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

Title data

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. Vol. 50 (1 February 2012) Issue 3 . - pp. 451-457.
ISSN 0360-6376
DOI: https://doi.org/10.1002/pola.25050

Official URL: Volltext

Abstract in another language

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

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: azobenzene; host-guest systems; micelles; morphological regulation; stimuli-responsive; vesicles
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Profile Fields > Advanced Fields > Polymer and Colloid Science
Research Institutions > Research Centres > Bayreuth Center for Colloids and Interfaces - BZKG
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 02 Apr 2015 09:20
Last Modified: 02 Apr 2015 09:20
URI: https://eref.uni-bayreuth.de/id/eprint/9794