1
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Haque F, Thompson SW, Ishizuka F, Kuchel RP, Singh D, Sanjayan GJ, Zetterlund PB. Block Copolymer Self-assembly: Exploitation of Hydrogen Bonding for Nanoparticle Morphology Control via Incorporation of Triazine Based Comonomers by RAFT Polymerization. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401129. [PMID: 38837298 DOI: 10.1002/smll.202401129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 05/15/2024] [Indexed: 06/07/2024]
Abstract
Synthesis of polymeric nanoparticles of controlled non-spherical morphology is of profound interest for a wide variety of potential applications. Self-assembly of amphiphilic diblock copolymers is an attractive bottom-up approach to prepare such nanoparticles. In the present work, RAFT polymerization is employed to synthesize a variety of poly(N,N-dimethylacrylamide)-b-poly[butyl acrylate-stat-GCB] copolymers, where GCB represents vinyl monomer containing triazine based Janus guanine-cytosine nucleobase motifs featuring multiple hydrogen bonding arrays. Hydrogen bonding between the hydrophobic blocks exert significant influence on the morphology of the resulting nanoparticles self-assembled in water. The Janus feature of the GCB moieties makes it possible to use a single polymer type in self-assembly, unlike previous work exploiting, e.g., thymine-containing polymer and adenine-containing polymer. Moreover, the strength of the hydrogen bonding interactions enables use of a low molar fraction of GCB units, thereby rendering it possible to use the present approach for copolymers based on common vinyl monomers for the development of advanced nanomaterials.
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Affiliation(s)
- Farah Haque
- Cluster for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Steven W Thompson
- Cluster for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Fumi Ishizuka
- Cluster for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Rhiannon P Kuchel
- Electron Microscope Unit, Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Dharmendra Singh
- Organic Chemistry Division, Council of Scientific and Industrial Research, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific, Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Gangadhar J Sanjayan
- Organic Chemistry Division, Council of Scientific and Industrial Research, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific, Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Per B Zetterlund
- Cluster for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
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2
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Du R, Fielding LA. pH-Responsive Nanogels Generated by Polymerization-Induced Self-Assembly of a Succinate-Functional Monomer. Macromolecules 2024; 57:3496-3501. [PMID: 38681060 PMCID: PMC11044572 DOI: 10.1021/acs.macromol.4c00427] [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: 02/22/2024] [Revised: 03/22/2024] [Accepted: 03/26/2024] [Indexed: 05/01/2024]
Abstract
Colloidal nanogels formed from a pH-responsive poly(succinate)-functional core and a poly(sulfonate)-functional corona were prepared via a previously unreported reversible addition-fragmentation chain-transfer (RAFT)-mediated aqueous emulsion polymerization-induced self-assembly (PISA) route. Specifically, a poly(potassium 3-sulfopropyl methacrylate) (PKSPMA50) macromolecular chain-transfer agent (macro-CTA) was synthesized via RAFT solution polymerization followed by chain-extension with a hydrophobic, carboxylic acid-functional, 2-(methacryloyloxy) ethyl succinate (MES) monomer at pH 2. Colloidal nanoparticles with tunable diameters between 66 to 150 nm, depending on the core composition, and narrow particle size distributions were obtained at 20% w/w solids. Well-defined pH-responsive nanogels that swell on increasing the pH could be prepared even without the addition of a cross-linking comonomer, and introducing an additional cross-linker to the core led to smaller nanogels with lower swelling ratios. These nanogels could reversibly change in size on cycling the pH between acidic and basic conditions and remain colloidally stable over a wide pH range and at 70 °C.
