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Sahu B, Sinha P, Kumar D, Patel K, Banerjee S. Magnetically Recyclable Nanoscale Zero-Valent Iron-Mediated PhotoRDRP in Ionic Liquid toward Smart, Functional Polymers. Macromol Rapid Commun 2024; 45:e2300500. [PMID: 37870940 DOI: 10.1002/marc.202300500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/19/2023] [Indexed: 10/25/2023]
Abstract
A facile method based on recyclable nanoscale zero-valent iron (nZVI)-mediated photoinduced reversible deactivation radical polymerization in ionic liquid (IL) leads to the synthesis of narrow disperse poly(tert-butyl methacrylate) (PTBMA), amphiphilic PTBMA-block-poly(poly(ethylene glycol)methacrylate) diblock copolymer and double hydrophilic poly(methacrylic acid)-block-poly(poly(ethylene glycol)methacrylate) (PMAA-b-PPEGMA) diblock copolymers thereof. Stimuli response of the synthesized PMAA-b-PPEGMA diblock copolymer against variation in pH and temperature is assessed. Recyclability of the nZVI (catalyst) and IL (solvent) is established. Polymerization may be switched ON or OFF, simply by turning the UVA light irradiation ON or OFF, offering temporal control. The diblock copolymer self-aggregates into spherical nanoaggregates which are employed for encapsulation of coumarin 102 (C102, a typical hydrophobic dye), describing their potential application in drug delivery applications. The facile synthesis strategy may open up new avenues for the preparation of intelligent functional polymers for engineering and biomedical applications.
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Affiliation(s)
- Bhanendra Sahu
- Department of Chemistry, Indian Institute of Technology Bhilai, Durg, Chhattisgarh, 491001, India
| | - Priyank Sinha
- Department of Chemistry, Indian Institute of Technology Bhilai, Durg, Chhattisgarh, 491001, India
| | - Devendra Kumar
- Department of Chemistry, Indian Institute of Technology Bhilai, Durg, Chhattisgarh, 491001, India
| | - Kundan Patel
- Department of Chemistry, Indian Institute of Technology Bhilai, Durg, Chhattisgarh, 491001, India
| | - Sanjib Banerjee
- Department of Chemistry, Indian Institute of Technology Bhilai, Durg, Chhattisgarh, 491001, India
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2
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Eng YJ, Nguyen TM, Luo HK, Chan JMW. Antifouling polymers for nanomedicine and surfaces: recent advances. NANOSCALE 2023; 15:15472-15512. [PMID: 37740391 DOI: 10.1039/d3nr03164k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Antifouling polymers are materials that can resist nonspecific interactions with cells, proteins, and other biomolecules. Typically, they are hydrophilic polymers with polar or charged moieties that are capable of strong nonbonding interactions with water molecules. This propensity to bind water generates a surface hydration layer that reduces nonspecific interactions with other molecules and is paramount to the antifouling behavior. This property is especially useful for nanoscale applications such as nanomedicine and surface modifications at the molecular level. In nanomedicine, antifouling polymers such as poly(ethylene glycol) and its alternatives play a key role in shielding drug molecules and therapeutic proteins/genes from the immune system within nanoassemblies, thereby enabling effective delivery to target tissues. For coatings, antifouling polymers help to prevent adhesion of cells and molecules to surfaces and are thus valued in marine and biomedical device applications. In this Review, we survey recent advances in antifouling polymers in the context of nanomedicine and coatings, while shining the spotlight on the major polymer classes such as PEG, polyzwitterions, poly(oxazoline)s, and other nonionic hydrophilic polymers.
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Affiliation(s)
- Yi Jie Eng
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Republic of Singapore.
| | - Tuan Minh Nguyen
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Republic of Singapore.
| | - He-Kuan Luo
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Republic of Singapore.
| | - Julian M W Chan
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Republic of Singapore.
