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Design and proof of reversible micelle-to-vesicle multistimuli-responsive morphological regulations

Titelangaben

Jin, Qiao ; Luy, Christoph ; Ji, Jian ; Agarwal, Seema:
Design and proof of reversible micelle-to-vesicle multistimuli-responsive morphological regulations.
In: Journal of Polymer Science Part A: Polymer Chemistry. Bd. 50 (2012) Heft 3 . - S. 451-457.
ISSN 0360-6376
DOI: https://doi.org/10.1002/pola.25050

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

Multistimuli-responsive precise morphological control over self-assembled polymers is of great importance for applications in nanoscience as drug delivery system. A novel pH, photoresponsive, and cyclodextrin-responsive block copolymer were developed to investigate the reversible morphological transition from micelles to vesicles. The azobenzene-containing block copolymer poly(ethylene oxide)-b-poly(2-(diethylamino)ethyl methacrylate-co-6-(4-phenylazo phenoxy)hexyl methacrylate) PEO-b-P(DEAEMA-co-PPHMA) was synthesized by atom transfer radical polymerization. This system can self-assemble into vesicles in aqueous solution at pH 8. On adjusting the solution pH to 3, there was a transition from vesicles to micelles. The same behavior, that is, transition from vesicles to micelles was also realizable on addition of β-cyclodextrin (β-CD) to the PEO-b-P(DEAEMA-co-PPHMA) solution at pH 8. Furthermore, after β-CD was added, alternating irradiation of the solution with UV and visible light can also induce the reversible micelle-to-vesicle transition because of the photoinduced trans-to-cis isomerization of azobenzene units. The multistimuli-responsive precise morphological changes were studied by laser light scattering, transmission electron microscopy, and UV–vis spectra. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: azobenzene; host-guest systems; micelles; morphological regulation; stimuli-responsive; vesicles
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II > Lehrstuhl Makromolekulare Chemie II - Univ.-Prof. Dr. Andreas Greiner
Profilfelder > Advanced Fields > Polymer- und Kolloidforschung
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Kolloide und Grenzflächen - BZKG
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Profilfelder
Profilfelder > Advanced Fields
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 02 Apr 2015 09:20
Letzte Änderung: 25 Feb 2022 08:43
URI: https://eref.uni-bayreuth.de/id/eprint/9794