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Maitland GL, Liu M, Neal TJ, Hammerton J, Han Y, Worrall SD, Topham PD, Derry MJ. Block copolymer synthesis in ionic liquid via polymerisation-induced self-assembly: a convenient route to gel electrolytes. Chem Sci 2024; 15:4416-4426. [PMID: 38516087 PMCID: PMC10952082 DOI: 10.1039/d3sc06717c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/05/2024] [Indexed: 03/23/2024] Open
Abstract
We report for the first time a reversible addition-fragmentation chain transfer polymerisation-induced self-assembly (RAFT-PISA) formulation in ionic liquid (IL) that yields worm gels. A series of poly(2-hydroxyethyl methacrylate)-b-poly(benzyl methacrylate) (PHEMA-b-PBzMA) block copolymer nanoparticles were synthesised via RAFT dispersion polymerisation of benzyl methacrylate in the hydrophilic IL 1-ethyl-3-methyl imidazolium dicyanamide, [EMIM][DCA]. This RAFT-PISA formulation can be controlled to afford spherical, worm-like and vesicular nano-objects, with free-standing gels being obtained over a broad range of PBzMA core-forming degrees of polymerisation (DPs). High monomer conversions (≥96%) were obtained within 2 hours for all PISA syntheses as determined by 1H NMR spectroscopy, and good control over molar mass was confirmed by gel permeation chromatography (GPC). Nanoparticle morphologies were identified using small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM), and further detailed characterisation was conducted to monitor rheological, electrochemical and thermal characteristics of the nanoparticle dispersions to assess their potential in future electronic applications. Most importantly, this new PISA formulation in IL facilitates the in situ formation of worm ionogel electrolyte materials at copolymer concentrations >4% w/w via efficient and convenient synthesis routes without the need for organic co-solvents or post-polymerisation processing/purification. Moreover, we demonstrate that the worm ionogels developed in this work exhibit comparable electrochemical properties and thermal stability to that of the IL alone, showcasing their potential as gel electrolytes.
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Affiliation(s)
- Georgia L Maitland
- Aston Advanced Materials Research Centre, Aston University Birmingham B4 7ET UK
| | - Mingyu Liu
- Aston Advanced Materials Research Centre, Aston University Birmingham B4 7ET UK
| | - Thomas J Neal
- EaStCHEM School of Chemistry, The University of Edinburgh Joseph Black Building, David Brewster Road Edinburgh EH9 3FJ UK
| | - James Hammerton
- Aston Advanced Materials Research Centre, Aston University Birmingham B4 7ET UK
| | - Yisong Han
- Department of Physics, University of Warwick Coventry CV4 7AL UK
| | - Stephen D Worrall
- Aston Advanced Materials Research Centre, Aston University Birmingham B4 7ET UK
| | - Paul D Topham
- Aston Advanced Materials Research Centre, Aston University Birmingham B4 7ET UK
| | - Matthew J Derry
- Aston Advanced Materials Research Centre, Aston University Birmingham B4 7ET UK
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Bhushan V, Heitz MP, Baker GA, Pandey S. Ionic Liquid-Controlled Shape Transformation of Spherical to Nonspherical Polymersomes via Hierarchical Self-Assembly of a Diblock Copolymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5081-5088. [PMID: 33845575 DOI: 10.1021/acs.langmuir.1c00821] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Here, we report the self-assembly of poly(ethylene glycol) methyl ether-block-poly(ε-caprolactone) (PEG-b-PCL) copolymer in three ionic liquids (ILs) possessing different cations with common bis(trifluoromethylsulfonyl)imide anion. The observed polymeric nanostructures in ILs were directly visualized by room temperature conventional transmission and field emission scanning electron microscopy and were further examined for their size and shape by dynamic light scattering technique. The results show that through changes in the concentration of PEG-b-PCL and/or changing the solvent by using a different IL, we can effectively induce shape transformation of self-assembled PEG-b-PCL nanostructures in order to generate nonspherical polymersomes, such as worm-like aggregates, stomatocytes, nanotubes, large hexagonal and tubular-shaped polymersomes. These findings provide a promising platform for the design of biodegradable soft dynamic systems in the micro-/nano-motor field for cancer-targeted delivery, diagnosis and imaging-guided therapy, and controlled release of therapeutic drugs for treatment of many diseases. Non-spherical polymersome-based vaccines may be taken up more efficiently, especially against viruses for pulmonary drug delivery than the spherical polymersomes-based.
