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Poursadegh H, Bakhshi V, Amini-Fazl MS, Adibag Z, Kazeminava F, Javanbakht S. Incorporating mannose-functionalized hydroxyapatite/metal-organic framework into the hyaluronic acid hydrogel film: A potential dual-targeted oral anticancer delivery system. Int J Biol Macromol 2024; 274:133516. [PMID: 38944078 DOI: 10.1016/j.ijbiomac.2024.133516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/01/2024]
Abstract
The recent challenge in enhancing the targeted delivery of anticancer drugs to cancer cells is improving the bioavailability and therapeutic efficacy of drug delivery systems while minimizing their systemic side effects. In this study, the MIL-88(Fe) metal-organic framework was synthesized using the in situ method in the presence of hydroxyapatite nanoparticles (HAP) toward the HAP/MIL-88(Fe) (HM) nanocomposite preparation. It was then functionalized with mannose (M) as an anticancer receptor through the Steglich esterification method. Various analyses confirmed the successful synthesis of MHM. For drug release investigation, 5-Fu was loaded into the MHM, which was then coated with a hyaluronic acid (HA) hydrogel film. Characterization analyses verified the structure of the resulting HA/5-Fu-MHM hydrogel film. In vitro drug release experiments showed that the release of 5-Fu drug from HA/5-Fu-MHM could be controlled with pH, reducing its release rate in the acidic environment of the stomach while increasing it in the intestinal environment. Cytotoxicity results of the HA/5-Fu-MHM hydrogel film against HT29 cancer cells showed enhanced cytotoxicity due to the mannose and hyaluronic acid in its structure, which triggers a dual-targeted drug delivery system. The obtained results indicate that the prepared hydrogel films can be a promising bio-platform for colon cancer treatment.
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Affiliation(s)
- Hossein Poursadegh
- Advanced Polymer Material Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
| | - Vahid Bakhshi
- Advanced Polymer Material Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Mohammad Sadegh Amini-Fazl
- Advanced Polymer Material Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
| | - Zahra Adibag
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fahimeh Kazeminava
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Siamak Javanbakht
- Advanced Polymer Material Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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Shape-Shifting Thermoresponsive Block Copolymer Nano-Objects. J Colloid Interface Sci 2023; 634:906-920. [PMID: 36566636 DOI: 10.1016/j.jcis.2022.12.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
In this Feature Article, we review our recent progress in the design of shape-shifting thermoresponsive diblock copolymer nano-objects, which are prepared using various hydroxyl-functional (meth)acrylic monomers (e.g. 2‑hydroxypropyl methacrylate, 4‑hydroxybutyl acrylate or hydroxybutyl methacrylate) to generate the thermoresponsive block. Unlike traditional thermoresponsive polymers such as poly(N-isopropylacrylamide), there is no transition between soluble and insoluble polymer chains in aqueous solution. Instead, thermally driven transitions between a series of copolymer morphologies (e.g. spheres, worms, vesicles or lamellae) occur on adjusting the aqueous solution temperature owing to a subtle change in the partial degree of hydration of the permanently insoluble thermoresponsive block. Such remarkable self-assembly behavior is unprecedented in colloid science: no other amphiphilic diblock copolymer or surfactant system undergoes such behavior at a fixed chemical composition and concentration. Such shape-shifting nano-objects are characterized by transmission electron microscopy, dynamic light scattering, small-angle X-ray scattering, rheology and variable temperature 1H NMR spectroscopy. Potential applications for this fascinating new class of amphiphiles are briefly considered.
