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Murmiliuk A, Filippov SK, Rud O, Košovan P, Tošner Z, Radulescu A, Skandalis A, Pispas S, Šlouf M, Štěpánek M. Reversible multilayered vesicle-like structures with fluid hydrophobic and interpolyelectrolyte layers. J Colloid Interface Sci 2021; 599:313-325. [PMID: 33957424 DOI: 10.1016/j.jcis.2021.04.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 03/31/2021] [Accepted: 04/12/2021] [Indexed: 10/21/2022]
Abstract
Hydrophobic blocks of amphiphilic block copolymers often form glassy micellar cores at room temperature with a rigid structure that limits their applications as nanocapsules for targeted delivery. Nevertheless, we prepared and analyzed core/shell micelles with a soft core, formed by a self-assembled block copolymer consisting of a hydrophobic block and a polycation block, poly(lauryl acrylate)-block-poly(trimethyl-aminoethyl acrylate) (PLA-QPDMAEA), in aqueous solution. By light and small-angle neutron scattering, by transmission electron microscopy and by fluorescence spectroscopy, we showed that these core/shell micelles are spherical and cylindrical with a fluid-like PLA core and a positively charged outer shell and that they can encapsulate and release hydrophobic solutes. Moreover, after mixing these PLA-QPDMAEA core/shell micelles with another diblock copolymer, consisting of a hydrophilic block and a polyanion block, namely poly(ethylene oxide)-block-poly(methacrylic acid) (PEO-PMAA), we observed the formation of novel vesicle-like multicompartment structures containing both soft hydrophobic and interpolyelectrolyte (IPEC) layers. By combining small-angle neutron scattering with self-consistent field modeling, we confirmed the formation of these complex vesicle-like structures with a swollen PEO core, an IPEC inner layer, a PLA soft layer, an IPEC outer layer and a loose PEO corona. Thus, these multicompartment micelles with fluid and IPEC layers and a hydrophilic corona may be used as nanocapsules with several tunable properties, including the ability to control the thickness of each layer, the charge of the IPEC layers and the stability of the micelles, to deliver both hydrophobic and multivalent solutes.
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Affiliation(s)
- Anastasiia Murmiliuk
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00 Prague 2, Czech Republic
| | - Sergey K Filippov
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, 20520 Turku, Finland; Department of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, 050040 Almaty, Kazakhstan
| | - Oleg Rud
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00 Prague 2, Czech Republic
| | - Peter Košovan
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00 Prague 2, Czech Republic
| | - Zdeněk Tošner
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00 Prague 2, Czech Republic
| | - Aurel Radulescu
- Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science@MLZ, Lichtenbergstraße 1, D-85747 Garching, Germany
| | - Athanasios Skandalis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náméstí 2, Prague 6 162 06, Czech Republic
| | - Miroslav Štěpánek
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00 Prague 2, Czech Republic.
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A novel environmentally friendly method in solid phase for in situ synthesis of chitosan-gold bionanocomposites with catalytic applications. Carbohydr Polym 2019; 207:533-541. [DOI: 10.1016/j.carbpol.2018.12.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 10/04/2018] [Accepted: 12/06/2018] [Indexed: 02/02/2023]
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Chen D, Sun Z, Russell TP, Jin L. Coassembly Kinetics of Graphene Oxide and Block Copolymers at the Water/Oil Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8961-8969. [PMID: 28813609 DOI: 10.1021/acs.langmuir.7b02009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The coassembly kinetics of graphene oxide (GO) nanosheets and diblock copolymers at the water/toluene interface is probed by tracking the dynamic interfacial tension using pendant drop tensiometry. The diblock copolymer significantly enhances the surfactancy of the GO nanosheets at the interface. It is found that diblock copolymers rapidly adsorb to the water/toluene interface and enhance the adsorption affinity of GO nanosheets to the interface. The continuous adsorption of GO at the interface leads to a random loose packing state, at which the adsorbed GO and diblock copolymers start to form an elastic film. After this transition, GO continues to adsorb to the interface, however, at a much slower speed, yielding a more solidlike elastic film in the long time equilibrium limit.
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Affiliation(s)
- Dayong Chen
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles , Los Angeles, California 90095, United States
| | - Zhiwei Sun
- Department of Polymer Science and Engineering, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Thomas P Russell
- Department of Polymer Science and Engineering, University of Massachusetts , Amherst, Massachusetts 01003, United States
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University , 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
| | - Lihua Jin
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles , Los Angeles, California 90095, United States
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Shou Q, Guo C, Yang L, Jia L, Liu C, Liu H. Effect of pH on the single-step synthesis of gold nanoparticles using PEO–PPO–PEO triblock copolymers in aqueous media. J Colloid Interface Sci 2011; 363:481-9. [DOI: 10.1016/j.jcis.2011.07.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/10/2011] [Accepted: 07/11/2011] [Indexed: 11/15/2022]
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Lagopati N, Kitsiou P, Kontos A, Venieratos P, Kotsopoulou E, Kontos A, Dionysiou D, Pispas S, Tsilibary E, Falaras P. Photo-induced treatment of breast epithelial cancer cells using nanostructured titanium dioxide solution. J Photochem Photobiol A Chem 2010. [DOI: 10.1016/j.jphotochem.2010.06.031] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Meristoudi A, Athanasekos L, Vasileiadis M, Pispas S, Mousdis G, Karoutsos E, Alexandropoulos D, Du H, Tsigara A, Kibasi K, Perrone A, Vainos NA. Nanocomposite hybrid photonic media for remote point sensors. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1464-4258/11/3/034005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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