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Affiliation(s)
- Vidiksha Bhushan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Mark P Heitz
- Department of Chemistry and Biochemistry, State University of New York at Brockport, Brockport, New York, New York 14420, United States
| | - Gary A Baker
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Siddharth Pandey
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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3
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Liu L, Gou S, Ma Y, Zhou L, He Y, Liu L, Tang L, Fang S. A Thermal Thickening System Based on the Self-Assembly of a Zwitterionic Hydrophobic Association Polymer and Surfactant. Aust J Chem 2021. [DOI: 10.1071/ch20223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The zwitterionic monomer, 1-(2-hydroxypropyl-sulfo)-acrylamide ethyl-N,N-dimethyl ammonium chloride (MeSA) was copolymerised with acrylamide (AM), acrylic acid (AA), and a hydrophobic monomer N,N-diallyl oleamide (DNDA) to obtain the zwitterionic hydrophobic association polymer AM/AA/DNDA/MeSA. The structure of the hydrophobic association polymer was characterised by 1H NMR, FT-IR, and intrinsic viscosity studies. The self-assembly system of the polymer and the surfactant Tween-40 was then formed, and the rheological properties and adsorptive performance of the self-assembly system were investigated. The result showed that the polymer–surfactant self-assembly system had good properties such as thickening, temperature resistance, salt resistance, and shear resistance. It is shown that the thermal thickening phenomenon, which allows the system to be used as a good petrochemical product in a high-temperature environment, provides a vital research foundation for the future application of this kind of self-assembly system.
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Kim D, Matsuoka H, Yusa SI, Saruwatari Y. Collapse Behavior of Polyion Complex (PIC) Micelles upon Salt Addition and Reforming Behavior by Dialysis and Its Temperature Responsivity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:15485-15492. [PMID: 33325225 DOI: 10.1021/acs.langmuir.0c02456] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Temperature-responsive polyion complex (PIC) micelles were prepared by using two diblock copolymers composed of a sulfobetaine chain (poly(sulfopropyldimethylammonium propylacrylamide), PSPP) and ionic chains (poly(sodium styrenesulfonate), PSSNa, or poly(3-(methacrylamido)propyltrimethylammonium chloride), PMAPTAC). Because the core is PIC and the shell is sulfobetaine with UCST-type temperature response, the corona expands and contracts in response to temperature. To control the size and uniformity of the PIC micelles, the collapse of PIC micelles by salt addition and the reforming behavior by dialysis were investigated by transmittance, DLS, TEM, AFM, and 1H NMR measurements. Investigation of the ionic species dependence of the added salt in the collapse behavior of PIC micelles revealed that it was dependent on the anionic species, although no dependence on the cationic species was observed. Its effectiveness was in the order of I- > Br- > Cl- > F-, which is in agreement with the order of ionic species with strong structural destruction in the Hofmeister series. Heterogeneous and large PIC micelles were formed by the simple mixing method. They collapsed by salt addition and were reformed by the dialysis method to form uniform and smaller PIC micelles. This is considered to be because a uniform and smaller micelle is formed to reform in equilibrium state by dialysis. The temperature response of PIC micelles formed by the simple mixing method and PIC micelles reformed by dialysis showed nearly the same temperature-transmittance curves. These results indicate that the temperature response of PIC micelles is affected by the concentration rather than the hydrodynamic radius. Furthermore, the stability of PIC micelles was found to be affected by the concentration temperature (the temperature at the time of concentration).
