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http://hdl.handle.net/2445/142748
Title: | Preparation and Characterisation of Self-Assembled Dye Fibers |
Author: | Fruh, Maxime |
Director/Tutor: | Rodríguez Abreu, Carlos |
Keywords: | Fibres fluorescents Hidrogel Treballs de fi de màster Fluorescent fibers Hydrogel Master's theses |
Issue Date: | Jul-2019 |
Abstract: | Two types of fibers have been prepared by self-assembly. The first system is made of Astrophloxine hydrogel fibers, based on the stacking of molecules by π- π interactions. Various properties of the hydrogel have been characterized with UV-vis absorbance, Fluorescence spectroscopy, calorimetric profiles, and rheology. The hydrogel shows temperature-dependent fluorescence. Above the melting temperature T>44°C, fluorescence and hydrogel structure are lost, but they are recovered upon cooling, demonstrating that the process is reversible. The fibers also showed a temperature-dependent birefringency. The second system of fibers was formed by ionic self-assembly (ISA) of two oppositely charged dyes. This system was characterized by SEM and TEM, as well as X-Ray diffraction. The ISA fibers were able to encapsulate a drug, showing promise for controlled drug release |
Note: | Màster en Nanociència i Nanotecnologia, Facultat de Física, Universitat de Barcelona, Curs: 2018-2019. Tutor: Carlos Rodriguez-Abreu |
URI: | http://hdl.handle.net/2445/142748 |
Appears in Collections: | Màster Oficial - Nanociència i Nanotecnologia |
Files in This Item:
File | Description | Size | Format | |
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Maxime FRUH.pdf | 1.14 MB | Adobe PDF | View/Open |
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