Unit:
Κατεύθυνση Ανόργανη Χημεία και Εφαρμογές της στη ΒιομηχανίαLibrary of the School of Science
Supervisors info:
Ιωάννης Παπαευσταθίου, Αναπληρωτής Καθηγητής, Τμήμα Χημείας, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών
Original Title:
Μεταλλο-Οργανικές Κατασκευές που βασίζονται σε Μαγνήτες Μοναδικού Μορίου
Translated title:
Metal-Organic Frameworks based on Single Molecule Magnets
Summary:
One of the most active subjects in the field of inorganic synthesis that is related to the field of molecular magnetism is the discovery of new materials which can sustain their magnetization, in the absence of an external magnetic field. Single Molecule Magnets (SMMs), as they’re called, are rapidly increasing over the last two decades, with Mn, Fe, Co and Ni clusters taking the leading role. Moreover, an equally interesting field of inorganic synthesis that is developing exponentially over the last two-three decades is Metal-Organic Frameworks (MOFs). MOFs are multidimensional polymeric compounds which contain potential voids and are based on metal ions or metal clusters and bridging organic ligands. Therefore, the combination of the previously discussed fields is expected to be of great interest.
The use of SMMs as secondary building units (SBUs) for MOF synthesis has been proved to lead to new multifunctional materials that may combine the inherent magnetic properties of the clusters with the network’s porosity of the MOFs1,2. Aiming to create new Metal-Organic Frameworks which are based on metal clusters that present interesting magnetic properties as SBUs, we designed, synthesized and characterized an organic ligand that has two roles. The ligand is a salicylaldoxime which bears a carboxylic group on the side. Combining salicylaldoximes with Mn(III) ions has led to SMMs3 whereas the presence of a side carboxylic group has the ability to bridge with neighboring metal ions. Thus, the same organic ligand is capable of forming SMM-clusters while bridging the clusters either together or with other metal ions, in the absence of any other bridging ligand.
Main subject category:
Science
Keywords:
MOFs, Metal-Organic Frameworks, SMM, Single Molecule Magnet
File:
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Alex's Master -gsp.pdf
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File access is restricted only to the intranet of UoA.