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Affiliation(s)
- Ruiling Du
- Department
of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- Henry
Royce Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Lee A. Fielding
- Department
of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- Henry
Royce Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
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3
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Ianiro A, Berrocal JA, Tuinier R, Mayer M, Weder C. Computational design of anisotropic nanocomposite actuators. J Chem Phys 2023; 158:014901. [PMID: 36610969 DOI: 10.1063/5.0129105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
This paper presents a theoretical investigation of the design of a new actuator type made of anisotropic colloidal particles grafted with stimuli-responsive polymer chains. These artificial muscles combine the osmotic actuation principle of stimuli-responsive hydrogels with the structural alignment of colloidal liquid crystals to achieve directional motion. The solubility of the stimuli-responsive polymer in the neutral state, its degree of polymerization, the salt concentration, and the grafting density of the polymer chains on the surface of the colloidal particles are investigated and identified as important for actuator performance and tunability. The computational results suggest that the proposed mechanically active material matches or exceeds the performances of natural muscles and provide the guidelines for the realization of artificial muscles with predetermined actuation properties.
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Affiliation(s)
- Alessandro Ianiro
- Biophysics Group, Adolphe Merkle Institute, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - José Augusto Berrocal
- Polymer Chemistry and Materials Group, Adolphe Merkle Institute, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Remco Tuinier
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Michael Mayer
- Biophysics Group, Adolphe Merkle Institute, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Christoph Weder
- Polymer Chemistry and Materials Group, Adolphe Merkle Institute, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
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4
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Ikkene D, Six JL, Ferji K. Progress in Aqueous Dispersion RAFT PISA. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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5
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Ch S, Paul M, Ghosh B, Biswas S. Rebuttal, Replying to the "Letter to the Editor" entitled "Questionable micelle formation of the double hydrophilic block copolymer PEG-pHPMA". Int J Pharm 2022; 626:122148. [PMID: 36130860 DOI: 10.1016/j.ijpharm.2022.122148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Sanjay Ch
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Telangana 500078, India
| | - Milan Paul
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Telangana 500078, India
| | - Balaram Ghosh
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Telangana 500078, India.
| | - Swati Biswas
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Telangana 500078, India.
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6
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Neal TJ, Penfold NJW, Armes SP. Reverse Sequence Polymerization‐Induced Self‐Assembly in Aqueous Media. Angew Chem Int Ed Engl 2022; 61:e202207376. [PMID: 35678548 PMCID: PMC9541501 DOI: 10.1002/anie.202207376] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Indexed: 11/06/2022]
Abstract
We report a new aqueous polymerization‐induced self‐assembly (PISA) formulation that enables the hydrophobic block to be prepared first when targeting diblock copolymer nano‐objects. This counter‐intuitive reverse sequence approach uses an ionic reversible addition–fragmentation chain transfer (RAFT) agent for the RAFT aqueous dispersion polymerization of 2‐hydroxypropyl methacrylate (HPMA) to produce charge‐stabilized latex particles. Chain extension using a water‐soluble methacrylic, acrylic or acrylamide comonomer then produces sterically stabilized diblock copolymer nanoparticles in an aqueous one‐pot formulation. In each case, the monomer diffuses into the PHPMA particles, which act as the locus for the polymerization. A remarkable change in morphology occurs as the ≈600 nm latex is converted into much smaller sterically stabilized diblock copolymer nanoparticles, which exhibit thermoresponsive behavior. Such reverse sequence PISA formulations enable the efficient synthesis of new functional diblock copolymer nanoparticles.