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3
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Chapa-Villarreal FA, Miller M, Rodriguez-Cruz JJ, Pérez-Carlos D, Peppas NA. Self-assembled block copolymer biomaterials for oral delivery of protein therapeutics. Biomaterials 2023; 300:122191. [PMID: 37295223 DOI: 10.1016/j.biomaterials.2023.122191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/17/2023] [Accepted: 06/04/2023] [Indexed: 06/12/2023]
Abstract
Protein therapeutics have guided a transformation in disease treatment for various clinical conditions. They have been successful in numerous applications, but administration of protein therapeutics has been limited to parenteral routes which can decrease patient compliance as they are invasive and painful. In recent years, the synergistic relationship of novel biomaterials with modern protein therapeutics has been crucial in the treatment of diseases that were once thought of as incurable. This has guided the development of a variety of alternative administration routes, but the oral delivery of therapeutics remains one of the most desirable due to its ease of administration. This review addresses important aspects of micellar structures prepared by self-assembled processes with applications for oral delivery. These two characteristics have not been placed together in previous literature within the field. Therefore, we describe the barriers for delivery of protein therapeutics, and we concentrate in the oral/transmucosal pathway where drug carriers must overcome several chemical, physical, and biological barriers to achieve a successful therapeutic effect. We critically discuss recent research on biomaterials systems for delivering such therapeutics with an emphasis on self-assembled synthetic block copolymers. Polymerization methods and nanoparticle preparation techniques are similarly analyzed as well as relevant work in this area. Based on our own and others' research, we analyze the use of block copolymers as therapeutic carriers and their promise in treating a variety of diseases, with emphasis on self-assembled micelles for the next generation of oral protein therapeutic systems.
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Affiliation(s)
- Fabiola A Chapa-Villarreal
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA; Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin TX, USA
| | - Matthew Miller
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA; Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin TX, USA
| | - J Jesus Rodriguez-Cruz
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin TX, USA; Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Diego Pérez-Carlos
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA; Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin TX, USA
| | - Nicholas A Peppas
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA; Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin TX, USA; Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA; Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin TX, USA; Department of Surgery and Perioperative Care, Dell Medical School, The University of Texas at Austin, Austin, TX, USA; Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX, USA.
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4
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Roka N, Pitsikalis M. Synthesis and Micellization Behavior of Amphiphilic Block Copolymers of Poly(N-vinyl Pyrrolidone) and Poly(Benzyl Methacrylate): Block versus Statistical Copolymers. Polymers (Basel) 2023; 15:polym15092225. [PMID: 37177372 PMCID: PMC10181249 DOI: 10.3390/polym15092225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/03/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023] Open
Abstract
Block copolymers of N-vinyl pyrrolidone (NVP) and benzyl methacrylate (BzMA), PNVP-b-PBzMA, were prepared by RAFT polymerization techniques and sequential addition of monomers. The copolymers were characterized by Size Exclusion Chromatography (SEC) and NMR spectroscopy. Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA) and Differential Thermogravimetry (DTG) were employed to study the thermal properties of these copolymers. The micellization behavior in THF, which is a selective solvent for the PBzMA blocks, was examined. For comparison the self-assembly properties of the corresponding statistical copolymers, PNVP-stat-PBzMA, were studied. In addition, the association behavior in aqueous solutions was analyzed for the block copolymers, PNVP-b-PBzMA. In this case, the solvent is selective for the PNVP blocks. Dilute solution viscometry, static (SLS) and dynamic light scattering (DLS) were employed as the tools to investigate the micellar assemblies. The efficient encapsulation of the hydrophobic curcumin within the micellar core of the supramolecular structures in aqueous solutions was demonstrated by UV-Vis spectroscopy and DLS measurements.
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Affiliation(s)
- Nikoletta Roka
- Industrial Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
| | - Marinos Pitsikalis
- Industrial Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
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Balafouti A, Pispas S. Hyperbranched Polyelectrolyte Copolymers as Novel Candidate Delivery Systems for Bio-Relevant Compounds. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16031045. [PMID: 36770053 PMCID: PMC9921860 DOI: 10.3390/ma16031045] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 06/12/2023]
Abstract
In this study, reversible addition-fragmentation chain transfer (RAFT) polymerization is utilized in order to synthesize novel hyperbranched poly(oligoethylene glycol) methyl ether methacrylate-co-tert-butyl methacrylate-co-methacrylic acid) (H-[P(OEGMA-co-tBMA-co-MAA)]) copolymers in combination with selective hydrolysis reactions. The copolymers showing amphiphilicity induced by the polar OEGMA and hydrophobic tBMA monomeric units, and polyelectrolyte character due to MAA units, combined with unique macromolecular architecture were characterized by physicochemical techniques, such as size exclusion chromatography (SEC) and 1H-NMR spectroscopy. The hyperbranched copolymers were investigated in terms of their ability to self-assemble into nanostructures when dissolved in aqueous media. Dynamic light scattering and fluorescence spectroscopy revealed multimolecular aggregates of nanoscale dimensions with low critical aggregation concentration, the size and mass of which depend on copolymer composition and solution conditions, whereas zeta potential measurements indicated pH sensitive features. In addition, aiming to evaluate their potential use as nanocarriers, the copolymers were studied in terms of their drug encapsulation and protein complexation ability utilizing curcumin and lysozyme, as a model hydrophobic drug and a model cationic protein, respectively.