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Affiliation(s)
- Dongwook Kim
- Department of Polymer Chemistry, Kyoto University, Kyoto 615-8510, Japan
| | - Hideki Matsuoka
- Department of Polymer Chemistry, Kyoto University, Kyoto 615-8510, Japan
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Yoshiyuki Saruwatari
- Osaka Organic Chemical Industries Ltd., 7-20 Azuchi-Machi, 1-Chome, Chuo-ku, Osaka 541-0052, Japan
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5
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Ponkratov DO, Shaplov AS, Vygodskii YS. Metathesis Polymerization in Ionic Media. POLYMER SCIENCE SERIES C 2019. [DOI: 10.1134/s1811238219010144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Poschenrieder ST, Schiebel SK, Castiglione K. Stability of polymersomes with focus on their use as nanoreactors. Eng Life Sci 2017; 18:101-113. [PMID: 32624892 DOI: 10.1002/elsc.201700009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 05/09/2017] [Accepted: 07/04/2017] [Indexed: 11/12/2022] Open
Abstract
The increased membrane stability of polymersomes compared to their liposomal counterparts is one of their most important advantages. Due to this benefit, polymer vesicles are intended to be used not only as carrier systems for drug delivery purposes but also as nanoreactors for biotechnological applications. Within this work, the stability of polymersomes made of the triblock copolymer poly(2-methyloxazoline)15-poly(dimethylsiloxane)68-poly(2-methyloxazoline)15 (PMOXA15-PDMS68-PMOXA15) toward mechanical stress, typically prevailing in stirred-tank reactors being the most often used reactor type in the biotechnological industry, was characterized. Dynamic light scattering and turbidity measurements showed that stirrer rotation causing a maximum local energy dissipation of up to 1.23 W/kg-1 did not result in any loss of vesicle quality or quantity. Nevertheless, most probably due to local membrane defects, 6.6% release of the previously encapsulated model dye calcein was recognized at 25°C within 48 h. Moreover, increased temperature, leading to decreased membrane viscosity and increased membrane fluidity, respectively, led to a higher molecule leakage. Besides, the stability of polymersomes in two-phase systems was investigated. Although alkanes and ionic liquids were shown not to lead to complete vesicle damage, no efficient calcein retention was achieved in either case.
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Affiliation(s)
| | | | - Kathrin Castiglione
- Lehrstuhl für Bioverfahrenstechnik Technical University of Munich Garching Germany
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8
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Fang LF, Jeon S, Kakihana Y, Kakehi JI, Zhu BK, Matsuyama H, Zhao S. Improved antifouling properties of polyvinyl chloride blend membranes by novel phosphate based-zwitterionic polymer additive. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.01.044] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Kim PY, Ribbe AE, Russell TP, Hoagland DA. Visualizing the Dynamics of Nanoparticles in Liquids by Scanning Electron Microscopy. ACS NANO 2016; 10:6257-6264. [PMID: 27163648 DOI: 10.1021/acsnano.6b02432] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Taking advantage of ionic liquid nonvolatility, the Brownian motions of nanospheres and nanorods in free-standing liquid films were visualized in situ by scanning electron microscopy. Despite the imaging environment's high vacuum, a liquid cell was not needed. For suspensions that are dilute and films that are thick compared to the particle diameter, the translational and rotational diffusion coefficients determined by single-particle tracking agree with theoretical predictions. In thinner films, a striking dynamical pairing of nanospheres was observed, manifesting a balance of capillary and hydrodynamic interactions, the latter strongly accentuated by the two-dimensional film geometry. Nanospheres at high concentration displayed subdiffusive caged motion. Concentrated nanorods in the thinner films transiently assembled into finite stacks but did not achieve high tetratic order. The illustrated imaging protocol will broadly apply to the study of soft matter structure and dynamics with great potential impact.
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Affiliation(s)
- Paul Y Kim
- Department of Polymer Science and Engineering, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Alexander E Ribbe
- Department of Polymer Science and Engineering, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Thomas P Russell
- Department of Polymer Science and Engineering, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - David A Hoagland
- Department of Polymer Science and Engineering, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
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10
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Bharmoria P, Kumar A. Unusually high thermal stability and peroxidase activity of cytochrome c in ionic liquid colloidal formulation. Chem Commun (Camb) 2016; 52:497-500. [DOI: 10.1039/c5cc05722a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
All ionic liquid-based colloidal formulation as a thermally stable medium for enzyme biocatalysis.