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Gao Y, Xiang Z, Zhao X, Wang G, Qi C. Pickering Emulsions Stabilized by Diblock Copolymer Worms Prepared via Reversible Addition-Fragmentation Chain Transfer Aqueous Dispersion Polymerization: How Does the Stimulus Sensitivity Affect the Rate of Demulsification? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11695-11706. [PMID: 34579524 DOI: 10.1021/acs.langmuir.1c01609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Responsive Pickering emulsions exhibit promising application in industry owing to the integration of the high storage stability with on-demand demulsification. In this study, stimuli-responsive Pickering emulsions stabilized by poly[oligo(ethylene glycol) methyl ether methacrylate]15-b-poly(diacetone acrylamide)120 (E15D120) worms were indicated, in which E15D120 worms were prepared via reversible addition-fragmentation chain transfer-based aqueous dispersion polymerization using thermo-sensitive POEGMA15 as both the stabilizer block and macro-chain transfer agent. The factors influencing the morphologies of copolymers during polymerization-induced self assembly have been investigated. A series of different morphological polymer nanoparticles including spheres, worms, and vesicles could be produced through rational synthesis. E15D120 worms demonstrated excellent emulsifying performances and could be used as emulsifiers to form n-dodecane-in-water Pickering emulsions at a low content. The formed n-dodecane-in-water Pickering emulsions revealed a slow demulsification at pH 10 or 70 °C or pH 10/70 °C combinations, and several hours were needed for the demulsification of Pickering emulsions. However, n-dodecane-in-water Pickering emulsions displayed a rapid demulsification (∼10 min) at an elevated temperature, such as 90 °C. The different demulsification rates were attributed to different sensitivities of E15D120 worms to external stimuli. Pickering emulsions integrating a rapid responsive demulsification with a slow one would be well satisfactory on different occasions.
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Affiliation(s)
- Yong Gao
- Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, China
- College of Chemistry and Key Lab of Environment-Friendly Chemistry and Application in Ministry of Education; Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Xiangtan University, Xiangtan, Hunan Province 411105, China
| | - Zhe Xiang
- College of Chemistry and Key Lab of Environment-Friendly Chemistry and Application in Ministry of Education; Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Xiangtan University, Xiangtan, Hunan Province 411105, China
| | - Xi Zhao
- Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, China
- College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan Province 414006, China
| | - Guoxiang Wang
- College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan Province 414006, China
| | - Chenze Qi
- Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, China
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Self-Organization in Dilute Aqueous Solutions of Thermoresponsive Star-Shaped Six-Arm Poly-2-Alkyl-2-Oxazines and Poly-2-Alkyl-2-Oxazolines. Polymers (Basel) 2021; 13:polym13091429. [PMID: 33946655 PMCID: PMC8125547 DOI: 10.3390/polym13091429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/16/2021] [Accepted: 04/26/2021] [Indexed: 11/24/2022] Open
Abstract
The behavior of star-shaped six-arm poly-2-alkyl-2-oxazines and poly-2-alkyl-2-oxazolines in aqueous solutions on heating was studied by light scattering, turbidimetry and microcalorimetry. The core of stars was hexaaza [26] orthoparacyclophane and the arms were poly-2-ethyl-2-oxazine, poly-2-isopropyl-2-oxazine, poly-2-ethyl-2-oxazoline, and poly-2-isopropyl-2-oxazoline. The arm structure affects the properties of polymers already at low temperatures. Molecules and aggregates were present in solutions of poly-2-alkyl-2-oxazines, while aggregates of two types were observed in the case of poly-2-alkyl-2-oxazolines. On heating below the phase separation temperature, the characteristics of the investigated solutions did not depend practically on temperature. An increase in the dehydration degree of poly-2-alkyl-2-oxazines and poly-2-alkyl-2-oxazolines led to the formation of intermolecular hydrogen bonds, and aggregation was the dominant process near the phase separation temperature. It was shown that the characteristics of the phase transition in solutions of the studied polymer stars are determined primarily by the arm structure, while the influence of the molar mass is not so significant. In comparison with literature data, the role of the hydrophobic core structure in the formation of the properties of star-shaped polymers was analyzed.
