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Identifier 000437587
Title Σύνθεση και χαρακτηρισμός πολυλειτουργικών φωσφονικών υποκαταστατών και χημεία συναρμογής τους
Alternative Title Synthesis and characterization polyfunctional phosphonic ligands and their coordination chemistry
Author Χαχλάκη, Ελπινίκη Σ.
Thesis advisor Δημάδης, Κωνσταντίνος
Reviewer Νεοχωρίτης, Κωνσταντίνος
Στούμπος, Κωνσταντίνος
Abstract Phosphonic acids belong to a very interesting class of organophosphonic compounds, featuring a stable bond between carbon and phosphorus. When combined with metal ions, inorganic-organic hybrid materials are formed, which are called metal phosphonates and are closely related to the metal-organic frameworks or MOFs. Compared to MOFs, metal phosphonates are not sensitive to air and are also chemically and thermally stable and insoluble in many solvents. For this reason they present a variety of applications in areas such as biotechnology, fuel cells, proton conduction, catalysis and others. The present work presents the synthesis of six multifunctional phosphonic ligands, which are synthesized through different reaction pathways. The sym-triazine phosphonic acid ligand is synthesized using the Michaelis – Arbuzov reaction, the diethyl (2-azidoethyl) phosphonate ligand synthesized with nucleophilic substitution SN2 and the (2-(4-phenyl-1H-1,2,3- triazol-1-yl) ethyl) phosphonic acid with a cyclic addition [3+2] “click” reaction using copper catalyst. Finally, the aminophosphonate ligands ((diallylamino)methyl) phosphonic acid, ((diethylamino)methyl) phosphonic acid and ((dipropylamino)methyl) phosphonic acid are synthesized based on the Mannich-type reaction. The above ligands were studied in reactions with divalent ions of alkaline earth metals and transition metals but also with trivalent ions of lanthanides in various metal:ligand ratios and experimental conditions (pH, temperature). The reaction between the ligand (2-(4-phenyl-1H-1,2,3-triazol-1-yl) ethyl) and Zn2+ ions was successful, while the decomposition of sym-triazine phosphonic acid ligand was observed when reacted with Zn2+ ions.
Language Greek
Subject Metallphosphonic compounds
Phosphonic ligands
Μεταλλοφωσφονικές ενώσεις
Φωσφονικοί υποκαταστάτες
Issue date 2021-03-26
Collection   School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
  Type of Work--Post-graduate theses
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