The thesis was focused on the design of visible nanoparticles-containing photothermal inks in three different projects. In the first a nanoink containing partially pegylated spherical gold nanoparticles (NP) functionalised with a fluorophore was obtained with a complete quenching of the fluorescent emission followed by a thermal relaxation. This system features an extra photothermally active absorption band in addition to the one of the gold NP. The second project aimed to the stabilization of Prussian blue NP in physiological condition (i.e., pH 7.4) through protein corona formation with Human Serum Albumin (HSA). The suitable protein coating to guarantee a > 80% integrity level within 24h at pH 7.4 was found accompanied by a quantitative determination of the needed HSA. The third project was the preparation of spin-coated films of gadolinium(III)-doped Prussian Blue NP. The films chemical composition as well as their photothermal response after laser irradiation were characterised.
La tesi verte sulla realizzazione di inchiostri fototermici contenenti nanoparticelle (NP) in tre distinti progetti. 1) è stato ottenuto un inchiostro contenente NP sferiche d’oro funzionalizzate con un fluoroforo, di cui è stato ottenuto il quenching completo della fluorescenza, con rilassamento termico in seguito a irraggiamento, dunque con un'ulteriore banda di assorbimento fototermicamente attiva, oltre a quella della NP d'oro. 2) nello studio su inchiostri fototermici utilizzabili in condizioni fisiologiche, ci si è focalizzati sulla stabilizzazione delle NP di blu di Prussia in ambiente tipo in-vivo (pH 7.4) via formazione di protein corona con Human Serum Albumin (HSA). È stato ottenuto un rivestimento proteico che garantisce integrità > 80% a pH 7.4 entro 24 h e l’HSA necessaria è stata quantitificata. 3) si sono ottenuti film di NP di blu di Prussia dopate con Gd3+ mediante spin coating: è stata determinata la composizione chimica dei film e la loro risposta fototermica per irraggiamento laser, con eccellente omogeneità spaziale.
Sistemi ibridi di nanoparticelle di metalli nobili e fluorofori e nanoparticelle di Blu di Prussia per inchiostri fototermici visibili
COLOMBI, CHIARA
2025
Abstract
The thesis was focused on the design of visible nanoparticles-containing photothermal inks in three different projects. In the first a nanoink containing partially pegylated spherical gold nanoparticles (NP) functionalised with a fluorophore was obtained with a complete quenching of the fluorescent emission followed by a thermal relaxation. This system features an extra photothermally active absorption band in addition to the one of the gold NP. The second project aimed to the stabilization of Prussian blue NP in physiological condition (i.e., pH 7.4) through protein corona formation with Human Serum Albumin (HSA). The suitable protein coating to guarantee a > 80% integrity level within 24h at pH 7.4 was found accompanied by a quantitative determination of the needed HSA. The third project was the preparation of spin-coated films of gadolinium(III)-doped Prussian Blue NP. The films chemical composition as well as their photothermal response after laser irradiation were characterised.File | Dimensione | Formato | |
---|---|---|---|
COLOMBI_Chiara_Tesi_def.pdf
embargo fino al 20/09/2026
Dimensione
10.26 MB
Formato
Adobe PDF
|
10.26 MB | Adobe PDF |
I documenti in UNITESI sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/20.500.14242/195498
URN:NBN:IT:UNIPV-195498