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6
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Synthesis & characterization of amino acid-based acrylamide derived amphiphilic block copolymer using a new xanthate and its influence on cell cytotoxicity & cell viability. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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7
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Dau H, Jones GR, Tsogtgerel E, Nguyen D, Keyes A, Liu YS, Rauf H, Ordonez E, Puchelle V, Basbug Alhan H, Zhao C, Harth E. Linear Block Copolymer Synthesis. Chem Rev 2022; 122:14471-14553. [PMID: 35960550 DOI: 10.1021/acs.chemrev.2c00189] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Block copolymers form the basis of the most ubiquitous materials such as thermoplastic elastomers, bridge interphases in polymer blends, and are fundamental for the development of high-performance materials. The driving force to further advance these materials is the accessibility of block copolymers, which have a wide variety in composition, functional group content, and precision of their structure. To advance and broaden the application of block copolymers will depend on the nature of combined segmented blocks, guided through the combination of polymerization techniques to reach a high versatility in block copolymer architecture and function. This review provides the most comprehensive overview of techniques to prepare linear block copolymers and is intended to serve as a guideline on how polymerization techniques can work together to result in desired block combinations. As the review will give an account of the relevant procedures and access areas, the sections will include orthogonal approaches or sequentially combined polymerization techniques, which increases the synthetic options for these materials.
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Affiliation(s)
- Huong Dau
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Glen R Jones
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Enkhjargal Tsogtgerel
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Dung Nguyen
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Anthony Keyes
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Yu-Sheng Liu
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Hasaan Rauf
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Estela Ordonez
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Valentin Puchelle
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Hatice Basbug Alhan
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Chenying Zhao
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
| | - Eva Harth
- Department of Chemistry, University of Houston, Center for Excellence in Chemistry, CEPC, Houston, Texas 77004, United States
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8
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Roka N, Kokkorogianni O, Kontoes-Georgoudakis P, Choinopoulos I, Pitsikalis M. Recent Advances in the Synthesis of Complex Macromolecular Architectures Based on Poly(N-vinyl pyrrolidone) and the RAFT Polymerization Technique. Polymers (Basel) 2022; 14:polym14040701. [PMID: 35215614 PMCID: PMC8880212 DOI: 10.3390/polym14040701] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/31/2022] [Accepted: 02/09/2022] [Indexed: 11/16/2022] Open
Abstract
Recent advances in the controlled RAFT polymerization of complex macromolecular architectures based on poly(N-vinyl pyrrolidone), PNVP, are summarized in this review article. Special interest is given to the synthesis of statistical copolymers, block copolymers, and star polymers and copolymers, along with graft copolymers and more complex architectures. In all cases, PNVP is produced via RAFT techniques, whereas other polymerization methods can be employed in combination with RAFT to provide the desired final products. The advantages and limitations of the synthetic methodologies are discussed in detail.
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9
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Farmanbordar H, Amini-Fazl MS, Mohammadi R. Synthesis of core-shell structure based on silica nanoparticles and methacrylic acid via RAFT method: An efficient pH-sensitive hydrogel for prolonging doxorubicin release. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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11
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Jiang K, Wen G, Skandalis A, Pispas S, Ding Y, Chen H. Influences of subphase pH and temperature on the interfacial aggregation behavior of poly(lauryl methacrylate)-block-poly(methacrylic acid). Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Farmanbordar H, Amini-Fazl MS, Mohammadi R. pH-Sensitive silica-based core–shell nanogel prepared via RAFT polymerization: investigation of the core size effect on the release profile of doxorubicin. NEW J CHEM 2021. [DOI: 10.1039/d1nj03304b] [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
The novelty of this work is the synthesis of a core–shell nanogel that is based on silica nanoparticles as the core with different sizes via RAFT polymerization and its application to drug delivery.