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Zanata DDM, Felisberti MI. Self-assembly of dual-responsive amphiphilic POEGMA- b-P4VP- b-POEGMA triblock copolymers: effect of temperature, pH, and complexation with Cu 2+. Polym Chem 2021. [DOI: 10.1039/d1py00716e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amphiphilic and dual-responsive triblock copolymer POEGMA-b-P4VP-b-POEGMA synthesized by RAFT self-assemble into spherical or interconnected micelles depending on the external stimulus and their complexation with Cu2+ results in responsive nanogels.
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Affiliation(s)
- Daniela de Morais Zanata
- Institute of Chemistry, University of Campinas (UNICAMP), P. O. Box 6154, Campinas, SP 13083-970, Brazil
| | - Maria Isabel Felisberti
- Institute of Chemistry, University of Campinas (UNICAMP), P. O. Box 6154, Campinas, SP 13083-970, Brazil
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Hunter SJ, Cornel EJ, Mykhaylyk OO, Armes SP. Effect of Salt on the Formation and Stability of Water-in-Oil Pickering Nanoemulsions Stabilized by Diblock Copolymer Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:15523-15535. [PMID: 33332972 PMCID: PMC7884014 DOI: 10.1021/acs.langmuir.0c02742] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Sterically stabilized diblock copolymer nanoparticles are prepared in n-dodecane using polymerization-induced self-assembly. Precursor Pickering macroemulsions are then prepared by the addition of water followed by high-shear homogenization. In the absence of any salt, high-pressure microfluidization of such precursor emulsions leads to the formation of relatively large aqueous droplets with DLS measurements indicating a mean diameter of more than 600 nm. However, systemically increasing the salt concentration produces significantly finer droplets after microfluidization, until a limiting diameter of around 250 nm is obtained at 0.11 M NaCl. The mean size of these aqueous droplets can also be tuned by systematically varying the nanoparticle concentration, applied pressure, and the number of passes through the microfluidizer. The mean number of nanoparticles adsorbed onto each aqueous droplet and their packing efficiency are calculated. SAXS studies conducted on a Pickering nanoemulsion prepared using 0.11 M NaCl confirms that the aqueous droplets are coated with a loosely packed monolayer of nanoparticles. The effect of varying the NaCl concentration within the droplets on their initial rate of Ostwald ripening is investigated using DLS. Finally, the long-term stability of these water-in-oil Pickering nanoemulsions is assessed using analytical centrifugation. The rate of droplet ripening can be substantially reduced by using 0.11 M NaCl instead of pure water. However, increasing the salt concentration up to 0.43 M provided no further improvement in the long-term stability of such nanoemulsions.
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Rodchenko S, Amirova A, Kurlykin M, Tenkovtsev A, Milenin S, Filippov A. Amphiphilic Molecular Brushes with Regular Polydimethylsiloxane Backbone and Poly-2-isopropyl-2-oxazoline Side Chains. 2. Self-Organization in Aqueous Solutions on Heating. Polymers (Basel) 2020; 13:E31. [PMID: 33374766 PMCID: PMC7796000 DOI: 10.3390/polym13010031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/18/2020] [Accepted: 12/20/2020] [Indexed: 01/18/2023] Open
Abstract
The behavior of amphiphilic molecular brushes in aqueous solutions on heating was studied by light scattering and turbidimetry. The main chain of the graft copolymers was polydimethylsiloxane, and the side chains were thermosensitive poly-2-isopropyl-2-oxazoline. The studied samples differed in the length of the grafted chains (polymerization degrees were 14 and 30) and, accordingly, in the molar fraction of the hydrophobic backbone. The grafting density of both samples was 0.6. At low temperatures, macromolecules and aggregates, which formed due to the interaction of main chains, were observed in solutions. At moderate temperatures, heating solutions of the sample with short side chains led to aggregation due to dehydration of poly-2-isopropyl-2-oxazoline and the formation of intermolecular hydrogen bonds. In the case of the brush with long grafted chains, dehydration caused the formation of intramolecular hydrogen bonds and the compaction of molecules and aggregates. The lower critical solution temperature for solutions of the sample with long side chains was higher than LCST for the sample with short side chains. It was shown that the molar fraction of the hydrophobic component and the intramolecular density are the important factors determining the LCST behavior of amphiphilic molecular brushes in aqueous solutions.
