    • 1
  • Issa M. El-Nahhal
    • 2
  • Mona A. Ahmed
    • 3
  • Asmah A. Abu Shaweesh
    • 3
  • Mohamed M. Chehimi
    • 4
  1. 1.Department of ChemistryThe Islamic University—GazaGazaPalestine
  2. 2.Department of ChemistryAl-Azhar University—GazaGazaPalestine
  3. 3.Department of Chemistry, Faculty of Women for Arts, Science and EducationAin Shams UniversityCairoEgypt
  4. 4.ITODYS Laboratory, Leader of the Surface and Interface Research Team Université ParisDiderot, CNRS (UMR 7086)ParisFrance

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