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Αρχική    Synthesis of triple stimuli-responsive diblock and triblock copolymers and their self-assembly behavior  

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Κωδικός Πόρου 000446229
Τίτλος Synthesis of triple stimuli-responsive diblock and triblock copolymers and their self-assembly behavior
Άλλος τίτλος Σύνθεση τριπλά-αποκρίσιμων δισσυσταδικών και τρισυσταδικών συμπολυμερών και η αυτο-οργάνωσή τους
Συγγραφέας Γούναρης Νικολαΐδης, Δημήτριος Ι.
Σύμβουλος διατριβής Βαμβακάκη, Μαρία
Περίληψη Light-responsive block copolymers have attracted great interest for a variety of technological and biomedical applications, due to their remote and spatiotemporally controlled response to the external stimulus. Photo-responsive self-assembled polymer micelles have been proposed for a variety of applications, such as nanocarriers to encapsulate hydrophobic molecules within their cores and release them in response to light irradiation. In this work, multifunctional, stimuli-responsive triblock copolymers have been synthesized via reversible addition fragmentation chain transfer (RAFT) polymerization. The well-defined triblock copolymers, containing a hydrophobic spiropyran methacrylate (SPMA) block, a hydrophilic, pHand temperature-sensitive poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) block and a hydrophilic poly(ethylene glycol) (PEG) block, were self-assembled into spherical core-shell-corona micelles in water. The core of the micelles is sensitive to changes of the solution temperature and pH as well as to light irradiation, whereas the shell is temperature- and pH-responsive. In addition, diblock copolymers with a hydrophobic SPMA block and a hydrophilic PDMAEMA block, which selfassembled into core-shell micelles in water, were synthesized by RAFT polymerization. The response and the morphology of the copolymer micelles, upon UV and visible light irradiation, were monitored by UV/vis spectroscopy and field emission scanning electron microscopy (FESEM). This study focuses on the detailed investigation and exploitation of the adjustable polymorphism, from the nano to the micro scale, of the spiropyran-based self-assemblies.
Φυσική περιγραφή 71 φύλλα : πίν., σχήμ., εικ. (μερ. εγχρ.) ; 30 εκ.
Γλώσσα Αγγλικά
Θέμα Stimuli polymers
Ημερομηνία έκδοσης 2022-07-28
Συλλογή   Σχολή/Τμήμα--Σχολή Θετικών και Τεχνολογικών Επιστημών--Τμήμα Χημείας--Μεταπτυχιακές εργασίες ειδίκευσης
  Τύπος Εργασίας--Μεταπτυχιακές εργασίες ειδίκευσης
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