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Affiliation(s)
- Serafim Rodchenko
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Alina Amirova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Mikhail Kurlykin
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Andrey Tenkovtsev
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Sergey Milenin
- Enikolopov Institute of Synthetic Polymeric Materials of the Russian Academy of Sciences, Profsoyuznaya, 70, 117393 Moscow, Russia;
| | - Alexander Filippov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
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8
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Preparation and properties of thermo- and pH-responsive polypeptide bearing OEG and aldehyde pendants. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04712-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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9
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Penfold NJW, Yeow J, Boyer C, Armes SP. Emerging Trends in Polymerization-Induced Self-Assembly. ACS Macro Lett 2019; 8:1029-1054. [PMID: 35619484 DOI: 10.1021/acsmacrolett.9b00464] [Citation(s) in RCA: 344] [Impact Index Per Article: 68.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In this Perspective, we summarize recent progress in polymerization-induced self-assembly (PISA) for the rational synthesis of block copolymer nanoparticles with various morphologies. Much of the PISA literature has been based on thermally initiated reversible addition-fragmentation chain transfer (RAFT) polymerization. Herein, we pay particular attention to alternative PISA protocols, which allow the preparation of nanoparticles with improved control over copolymer morphology and functionality. For example, initiation based on visible light, redox chemistry, or enzymes enables the incorporation of sensitive monomers and fragile biomolecules into block copolymer nanoparticles. Furthermore, PISA syntheses and postfunctionalization of the resulting nanoparticles (e.g., cross-linking) can be conducted sequentially without intermediate purification by using various external stimuli. Finally, PISA formulations have been optimized via high-throughput polymerization and recently evaluated within flow reactors for facile scale-up syntheses.
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Affiliation(s)
- Nicholas J. W. Penfold
- Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
| | - Jonathan Yeow
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, and Australian Centre for NanoMedicine, School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales, 2051, Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, and Australian Centre for NanoMedicine, School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales, 2051, Australia
| | - Steven P. Armes
- Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
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10
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OEGylated polypeptide bearing Y-Shaped pendants with a LCST close to body temperature: Synthesis and thermoresponsive properties. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.10.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Busatto N, Stolojan V, Shaw M, Keddie JL, Roth PJ. Reactive Polymorphic Nanoparticles: Preparation via Polymerization-Induced Self-Assembly and Postsynthesis Thiol-para
-Fluoro Core Modification. Macromol Rapid Commun 2018; 40:e1800346. [DOI: 10.1002/marc.201800346] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/08/2018] [Indexed: 01/20/2023]
Affiliation(s)
- Nicolas Busatto
- Department of Chemistry; University of Surrey; Guildford Surrey GU2 7XH UK
| | - Vlad Stolojan
- Advanced Technology Institute; University of Surrey; Guildford Surrey GU2 7XH UK
| | - Michael Shaw
- National Physical Laboratory; Hampton Road; Teddington Middlesex TW11 0LW UK
- Department of Computer Science; University College London; London WC1 6BT UK
| | - Joseph L. Keddie
- Department of Physics; University of Surrey; Guildford Surrey GU2 7XH UK
| | - Peter J. Roth
- Department of Chemistry; University of Surrey; Guildford Surrey GU2 7XH UK
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Mable CJ, Fielding LA, Derry MJ, Mykhaylyk OO, Chambon P, Armes SP. Synthesis and pH-responsive dissociation of framboidal ABC triblock copolymer vesicles in aqueous solution. Chem Sci 2018; 9:1454-1463. [PMID: 29675191 PMCID: PMC5885938 DOI: 10.1039/c7sc04788f] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 12/12/2017] [Indexed: 11/21/2022] Open
Abstract
A series of pH-responsive all-methacrylic ABC triblock copolymer vesicles were prepared from precursor diblock copolymer vesicles via RAFT seeded emulsion polymerisation. Microphase separation between the two hydrophobic membrane-forming B and C blocks produced a distinctive framboidal morphology, for which the mean globule size can be tuned by adjusting the triblock copolymer composition. These vesicles remain intact at neutral pH, but undergo irreversible dissociation on addition of acid as a result of protonation of the tertiary amine groups located within the third block. Small-angle X-ray scattering (SAXS) was utilised to characterise the morphologies formed at pH 8 and pH 3. According to time-resolved SAXS studies, the acid-induced dissociation of these pH-responsive framboidal vesicles involves appreciable membrane swelling within 50 ms and is complete.