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Affiliation(s)
- Pankaj Bharmoria
- AcSIR
- CSIR-Central Salt and Marine Chemicals Research Institute
- Bhavangar-364002
- India
| | - Arvind Kumar
- AcSIR
- CSIR-Central Salt and Marine Chemicals Research Institute
- Bhavangar-364002
- India
- Salt and Marine Chemicals Division
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11
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Zhou H, Liu C, Gao C, Qu Y, Shi K, Zhang W. Polymerization-induced self-assembly of block copolymer through dispersion RAFT polymerization in ionic liquid. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.28002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Heng Zhou
- Key Laboratory of Functional Polymer Materials of the Ministry of Education; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Institute of Polymer Chemistry, Nankai University; Tianjin 300071 China
| | - Chonggao Liu
- Key Laboratory of Functional Polymer Materials of the Ministry of Education; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Institute of Polymer Chemistry, Nankai University; Tianjin 300071 China
| | - Chengqiang Gao
- Key Laboratory of Functional Polymer Materials of the Ministry of Education; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Institute of Polymer Chemistry, Nankai University; Tianjin 300071 China
| | - Yaqing Qu
- Key Laboratory of Functional Polymer Materials of the Ministry of Education; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Institute of Polymer Chemistry, Nankai University; Tianjin 300071 China
| | - Keyu Shi
- Key Laboratory of Functional Polymer Materials of the Ministry of Education; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Institute of Polymer Chemistry, Nankai University; Tianjin 300071 China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Institute of Polymer Chemistry, Nankai University; Tianjin 300071 China
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12
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Ramireddy RR, Prasad P, Finne A, Thayumanavan S. Zwitterionic Amphiphilic Homopolymer Assemblies. Polym Chem 2015; 6:6083-6087. [PMID: 26779289 PMCID: PMC4713042 DOI: 10.1039/c5py00879d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Zwitterionic amphiphilic homopolymers can be conveniently prepared in one-pot using activated ester-based polymer precursors. We show that these zwitterionic polymers can (i) spontaneously self-assemble to form micelle-like and inverse micelle-like assemblies depending on the solvent environment; (ii) act as hydrophilic and hydrophobic nanocontainers in apolar and polar solvents respectively; (iii) undergo pH-responsive surface charge and size variations; (iv) exhibit least cytotoxicity compared to structurally analogous amphiphilic homopolymers.
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Affiliation(s)
| | - P Prasad
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003
| | - A Finne
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003
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13
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Khan M, Yang J, Shi C, Feng Y, Zhang W, Gibney K, Tew GN. Manipulation of polycarbonate urethane bulk properties via incorporated zwitterionic polynorbornene for tissue engineering applications. RSC Adv 2015. [DOI: 10.1039/c4ra14608e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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14
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Kania G, Kwolek U, Nakai K, Yusa SI, Bednar J, Wójcik T, Chłopicki S, Skórka T, Szuwarzyński M, Szczubiałka K, Kepczynski M, Nowakowska M. Stable polymersomes based on ionic–zwitterionic block copolymers modified with superparamagnetic iron oxide nanoparticles for biomedical applications. J Mater Chem B 2015; 3:5523-5531. [DOI: 10.1039/c5tb00182j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel biocompatible polymersomes with semipermeable ionic membranes were used as promising delivery systems.
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Affiliation(s)
- Gabriela Kania
- Faculty of Chemistry
- Jagiellonian University in Kraków
- Kraków 30-060
- Poland
| | - Urszula Kwolek
- Faculty of Chemistry
- Jagiellonian University in Kraków
- Kraków 30-060
- Poland
| | - Keita Nakai
- Department of Materials Science and Chemistry
- Graduate School of Engineering
- University of Hyogo
- Himeji
- Japan
| | - Shin-ichi Yusa
- Department of Materials Science and Chemistry
- Graduate School of Engineering
- University of Hyogo
- Himeji
- Japan
| | - Jan Bednar
- University of Grenoble 1/CNRS
- LIPhy UMR 5588
- Grenoble
- France
- Charles University in Prague
| | - Tomasz Wójcik
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University in Kraków
- Kraków 30-348
- Poland
| | - Stefan Chłopicki
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University in Kraków
- Kraków 30-348
- Poland
- Chair of Pharmacology
| | - Tomasz Skórka
- Department of Magnetic Resonance Imaging
- Institute of Nuclear Physics
- Polish Academy of Sciences
- Kraków 31-342
- Poland
| | | | | | - Mariusz Kepczynski
- Faculty of Chemistry
- Jagiellonian University in Kraków
- Kraków 30-060
- Poland
| | - Maria Nowakowska
- Faculty of Chemistry
- Jagiellonian University in Kraków
- Kraków 30-060
- Poland
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15
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Noro A, Tomita Y, Shinohara Y, Sageshima Y, Walish JJ, Matsushita Y, Thomas EL. Photonic Block Copolymer Films Swollen with an Ionic Liquid. Macromolecules 2014. [DOI: 10.1021/ma500517e] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Atsushi Noro