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Affiliation(s)
- Hassan Farmanbordar
- Research Laboratory of Advanced Polymer Material, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz 51666, Iran
| | - Mohammad Sadegh Amini-Fazl
- Research Laboratory of Advanced Polymer Material, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz 51666, Iran
| | - Reza Mohammadi
- Polymer Research Laboratory, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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13
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Grytsenko O, Dulebova L, Suberlyak O, Skorokhoda V, Spišák E, Gajdoš I. Features of Structure and Properties of pнeмa-gr-pvp Block Copolymers, Obtained in the Presence of Fe 2. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4580. [PMID: 33066646 PMCID: PMC7602374 DOI: 10.3390/ma13204580] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 11/29/2022]
Abstract
This paper presents the research results of the copolymer structure and properties of 2-hydroxyethylmethacrylate (HEMA) with polyvinylpyrrolidone (PVP) and their hydrogels, obtained by block polymerization in the presence of iron sulfate (II). By the methods of chemical analysis, IR spectroscopy, Thermogravimetric (TG) and Differential Thermal Analysis (DTA), the course of grafted copolymerization of HEMA on PVP with the formation of a cross-linked copolymer was confirmed. The results received by scanning electron microscopy showed that due to the copolymerization of HEMA with PVP, macroporous hydrogels with a pore size of 10-30 μm were obtained. The peculiarities of the structure formation of the obtained copolymers depending on the initial composition formulation were established and their structural parameters were investigated: PVP grafting efficiency, PVP content in copolymer, molecular weight of internodal fragment of polymer network, crosslinking degree, and crosslinking density. The interrelation of sorption-diffusion, physical-mechanical and thermophysical properties along with the structure of the obtained materials was proved. It was shown that with the increasing PVP content in the original composition, the efficiency of its grafting and crosslinking density of the polymer network decreased, but the surface hardness, heat resistance, sorption capacity of copolymers in the dry state, as well as ion permeability and elasticity in the swollen state increased, while their tensile strength deteriorated. It is proved that by changing the original composition formulation it is possible to change the structure and hence the properties of the copolymers in the desired direction.
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Affiliation(s)
- Oleksandr Grytsenko
- Department of Chemical Technology of Plastics Processing, Lviv Polytechnic National University, 12 St. Bandera, 79013 Lviv, Ukraine; (O.G.); (O.S.); (V.S.)
| | - Ludmila Dulebova
- Department of Technologies, Materials and Computer Aided Production, Technical University of Košice, 74 Mäsiarska, 04001 Košice, Slovakia; (E.S.); (I.G.)
| | - Oleh Suberlyak
- Department of Chemical Technology of Plastics Processing, Lviv Polytechnic National University, 12 St. Bandera, 79013 Lviv, Ukraine; (O.G.); (O.S.); (V.S.)
| | - Volodymyr Skorokhoda
- Department of Chemical Technology of Plastics Processing, Lviv Polytechnic National University, 12 St. Bandera, 79013 Lviv, Ukraine; (O.G.); (O.S.); (V.S.)
| | - Emil Spišák
- Department of Technologies, Materials and Computer Aided Production, Technical University of Košice, 74 Mäsiarska, 04001 Košice, Slovakia; (E.S.); (I.G.)
| | - Ivan Gajdoš
- Department of Technologies, Materials and Computer Aided Production, Technical University of Košice, 74 Mäsiarska, 04001 Košice, Slovakia; (E.S.); (I.G.)
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14
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Wang Y, Wang M, Bai L, Zhang L, Cheng Z, Zhu X. Facile synthesis of poly(N-vinyl pyrrolidone) block copolymers with “more-activated” monomers by using photoinduced successive RAFT polymerization. Polym Chem 2020. [DOI: 10.1039/c9py01763a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Well-defined PNVP block copolymers with more-activated monomers were synthesized by a single RAFT polymerization method under irradiation with visible light at room temperature.