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Affiliation(s)
- Thomas J. Neal
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| | - Nicholas J. W. Penfold
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| | - Steven P. Armes
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
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7
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Neal TJ, Penfold NJW, Armes SP. Reverse Sequence Polymerization‐Induced Self‐Assembly in Aqueous Media. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Thomas J. Neal
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| | - Nicholas J. W. Penfold
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
| | - Steven P. Armes
- Department or Chemistry The University of Sheffield Brook Hill, Sheffield, South Yorkshire S3 7HF UK
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8
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Buglakov AI, Vasilevskaya VV. Fibrillar gel self-assembly via cononsolvency of amphiphilic polymer. J Colloid Interface Sci 2022; 614:181-193. [DOI: 10.1016/j.jcis.2022.01.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 01/14/2022] [Accepted: 01/16/2022] [Indexed: 11/25/2022]
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9
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Parkatzidis K, Truong NP, Rolland M, Lutz-Bueno V, Pilkington EH, Mezzenga R, Anastasaki A. Transformer-Induced Metamorphosis of Polymeric Nanoparticle Shape at Room Temperature. Angew Chem Int Ed Engl 2022; 61:e202113424. [PMID: 35014134 PMCID: PMC9303452 DOI: 10.1002/anie.202113424] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Indexed: 11/30/2022]
Abstract
Controlled polymerizations have enabled the production of nanostructured materials with different shapes, each exhibiting distinct properties. Despite the importance of shape, current morphological transformation strategies are limited in polymer scope, alter the chemical structure, require high temperatures, and are fairly tedious. Herein we present a rapid and versatile morphological transformation strategy that operates at room temperature and does not impair the chemical structure of the constituent polymers. By simply adding a molecular transformer to an aqueous dispersion of polymeric nanoparticles, a rapid evolution to the next higher‐order morphology was observed, yielding a range of morphologies from a single starting material. Significantly, this approach can be applied to nanoparticles produced by disparate block copolymers obtained by various synthetic techniques including emulsion polymerization, polymerization‐induced self‐assembly and traditional solution self‐assembly.
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Affiliation(s)
- Kostas Parkatzidis
- Laboratory of Polymeric Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich, 8093, Switzerland
| | - Nghia P Truong
- Laboratory of Polymeric Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich, 8093, Switzerland.,Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Manon Rolland
- Laboratory of Polymeric Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich, 8093, Switzerland
| | - Viviane Lutz-Bueno
- Department of Health Sciences and Technology, ETH Zurich, Zurich, 8092, Switzerland
| | - Emily H Pilkington
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Raffaele Mezzenga
- Laboratory of Polymeric Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich, 8093, Switzerland.,Department of Health Sciences and Technology, ETH Zurich, Zurich, 8092, Switzerland
| | - Athina Anastasaki
- Laboratory of Polymeric Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich, 8093, Switzerland
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10
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Parkatzidis K, Truong NP, Rolland M, Lutz‐Bueno V, Pilkington EH, Mezzenga R, Anastasaki A. Transformer‐Induced Metamorphosis of Polymeric Nanoparticle Shape at Room Temperature. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kostas Parkatzidis
- Laboratory of Polymeric Materials Department of Materials ETH Zurich Vladimir-Prelog-Weg 5 Zurich 8093 Switzerland
| | - Nghia P. Truong
- Laboratory of Polymeric Materials Department of Materials ETH Zurich Vladimir-Prelog-Weg 5 Zurich 8093 Switzerland
- Monash Institute of Pharmaceutical Sciences Monash University Parkville Victoria 3052 Australia
| | - Manon Rolland
- Laboratory of Polymeric Materials Department of Materials ETH Zurich Vladimir-Prelog-Weg 5 Zurich 8093 Switzerland
| | - Viviane Lutz‐Bueno
- Department of Health Sciences and Technology ETH Zurich Zurich 8092 Switzerland
| | - Emily H. Pilkington
- Monash Institute of Pharmaceutical Sciences Monash University Parkville Victoria 3052 Australia
| | - Raffaele Mezzenga
- Laboratory of Polymeric Materials Department of Materials ETH Zurich Vladimir-Prelog-Weg 5 Zurich 8093 Switzerland
- Department of Health Sciences and Technology ETH Zurich Zurich 8092 Switzerland
| | - Athina Anastasaki
- Laboratory of Polymeric Materials Department of Materials ETH Zurich Vladimir-Prelog-Weg 5 Zurich 8093 Switzerland
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11
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Tenhu H, Baddam V, Välinen L, Kuckling L. Morphological transitions of cationic PISA particles by salt, triflate ions and temperature; comparison of three polycations. Polym Chem 2022. [DOI: 10.1039/d2py00301e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three strong polycation stabilizers, poly((vinylbenzyl) trimethylammonium chloride), PVBTMAC, poly((2-(methacryloyloxy)ethyl)trimethylammonium chloride), PMOTAC, and poly((3-acrylamidopropyl) trimethylammonium chloride), PAMPTMAC have been synthesized with reversible addition-fragmentation chain transfer, RAFT, reactions. Solubilities of the polycations...