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Affiliation(s)
- C J Mable
- Department of Chemistry , Uni. of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ; Tel: +44 (0)114 222 9342
| | - L A Fielding
- School of Materials , Uni. of Manchester , Oxford Rd , Manchester , M13 9PL , UK
| | - M J Derry
- Department of Chemistry , Uni. of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ; Tel: +44 (0)114 222 9342
| | - O O Mykhaylyk
- Department of Chemistry , Uni. of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ; Tel: +44 (0)114 222 9342
| | - P Chambon
- Department of Chemistry , Uni. of Liverpool , Crown Street , Liverpool , L69 7ZD , UK
| | - S P Armes
- Department of Chemistry , Uni. of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ; Tel: +44 (0)114 222 9342
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14
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Ratcliffe LPD, Bentley KJ, Wehr R, Warren NJ, Saunders BR, Armes SP. Cationic disulfide-functionalized worm gels. Polym Chem 2017; 8:5962-5971. [PMID: 29308095 PMCID: PMC5735358 DOI: 10.1039/c7py01306j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 09/06/2017] [Indexed: 12/15/2022]
Abstract
The recent development of polymerization-induced self-assembly (PISA) has facilitated the rational synthesis of a range of diblock copolymer worms, which hitherto could only be prepared via traditional post-polymerization processing in dilute solution. Herein we explore a new synthetic route to aqueous dispersions of cationic disulfide-functionalized worm gels. This is achieved via the PISA synthesis of poly[(glycerol monomethacrylate-stat-glycidyl methacrylate)]-block-poly(2-hydroxypropyl methacrylate) (P(GMA-stat-GlyMA)-PHPMA) block copolymer worms via reversible addition-fragmentation chain transfer (RAFT) aqueous dispersion polymerization of HPMA. A water-soluble reagent, cystamine, is then reacted with the pendent epoxy groups located within the P(GMA-stat-GlyMA) stabilizer chains to introduce disulfide functionality, while simultaneously conferring cationic character via formation of secondary amine groups. Moreover, systematic variation of the cystamine/epoxy molar ratio enables either chemically cross-linked worm gels or physical (linear) primary amine-functionalized disulfide-based worm gels to be obtained. These new worm gels were characterized using gel permeation chromatography, 1H NMR spectroscopy, transmission electron microscopy, dynamic light scattering, aqueous electrophoresis and rheology. In principle, such hydrogels may offer enhanced mucoadhesive properties.
