Tesi etd-09242019-214943 |
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Tipo di tesi
Tesi di laurea magistrale
Autore
POMPILIO, MICHELE
URN
etd-09242019-214943
Titolo
Inhomogeneity at the surface: multi-scale study of the optical properties of a smart polymer
Dipartimento
FISICA
Corso di studi
FISICA
Relatori
relatore Prof. Fuso, Francesco
commissario Prof. Mannella, Riccardo
commissario Prof. Fidecaro, Francesco
commissario Prof. Forti, Francesco
commissario Prof. Guadagnini, Enore
commissario Prof. Leporini, Dino
commissario Prof. Roddaro, Stefano
commissario Prof. Shore, Steven Neil
commissario Prof. Mannella, Riccardo
commissario Prof. Fidecaro, Francesco
commissario Prof. Forti, Francesco
commissario Prof. Guadagnini, Enore
commissario Prof. Leporini, Dino
commissario Prof. Roddaro, Stefano
commissario Prof. Shore, Steven Neil
Parole chiave
- aggregati molecolari
- confocal microscopy
- host-guest system
- materiali smart
- microscopia confocale
- molecular aggregates
- sistemi host-guest
- smart materials
- termocromismo
- thermochromism
Data inizio appello
16/10/2019
Consultabilità
Completa
Riassunto
Scopo della tesi è quello di mostrare l'inomogeneità su scala micrometrica delle proprietà ottiche di un polimero smart termocromico composto da un sistema host-guest di derivante perilenico disperso in una matrice di LLDPE, con particolare attenzione alla loro dipendenza dalla temperatura. Tali proprietà sono state studiate utilizzando un microscopio confocale, progettato ed implementato dal candidato. L'analisi ha portato, inoltre, alla formulazione di un semplice modello, basato sul modello isodesmico, che leghi l'equilibrio tra le possibili forme di aggregazione del colorante, responsabile del termocromismo del materiale, alla concentrazione locale di colorante sulla superficie del polimero.
The main goal of the thesis is to demonstrate the inhomogenehity on a micrometric scale of the optical properties of a thermochromic smart polymer consisting of an host-guest system of a perylene derivative dispersed within an LLDPe matrix, with particular focus on the their dependence on the temperature. These properties have been studied by means of a confocal microscope, designed and implemented by the candidate. The analysis also led to the development of a simple model, based on the isodesmic model, correlating the equilibrium between the possible aggregation forms of the dye, which is responsible for the thermochromism of the material, to the local dye concentration on the polymer's surface.
The main goal of the thesis is to demonstrate the inhomogenehity on a micrometric scale of the optical properties of a thermochromic smart polymer consisting of an host-guest system of a perylene derivative dispersed within an LLDPe matrix, with particular focus on the their dependence on the temperature. These properties have been studied by means of a confocal microscope, designed and implemented by the candidate. The analysis also led to the development of a simple model, based on the isodesmic model, correlating the equilibrium between the possible aggregation forms of the dye, which is responsible for the thermochromism of the material, to the local dye concentration on the polymer's surface.
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Inhomoge...rface.pdf | 76.24 Mb |
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