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12
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Penfold NJW, Neal TJ, Plait C, Leigh AE, Chimonides G, Smallridge MJ, Armes SP. Reverse sequence polymerization-induced self-assembly in aqueous media: a counter-intuitive approach to sterically-stabilized diblock copolymer nano-objects. Polym Chem 2022. [DOI: 10.1039/d2py01064j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A 500 nm charge-stabilized latex is converted into 40 nm sterically-stabilized nanoparticles via reverse sequence polymerization-induced self-assembly (PISA).
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Affiliation(s)
- Nicholas J. W. Penfold
- Dainton Building, Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK
| | - Thomas J. Neal
- Dainton Building, Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK
| | - Corentin Plait
- Dainton Building, Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK
| | - Andrew E. Leigh
- Dainton Building, Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK
| | - Gwen Chimonides
- Dainton Building, Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK
| | | | - Steven P. Armes
- Dainton Building, Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK
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13
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Czajka A, Byard SJ, Armes SP. Silica nanoparticle-loaded thermoresponsive block copolymer vesicles: a new post-polymerization encapsulation strategy and thermally triggered release. Chem Sci 2022; 13:9569-9579. [PMID: 36091885 PMCID: PMC9400661 DOI: 10.1039/d2sc02103j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 07/12/2022] [Indexed: 11/21/2022] Open
Abstract
A thermoresponsive amphiphilic diblock copolymer that can form spheres, worms or vesicles in aqueous media at neutral pH by simply raising the dispersion temperature from 1 °C (spheres) to 25 °C (worms) to 50 °C (vesicles) is prepared via polymerization-induced self-assembly (PISA). Heating such an aqueous copolymer dispersion from 1 °C up to 50 °C in the presence of 19 nm glycerol-functionalized silica nanoparticles enables this remarkable ‘shape-shifting’ behavior to be exploited as a new post-polymerization encapsulation strategy. The silica-loaded vesicles formed at 50 °C are then crosslinked using a disulfide-based dihydrazide reagent. Such covalent stabilization enables the dispersion to be cooled to room temperature without loss of the vesicle morphology, thus aiding characterization and enabling the loading efficiency to be determined as a function of both copolymer and silica concentration. Small-angle X-ray scattering (SAXS) analysis indicated a mean vesicle membrane thickness of approximately 20 ± 2 nm for the linear vesicles and TEM studies confirmed encapsulation of the silica nanoparticles within these nano-objects. After removal of the non-encapsulated silica nanoparticles via multiple centrifugation–redispersion cycles, thermogravimetric analysis indicated that vesicle loading efficiencies of up to 86% can be achieved under optimized conditions. Thermally-triggered release of the silica nanoparticles is achieved by cleaving the disulfide bonds at 50 °C using tris(2-carboxyethyl)phosphine (TCEP), followed by cooling to 20 °C to induce vesicle dissociation. SAXS is also used to confirm the release of silica nanoparticles by monitoring the disappearance of the structure factor peak arising from silica–silica interactions. A loading efficiency of up to 86% is achieved for silica nanoparticles encapsulated within crosslinkable redox-sensitive thermoresponsive diblock copolymer vesicles in water at 50 °C; triggered release is also demonstrated for this system.![]()
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Affiliation(s)
- Adam Czajka
- Dainton Building, The University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK
| | - Sarah J. Byard
- Dainton Building, The University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK
| | - Steven P. Armes
- Dainton Building, The University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK
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14
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Rymaruk MJ, O'Brien CT, György C, Darmau B, Jennings J, Mykhaylyk OO, Armes SP. Small-Angle X-Ray Scattering Studies of Block Copolymer Nano-Objects: Formation of Ordered Phases in Concentrated Solution During Polymerization-Induced Self-Assembly. Angew Chem Int Ed Engl 2021; 60:12955-12963. [PMID: 33725372 PMCID: PMC8252599 DOI: 10.1002/anie.202101851] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/12/2021] [Indexed: 01/13/2023]
Abstract
