Lanthanide-Organic Frameworks for Optical and Catalytic Applications


This PhD programme aims to systematically isolate and characterise, in the solid state, novel coordination polymers. The presence of rigid groups having, in particular, oxygen and nitrogen atoms, is expected to induce interesting photoluminescent properties (high quantum yields and lifetimes, e cient energy transference pathways) which may allow the use of the polymeric compounds in the production of functional devices. Synthetic approaches have been ne-tuned for each material and were preferably based on hydrothermal and microwave-assisted syntheses. The structure of the materials was elucidated from X-ray di raction methods (single-crystal or powder data) in tandem with other techniques such as solid-state NMR, electron microscopy, thermal analyses, vibrational spectroscopy and elemental composition studies. The microcrystalline compounds were systematically studied in order to investigate other properties besides the photoluminescence. Some of the materials revealed multifunctional behaviour since they presented simultaneously life times in the order of milliseconds, high quantum yields and high performance as heterogeneous catalysts. The magnetic properties of an erbium-based compound were also studied, as well as the adsorption and solvent exchange behavior of a porous structure based on cerium.

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Patrícia Rodrigues da Silva

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Filipe Alexandre Almeida Paz


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