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(Synthesis and Comparative Study on Complexation of OxNy-Azacrown Macrocyclic Ligands with [60] Fullerene and Cu(II

Varmazyad, Mahboubeh | 2012

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 43799 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Ghanbari, Bahram
  7. Abstract:
  8. In our previous work in this laboratory, macrocycle containingO_2 N_2 and O_2 N_3- donor set with various ring size were synthesized. The intraction of macrocyles with [60]fullerene were determined. In this research, we synthesized 22-membered aza-crown macrocycle ligand containing O_4 N_2- donor set and characterized by NMRspectroscopy. The intraction of macrocycle with [60]fullerene were also investigated by UV-Visible spectroscopy. The formation constant was determined applying Benesi--Hildebrand equation. The result has been showed that O_4 N_2 macrocyle had better complexation with [60]fullerene in comparision of O_2 N_3 and O_2 N_2 donor sets. Then, the interaction of O_4 N_2 with both [60]fullerene andCu(II), was evaluated in terms of the complex formation by applying Benesi-Hildebrand equation. Experimentally, O_4 N_2 macroring showed higher formation constant with [60]fullerene. In the next study, the complex formation of O_2 N_3- donor set from 18 to 21-membered macrorings with Cu(II) were determined by two method as cyclic voltammetry as well asUV-Visible spectroscopy. The results were compared with the previous results, for complex formation of these macrocycle with fullerene. Conclusively, it was observed that the complexation of 20-memberedO_2 N_3- donor macroring rendered the best formation constants towards both [60]fullerene as well as Cu(II)
  9. Keywords:
  10. Fullerene ; Cyclic Voltammetry ; Cations ; Azacrown ; Macrocyclic Ligand

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