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Yusuke Tomita
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Yuya Shinohara
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Yoshio Sageshima
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Joseph J. Walish
- Department of Materials Science and Engineering,
Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yushu Matsushita
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Edwin L. Thomas
- Department of Materials Science and Engineering,
Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department
of Materials Science and Nanoengineering, Rice University, Houston, Texas 77251, United States
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17
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2011. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.05.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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18
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Greaves TL, Drummond CJ. Solvent nanostructure, the solvophobic effect and amphiphile self-assembly in ionic liquids. Chem Soc Rev 2013; 42:1096-120. [PMID: 23165291 DOI: 10.1039/c2cs35339c] [Citation(s) in RCA: 253] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The ability of ionic liquids (ILs) to support amphiphile self-assembly into a range of mesophase structures has been established as a widespread phenomenon. From the ILs evaluated as self-assembly media, the vast majority have supported some lyotropic liquid crystal phase formation. Many neat ionic liquids have been shown to segregate into polar and non-polar domains to form a nanostructured liquid. A very strong correlation between the nanostructure of the ionic liquid and its characteristics as an amphiphile self-assembly solvent has been found. In this review we discuss ionic liquids as amphiphile self-assembly media, and identify trends that can be used to distinguish which ionic liquids are likely to have good promotion properties as self-assembly media. In particular these trends focus on the nanostructure of neat ionic liquids, their solvent cohesive energy density, and the related solvophobic effect. We forecast that many more ILs will be identified as amphiphile self-assembly solvents in the future.
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Affiliation(s)
- Tamar L Greaves
- CSIRO Materials Science and Engineering, Bag 10, Clayton VIC 3169, Australia.
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Rao KS, So S, Kumar A. Vesicles and reverse vesicles of an ionic liquid in ionic liquids. Chem Commun (Camb) 2013; 49:8111-3. [DOI: 10.1039/c3cc44462g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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20
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Song H, Luo Z, Zhao H, Luo S, Wu X, Gao J, Wang Z. High tensile strength and high ionic conductivity bionanocomposite ionogels prepared by gelation of cellulose/ionic liquid solutions with nano-silica. RSC Adv 2013. [DOI: 10.1039/c3ra40387d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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21
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Li D, Ding JX, Tang ZH, Sun H, Zhuang XL, Xu JZ, Chen XS. In vitro evaluation of anticancer nanomedicines based on doxorubicin and amphiphilic Y-shaped copolymers. Int J Nanomedicine 2012; 7:2687-97. [PMID: 22701317 PMCID: PMC3373295 DOI: 10.2147/ijn.s30687] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Four monomethoxy poly(ethylene glycol)-poly(L-lactide-co-glycolide)2 (mPEG-P( LA-co-GA)2) copolymers were synthesized by ring-opening polymerization of L-lactide and glycolide with double hydroxyl functionalized mPEG (mPEG-(OH)2) as macroinitiator and stannous octoate as catalyst. The copolymers self-assembled into nanoscale micellar/vesicular aggregations in phosphate buffer at pH 7.4. Doxorubicin (DOX), an anthracycline anticancer drug, was loaded into the micellar/vesicular nanoparticles, yielding micellar/vesicular nanomedicines. The in vitro release behaviors could be adjusted by content of hydrophobic polyester and pH of the release medium. In vitro cell experiments showed that the intracellular DOX release could be adjusted by content of P(LA-co-GA), and the nanomedicines displayed effective proliferation inhibition against Henrietta Lacks’s cells with different culture times. Hemolysis tests indicated that the copolymers were hemocompatible, and the presence of copolymers could reduce the hemolysis ratio of DOX significantly. These results suggested that the novel anticancer nanomedicines based on DOX and amphiphilic Y-shaped copolymers were attractive candidates as tumor tissular and intracellular targeting drug delivery systems in vivo, with enhanced stability during circulation and accelerated drug release at the target sites.
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Affiliation(s)
- Di Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
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22
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Luo N, Lv Y, Wang D, Zhang J, Wu J, He J, Zhang J. Direct visualization of solution morphology of cellulose in ionic liquids by conventional TEM at room temperature. Chem Commun (Camb) 2012; 48:6283-5. [DOI: 10.1039/c2cc31483e] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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