Radiopharmaceuticals play a crucial role in nuclear medicine, both for imaging (SPECT, PET) and for targeted therapy. This thesis focuses on the physicochemical characterization and coordination ability of acyclic hexadentate chelators toward two metals with potential relevance for diagnostic applications: Ti-45 and Mn-52. In particular, the interaction in aqueous solution between a chelator and the metal cations Mn²⁺ and Ti⁴⁺(emerging candidates in PET and MRI imaging) was investigated. The techniques employed (potentiometry, NMR spectroscopy, and UV-Vis spectroscopy) enabled the determination of the protonation constants of the chelators and the formation constants of the complexes, providing useful information for evaluating the stability and suitability of these systems in the design of safe and effective radiopharmaceuticals.
I radiofarmaci rivestono un ruolo cruciale nella medicina nucleare, sia per l’imaging (SPECT, PET) sia per la target therapy. Questa tesi si concentra sulla caratterizzazione chimico-fisica e sulla capacità di coordinazione di chelanti esadentati aciclici nei confronti di due metalli con potenziale rilevanza per applicazioni diagnostiche: Ti-45 e Mn-52. In particolare, è stata studiata l’interazione in soluzione acquosa tra un chelante e i cationi Mn²⁺ e Ti⁴⁺, metalli potenzialmente emergenti nell’imaging PET e MRI. Le tecniche utilizzate (potenziometria e spettroscopia NMR ed UV-Vis) hanno permesso la determinazione delle costanti di protonazione dei chelanti e delle costanti di formazione dei complessi, fornendo informazioni utili per la valutazione della stabilità e dell’idoneità di questi sistemi nella progettazione di radiofarmaci sicuri ed efficaci.
Studio della formazione di complessi di interesse radiofarmaceutico tra chelanti esadentati aciclici con Ti(IV) e Mn(II)
SALMASO, PAOLO
2024/2025
Abstract
Radiopharmaceuticals play a crucial role in nuclear medicine, both for imaging (SPECT, PET) and for targeted therapy. This thesis focuses on the physicochemical characterization and coordination ability of acyclic hexadentate chelators toward two metals with potential relevance for diagnostic applications: Ti-45 and Mn-52. In particular, the interaction in aqueous solution between a chelator and the metal cations Mn²⁺ and Ti⁴⁺(emerging candidates in PET and MRI imaging) was investigated. The techniques employed (potentiometry, NMR spectroscopy, and UV-Vis spectroscopy) enabled the determination of the protonation constants of the chelators and the formation constants of the complexes, providing useful information for evaluating the stability and suitability of these systems in the design of safe and effective radiopharmaceuticals.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/94054