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Affiliation(s)
- L P D Ratcliffe
- Dainton Building , Department of Chemistry , University of Sheffield , Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ;
| | - K J Bentley
- Dainton Building , Department of Chemistry , University of Sheffield , Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ;
| | - R Wehr
- Dainton Building , Department of Chemistry , University of Sheffield , Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ;
| | - N J Warren
- School of Chemical and Process Engineering , University of Leeds , Leeds , LS2 9JT , UK .
| | - B R Saunders
- School of Materials , The University of Manchester , MSS Tower , Manchester , M13 9PL , UK
| | - S P Armes
- Dainton Building , Department of Chemistry , University of Sheffield , Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ;
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15
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Ding Z, Ding M, Gao C, Boyer C, Zhang W. In Situ Synthesis of Coil–Coil Diblock Copolymer Nanotubes and Tubular Ag/Polymer Nanocomposites by RAFT Dispersion Polymerization in Poly(ethylene glycol). Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01363] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | | | - Cyrille Boyer
- Centre
for Advanced Macromolecular Design, School of Chemical Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
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16
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Deng R, Ning Y, Jones ER, Cunningham VJ, Penfold NJW, Armes SP. Stimulus-responsive block copolymer nano-objects and hydrogels via dynamic covalent chemistry. Polym Chem 2017; 8:5374-5380. [PMID: 29308094 PMCID: PMC5735357 DOI: 10.1039/c7py01242j] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 07/28/2017] [Indexed: 01/09/2023]
Abstract
Herein we demonstrate that dynamic covalent chemistry can be used to induce reversible morphological transitions in block copolymer nano-objects and hydrogels. Poly(glycerol monomethacrylate)-poly(2-hydroxypropyl methacrylate) (PGMA-PHPMA) diblock copolymer nano-objects (vesicles or worms) were prepared via polymerization-induced self-assembly. Addition of 4-carboxyphenylboronic acid (CPBA) leads to the formation of phenylboronate ester bonds with the 1,2-diol pendent groups on the hydrophilic PGMA stabilizer chains; such binding causes a subtle reduction in the packing parameter, which in turn induces either vesicle-to-worm or worm-to-sphere transitions. Moreover, CPBA binding is pH-dependent, so reversible transitions can be achieved by switching the solution pH, with relatively high copolymer concentrations leading to associated (de)gelation. This distinguishes these new physical hydrogels from the covalently cross-linked gels prepared using dynamic covalent chemistry reported in the literature.
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Affiliation(s)
- Renhua Deng
- Dainton Building , Department of Chemistry , The University of Sheffield , Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ;
| | - Yin Ning
- Dainton Building , Department of Chemistry , The University of Sheffield , Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ;
| | - Elizabeth R Jones
- Dainton Building , Department of Chemistry , The University of Sheffield , Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ;
| | - Victoria J Cunningham
- Dainton Building , Department of Chemistry , The University of Sheffield , Brook Hill , Sheffield , South Yorkshire S3 7HF , UK . ;
| | - Nicholas J W Penfold
- 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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17
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Yeow J, Boyer C. Photoinitiated Polymerization-Induced Self-Assembly (Photo-PISA): New Insights and Opportunities. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1700137. [PMID: 28725534 PMCID: PMC5514979 DOI: 10.1002/advs.201700137] [Citation(s) in RCA: 264] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 04/20/2017] [Indexed: 05/17/2023]
Abstract
The polymerization-induced self-assembly (PISA) process is a useful synthetic tool for the efficient synthesis of polymeric nanoparticles of different morphologies. Recently, studies on visible light initiated PISA processes have offered a number of key research opportunities that are not readily accessible using traditional thermally initiated systems. For example, visible light mediated PISA (Photo-PISA) enables a high degree of control over the dispersion polymerization process by manipulation of the wavelength and intensity of incident light. In some cases, the final nanoparticle morphology of a single formulation can be modulated by simple manipulation of these externally controlled parameters. In addition, temporal (and in principle spatial) control over the Photo-PISA process can be achieved in most cases. Exploitation of the mild room temperature polymerizations conditions can enable the encapsulation of thermally sensitive therapeutics to occur without compromising the polymerization rate and their activities. Finally, the Photo-PISA process can enable further mechanistic insights into the morphological evolution of nanoparticle formation such as the effects of temperature on the self-assembly process. The purpose of this mini-review is therefore to examine some of these recent advances that have been made in Photo-PISA processes, particularly in light of the specific advantages that may exist in comparison with conventional thermally initiated systems.