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Affiliation(s)
- Yingjie Wang
- Suzhou key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Chemical Engineering and Materials Science
| | - Mengqi Wang
- Suzhou key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Chemical Engineering and Materials Science
| | - Liangjiu Bai
- School of Chemistry and Materials Science
- Ludong University
- Key Laboratory of High Performance and Functional Polymers in the Universities of Shandong Province
- Yantai 264025
- China
| | - Lifen Zhang
- Suzhou key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Chemical Engineering and Materials Science
| | - Zhenping Cheng
- Suzhou key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Chemical Engineering and Materials Science
| | - Xiulin Zhu
- Suzhou key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Chemical Engineering and Materials Science
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15
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Nie H, Li S, Qian S, Han Z, Zhang W. Switchable Reversible Addition–Fragmentation Chain Transfer (RAFT) Polymerization with the Assistance of Azobenzenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Huijun Nie
- Key Laboratory of Functional Polymer Materials of the Ministry of EducationInstitute of Polymer ChemistryCollege of ChemistryNankai University 300071 Tianjin China
| | - Shenzhen Li
- Key Laboratory of Functional Polymer Materials of the Ministry of EducationInstitute of Polymer ChemistryCollege of ChemistryNankai University 300071 Tianjin China
| | - Sijia Qian
- Key Laboratory of Functional Polymer Materials of the Ministry of EducationInstitute of Polymer ChemistryCollege of ChemistryNankai University 300071 Tianjin China
| | - Zhongqiang Han
- State Key Laboratory of Special Functional Waterproof MaterialsBeijing Oriental Yuhong Waterproof Technology Co., Ltd. 100123 Beijing China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of EducationInstitute of Polymer ChemistryCollege of ChemistryNankai University 300071 Tianjin China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 300071 Tianjin China
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16
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Nie H, Li S, Qian S, Han Z, Zhang W. Switchable Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization with the Assistance of Azobenzenes. Angew Chem Int Ed Engl 2019; 58:11449-11453. [PMID: 31190462 DOI: 10.1002/anie.201904991] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/22/2019] [Indexed: 12/31/2022]
Abstract
Modulating controlled radical polymerization is an interesting and important issue. Herein, modulating RAFT polymerization employing photosensitive azobenzenes is achieved. In the presence of azobenzenes and with visible light off, RAFT polymerization runs smoothly and follows a pseudo-first-order kinetics. In contrast, with light on, RAFT polymerization is greatly decelerated or quenched depending on the type and concentration of azobenzenes. Switchable RAFT polymerization of different (meth)acrylate monomers alternatively with light off and on is demonstrated. A mechanism of photoregulating RAFT polymerization involving radical quenching by azobenzenes is proposed.
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Affiliation(s)
- Huijun Nie
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Shenzhen Li
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Sijia Qian
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Zhongqiang Han
- State Key Laboratory of Special Functional Waterproof Materials, Beijing Oriental Yuhong Waterproof Technology Co., Ltd., 100123, Beijing, China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071, Tianjin, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, 300071, Tianjin, China
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17
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Al Nakeeb N, Nischang I, Schmidt BVKJ. Tannic Acid-Mediated Aggregate Stabilization of Poly( N-vinylpyrrolidone)- b-poly(oligo (ethylene glycol) methyl ether methacrylate) Double Hydrophilic Block Copolymers. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E662. [PMID: 31035517 PMCID: PMC6566864 DOI: 10.3390/nano9050662] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 04/22/2019] [Accepted: 04/24/2019] [Indexed: 11/16/2022]
Abstract
The self-assembly of block copolymers in aqueous solution is an important field in modern polymer science that has been extended to double hydrophilic block copolymers (DHBC) in recent years. In here, a significant improvement of the self-assembly process of DHBC in aqueous solution by utilizing a linear-brush macromolecular architecture is presented. The improved self-assembly behavior of poly(N-vinylpyrrolidone)-b-poly(oligo(ethylene glycol) methyl ether methacrylate) (PVP-b-P(OEGMA)) and its concentration dependency is investigated via dynamic light scattering (DLS) (apparent hydrodynamic radii ≈ 100-120 nm). Moreover, the DHBC assemblies can be non-covalently crosslinked with tannic acid via hydrogen bonding, which leads to the formation of small aggregates as well (apparent hydrodynamic radius ≈ 15 nm). Non-covalent crosslinking improves the self-assembly and stabilizes the aggregates upon dilution, reducing the concentration dependency of aggregate self-assembly. Additionally, the non-covalent aggregates can be disassembled in basic media. The presence of aggregates was studied via cryogenic scanning electron microscopy (cryo-SEM) and DLS before and after non-covalent crosslinking. Furthermore, analytical ultracentrifugation of the formed aggregate structures was performed, clearly showing the existence of polymer assemblies, particularly after non-covalent crosslinking. In summary, we report on the completely hydrophilic self-assembled structures in solution formed from fully biocompatible building entities in water.
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Affiliation(s)
- Noah Al Nakeeb
- Max-Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Am Mühlenberg 1, 14476 Potsdam, Germany.
| | - Ivo Nischang
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany.
| | - Bernhard V K J Schmidt
- Max-Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Am Mühlenberg 1, 14476 Potsdam, Germany.
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