We report that polymerization-induced self-assembly (PISA) can be used to prepare lyotropic phases comprising diblock copolymer nano-objects in non-polar media. RAFT dispersion polymerization of benzyl methacrylate (BzMA) at 90 °C using a trithiocarbonate-capped hydrogenated polybutadiene (PhBD) steric stabilizer block in n-dodecane produces either spheres or worms that exhibit long-range order at 40 % w/w solids. NMR studies enable calculation of instantaneous copolymer compositions for each phase during the BzMA polymerization. As the PBzMA chains grow longer when targeting PhBD80 -PBzMA40 , time-resolved small-angle X-ray scattering reveals intermediate body-centered cubic (BCC) and hexagonally close-packed (HCP) sphere phases prior to formation of a final hexagonal cylinder phase (HEX). The HEX phase is lost on serial dilution and the aligned cylinders eventually form disordered flexible worms. The HEX phase undergoes an order-disorder transition on heating to 150 °C and a pure HCP phase forms on cooling to 20 °C.
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Affiliation(s)
- Matthew J. Rymaruk
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
- Present address: SyngentaJealott's HillBracknellBerkshireRG42 6EYUK
| | - Cate T. O'Brien
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Csilla György
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Bastien Darmau
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - James Jennings
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | | | - Steven P. Armes
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
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15
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Rymaruk MJ, O'Brien CT, György C, Darmau B, Jennings J, Mykhaylyk OO, Armes SP. Small‐Angle X‐Ray Scattering Studies of Block Copolymer Nano‐Objects: Formation of Ordered Phases in Concentrated Solution During Polymerization‐Induced Self‐Assembly. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Matthew J. Rymaruk
- Dainton Building Department of Chemistry The University of Sheffield Sheffield S3 7HF UK
- Present address: Syngenta Jealott's Hill Bracknell Berkshire RG42 6EY UK
| | - Cate T. O'Brien
- Dainton Building Department of Chemistry The University of Sheffield Sheffield S3 7HF UK
| | - Csilla György
- Dainton Building Department of Chemistry The University of Sheffield Sheffield S3 7HF UK
| | - Bastien Darmau
- Dainton Building Department of Chemistry The University of Sheffield Sheffield S3 7HF UK
| | - James Jennings
- Dainton Building Department of Chemistry The University of Sheffield Sheffield S3 7HF UK
| | - Oleksandr O. Mykhaylyk
- Dainton Building Department of Chemistry The University of Sheffield Sheffield S3 7HF UK
| | - Steven P. Armes
- Dainton Building Department of Chemistry The University of Sheffield Sheffield S3 7HF UK
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16
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Ridolfo R, Arends JJ, van Hest JCM, Williams DS. Wormlike Nanovector with Enhanced Drug Loading Using Blends of Biodegradable Block Copolymers. Biomacromolecules 2020; 21:2199-2207. [PMID: 32208660 DOI: 10.1021/acs.biomac.0c00169] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The application of nanoparticles comprising amphiphilic block copolymers for the delivery of drugs is a subject of great interest as they hold promise for more effective and selective therapies. In order to achieve this ambition, it is of critical importance to develop our understanding of the self-assembly mechanisms by which block copolymers undergo so that we can control their morphology, tune their ability to be loaded with biofunctional cargoes, and optimize their interactions with target cells. To this end, we have developed a strategy by which blends of (biocompatible) amphiphilic block copolymers generate nonspherical nanovectors, simultaneously enhancing drug loading without the need for subsequent purification owing to the use of the biocompatible direct hydration approach. The principal morphology achieved using this blending strategy are wormlike nanovectors (nanoworms, NWs), with an elongated form known to have a profound effect on flow behavior and interactions with cells. Unloaded nanoworms are not toxic toward human retinal (ARPE-19) cells and can be effectively endocytosed even after varying the surface charge. In terms of drug loading, we demonstrate that uptake of dexamethasone (DEX; a clinically relevant therapeutic agent) in nanoworms (DEX@NWs) can be enhanced using this process, increasing drug content up to 0.5 mg/mL (10 wt % in particles). Furthermore, such nanoworms are stable for at least 5 months and are, therefore, a promising platform for nanomedicine applications.