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Affiliation(s)
- Jonathan Yeow
- School of Chemical EngineeringCentre for Advanced Macromolecular Design (CAMD) and Australian Centre for Nanomedicine (ACN)UNSW SydneySydneyNSW2052Australia
| | - Cyrille Boyer
- School of Chemical EngineeringCentre for Advanced Macromolecular Design (CAMD) and Australian Centre for Nanomedicine (ACN)UNSW SydneySydneyNSW2052Australia
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18
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Zhang WJ, Hong CY, Pan CY. Efficient Fabrication of Photosensitive Polymeric Nano-objects via an Ingenious Formulation of RAFT Dispersion Polymerization and Their Application for Drug Delivery. Biomacromolecules 2017; 18:1210-1217. [DOI: 10.1021/acs.biomac.6b01887] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Wen-Jian Zhang
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chun-Yan Hong
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Cai-Yuan Pan
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
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19
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Ng G, Yeow J, Xu J, Boyer C. Application of oxygen tolerant PET-RAFT to polymerization-induced self-assembly. Polym Chem 2017. [DOI: 10.1039/c7py00442g] [Citation(s) in RCA: 122] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The inhibitory effects of molecular oxygen in PET-RAFT polymerization can be overcome by the addition of singlet oxygen quenchers. This oxygen tolerant approach is compatible with a range of organic solvents and can be used to synthesize nanoparticles according to a PISA process.
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Affiliation(s)
- Gervase Ng
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine
- School of Chemical Engineering
- The University of New South Wales
- Sydney
- Australia
| | - Jonathan Yeow
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine
- School of Chemical Engineering
- The University of New South Wales
- Sydney
- Australia
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine
- School of Chemical Engineering
- The University of New South Wales
- Sydney
- Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine
- School of Chemical Engineering
- The University of New South Wales
- Sydney
- Australia
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20
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Qu Y, Chang X, Chen S, Zhang W. In situ synthesis of thermoresponsive 4-arm star block copolymer nano-assemblies by dispersion RAFT polymerization. Polym Chem 2017. [DOI: 10.1039/c7py00508c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Thermoresponsive 4-arm star block copolymer nano-assemblies were synthesized, and their interesting thermoresponse was investigated.
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Affiliation(s)
- Yaqing Qu
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Xueying Chang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Shengli Chen
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
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21
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22
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Pei Y, Lowe AB, Roth PJ. Stimulus-Responsive Nanoparticles and Associated (Reversible) Polymorphism via Polymerization Induced Self-assembly (PISA). Macromol Rapid Commun 2016; 38. [DOI: 10.1002/marc.201600528] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 10/07/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Yiwen Pei
- Department of Chemistry; Faculty of Engineering and Physical Sciences; University of Surrey; Guildford GU2 7XH United Kingdom
| | - Andrew B. Lowe
- Nanochemistry Research Institute and Department of Chemistry; Curtin University; Bentley Perth 6102 WA Australia
| | - Peter J. Roth
- Department of Chemistry; Faculty of Engineering and Physical Sciences; University of Surrey; Guildford GU2 7XH United Kingdom
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23
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Zhou H, Liu C, Qu Y, Gao C, Shi K, Zhang W. How the Polymerization Procedures Affect the Morphology of the Block Copolymer Nanoassemblies: Comparison between Dispersion RAFT Polymerization and Seeded RAFT Polymerization. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01756] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [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, Institute of Polymer Chemistry and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Chonggao Liu
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Yaqing Qu
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Chengqiang Gao
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Keyu Shi
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
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24
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Zhu M, Liu W, Xiao J, Ling Y, Tang H. Synthesis and UCST-type phase behaviors of OEGylated random copolypeptides in alcoholic solvents. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28232] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Mengxiang Zhu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Wenjun Liu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Jiang Xiao
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Ying Ling
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
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