Unit:
Κατεύθυνση Ανόργανη Χημεία και ΤεχνολογίαLibrary of the School of Science
Supervisors info:
Παπαευσταθίου Ιωάννης Επίκ. Καθηγητής
Original Title:
Σύνθεση, Χαρακτηρισμός και Μελέτη Ιδιοτήτων Νέων Μεταλλο-οργανικών Κατασκευών που Βασίζονται σε Οξαλαμιδικούς Υποκαταστάτες
Translated title:
Synthesis, characterization and properties of new metal-organic frameworks based on oxalamide ligands
Summary:
Metal-organic frameworks (MOFs) are crystalline inorganic-organic hybrid
materials that consist of metal ions and organic molecules connected in space
to produce an infinite one-, two-, and three demessional coordination polymers.
The MOFs are crystalline materials with ultrahigh porosity and enormous
internal surface area.
In this thesis, we studied the possibility of developing new metal-organic
frameworks that can act as detectors for various molecules released from
spoiled food, especially fish. The bridging ligands have, aside from the
bridging groups, functional groups eg (-NH, -C = O, -OH) in their "backbone" so
they can occur interactions between the metallo-organic frameworks and guest
molecule.
For this purpose were synthesized and characterized two new dicarboxylic
ligands based on oxalamide and with utilized them for the synthesis of three
new metallo-organic frameworks of magnesium and barium. In one of these
frameworks the original ligand hydrolysed. The three metallo-organic frameworks
were characterized by X-ray crystallography (both powder and single-crystal),
were studied by infrared spectroscopy, and thermal techniques while we studied
the possibility of activating them by heating under nitrogen flow and the
possibility of detection of small (volatile) organic molecules by using thermal
analysis, infrared spectroscopy and photoluminescence. These frameworks after
activation experiments were immersed in different analytes and found that the
intensity and wavelength of their photoluminescence spectra changed, indicating
that they are probes / sensors for the tested analytes.
Keywords:
Metal-Organic Frameworks, Crystal structure, Sensors for spoiled foods, Metal complexes, photoluminescence
Number of index pages:
16-22
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