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Identifier

000355701

http://elocus.lib.uoc.gr/

Title

Νέα πορώδη στερεά ανόργανου-οργανικού σκελετού

Alternative Title

New porous metal-organic frameworks

Author

Παπαδάκη, Ιωάννα Γεωργίου

Thesis advisor

Τρικαλίτης, Παντελής

Abstract

Porous coordination polymers, also known as Metal-Organic Frameworks (MOFs), represent a new class of porous materials and it is one of the fastest growing fields in materials chemistry. MOFs are highly crystalline materials that are constructed by assembly of metal clusters, known as Secondary Building Units (SBUs), with multidentate organic ligands. Their rapid development lies in their special structural characteristics, properties and possible applications in important fields including catalysis, magnetism, luminescence and gas storage/separation. Designing new materials for specific applications is of great interest. For this purpose, some strategies have been developed in order to enhance properties that are important for a specific application (e.g. gas storage). One of the most important strategies is functionalization of an organic ligand with groups that allow the immobilization of “hard” metallic centres such as Li⁺ and Mg²⁺. Following this strategy, we whose to introduce sulfonic groups (-SO₃H) in commercial available ligands in order to use sulfonate anions (-SO₃^-) for immobilizing small alkali metal ions through electrostatic interactions. In the present thesis, the synthesis of 4,8-disulfonyl-2,6- naphthalenedicarboxylic acid is described as well as its use in the construction of new coordination polymers. This new ligand has two different functional groups, namely carboxylic (-COOH) and sulfonic (-SO₃H) groups. Overall, nine new coordination polymers with different architectures and one ionic compound have been synthesized. These materials have been characterised with several techniques including singlecrystal and powder X-ray diffraction, thermogravimetric analysis, infrared spectroscopy (IR), nuclear magnetic resonance spectroscopy (NMR), Mössbauer spectroscopy, magnetic measurements and elemental C, H, N analysis.

Language

Greek

Subject

gas storage

metal-organic frameworks

porous coordination polymers

secondary building units

δευτερογενείς δομικές μονάδες

πορώδη πολυμερή συναρμογής

προσρόφηση αερίων

στερεά ανόργανου-οργανικού σκελετού

Issue date