GHasemi Toosi, Faeze | 2012

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 42820 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Ghanbari, Bahram
  7. Abstract:
  8. The purpose of this project is the synthesis and characterization of a group of phenolic amino acidic derivatives that are studied in both solid phases as well as their solutions. For this, new phenol derivatives of serin and isoleucine amino acids were synthesized and characterized by 1H NMR , 13C NMR, IR spectroscopy as well as elemental analysis. These ligands were utilized to prepare LSF perovskite membrane. According to their XRD patterns, it was concluded that the powdered precursor prepared by serin derivative has shown better qualification and less intermediate phase in the synthesized perovskite membrane similar to the sample prepared by applying EDTA. Furthermore, in the previous research undertaken in this laboratory for similar phenol derivatives made from glycin, alanin, β- alanin and leucine amino acids which had been used to prepare a LSCF perovskite membrane in turn, the same improvement in perovskite formation was observed. In order to interpret these observations, the complex formation of the synthesized ligands with the cations incorporated in these membrane, e.g. Fe(III) , La(III), were determined by potentiometry ,spectroscopies 1HNMR and Uv-vis methods. The comparison of their calculated formation constants for Fe(III) showed that the 5-membered chelate rings could accommodate the cations better than their 6-membered homologue, this is while the situation for La(III) was inverse.

  9. Keywords:
  10. Hydrogen ; Amino Acid ; Phenol ; Perovskite ; Inorganic Membrane ; Formation Constant

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