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Affiliation(s)
- Roxane Ridolfo
- Bio-Organic Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513 (STO 3.41), 5600 MB Eindhoven, The Netherlands
| | - Jeanrick J Arends
- Bio-Organic Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513 (STO 3.41), 5600 MB Eindhoven, The Netherlands
| | - Jan C M van Hest
- Bio-Organic Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513 (STO 3.41), 5600 MB Eindhoven, The Netherlands
| | - David S Williams
- Department of Chemistry, College of Science, Swansea University, Swansea, United Kingdom
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17
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Cheng X, Miao T, Yin L, Ji Y, Li Y, Zhang Z, Zhang W, Zhu X. In Situ Controlled Construction of a Hierarchical Supramolecular Chiral Liquid‐Crystalline Polymer Assembly. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001657] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xiaoxiao Cheng
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsJiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Tengfei Miao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsJiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Lu Yin
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsJiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Yujin Ji
- Institute of Functional Nano & Soft Materials (FUNSOM)Soochow University Suzhou 215123 China
| | - Youyong Li
- Institute of Functional Nano & Soft Materials (FUNSOM)Soochow University Suzhou 215123 China
| | - Zhengbiao Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsJiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Wei Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsJiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Xiulin Zhu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsJiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
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Cheng X, Miao T, Yin L, Ji Y, Li Y, Zhang Z, Zhang W, Zhu X. In Situ Controlled Construction of a Hierarchical Supramolecular Chiral Liquid-Crystalline Polymer Assembly. Angew Chem Int Ed Engl 2020; 59:9669-9677. [PMID: 32181944 DOI: 10.1002/anie.202001657] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/25/2020] [Indexed: 11/09/2022]
Abstract
Hierarchical supramolecular chiral liquid-crystalline (LC) polymer assemblies are challenging to construct in situ in a controlled manner. Now, polymerization-induced chiral self-assembly (PICSA) is reported. Hierarchical supramolecular chiral azobenzene-containing block copolymer (Azo-BCP) assemblies were constructed with π-π stacking interactions occurring in the layered structure of Azo smectic phases. The evolution of chirality from terminal alkyl chain to Azo mesogen building blocks and further induction of supramolecular chirality in LC BCP assemblies during PICSA is achieved. Morphologies such as spheres, worms, helical fibers, lamellae, and vesicles were observed. The morphological transition had a crucial effect on the chiral expression of Azo-BCP assemblies. The supramolecular chirality of Azo-BCP assemblies destroyed by 365 nm UV irradiation can be recovered by heating-cooling treatment; this dynamic reversible achiral-chiral switching can be repeated at least five times.
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Affiliation(s)
- Xiaoxiao Cheng
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Tengfei Miao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Lu Yin
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Yujin Ji
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China
| | - Youyong Li
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China
| | - Zhengbiao Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Wei Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Xiulin Zhu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
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