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Prause A, Hechenbichler M, Schmidt RF, Simon M, Prévost S, Cavalcanti LP, Talmon Y, Laschewsky A, Gradzielski M. Rheological Control of Aqueous Dispersions by Thermoresponsive BAB* Copolymers of Different Architectures. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Albert Prause
- FG Physical Chemistry/Molecular Material Science, Technische Universität Berlin, Straße des 17. Juni 135, Berlin10623, Germany
| | - Michelle Hechenbichler
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Straße 24−25, Potsdam14476, Germany
| | - Robert F. Schmidt
- FG Physical Chemistry/Molecular Material Science, Technische Universität Berlin, Straße des 17. Juni 135, Berlin10623, Germany
| | - Miriam Simon
- Department of Chemical Engineering and The Russell Berrie Nanotechnology Institute (RBNI), Technion-Israel Institute of Technology, Haifa3200003, Israel
| | - Sylvain Prévost
- Institut Laue−Langevin, DS/LSS, 71 Avenue des Martyrs, CS 20 156, Grenoble Cedex 9F-38042, France
| | - Leide P. Cavalcanti
- ISIS Facility, STFC, Rutherford Appleton Laboratory, Harwell Campus, DidcotOX11 0QX, UK
| | - Yeshayahu Talmon
- Department of Chemical Engineering and The Russell Berrie Nanotechnology Institute (RBNI), Technion-Israel Institute of Technology, Haifa3200003, Israel
| | - André Laschewsky
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Straße 24−25, Potsdam14476, Germany
- Fraunhofer Institute of Applied Polymer Research IAP, Geiselbergstraße 69, Potsdam14476, Germany
| | - Michael Gradzielski
- FG Physical Chemistry/Molecular Material Science, Technische Universität Berlin, Straße des 17. Juni 135, Berlin10623, Germany
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Zhang Y, Wang P, Li N, Guo C, Li S. The Effect of Topology on Block Copolymer Nanoparticles: Linear versus Star Block Copolymers in Toluene. Polymers (Basel) 2022; 14:polym14173691. [PMID: 36080766 PMCID: PMC9460934 DOI: 10.3390/polym14173691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 08/27/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022] Open
Abstract
Linear and star block copolymer (BCP) nanoparticles of (polystyrene-block-poly(4-vinylpyridine))n (PS-b-P4VP)n with arm numbers of 1, 2, 3, and 4 were prepared by two methods of polymerization-induced self-assembly (PISA) and general self-assembly of block copolymers in the low-polar organic solvent, toluene. The effect of the arm number on the size and/or morphology of the (PS-b-P4VP)n nanoassemblies synthesized by the two methods in toluene and on the polymerization kinetics was investigated in detail. Our results show that in toluene, a low-polar solvent, the topology not only affected the morphology of the BCP nanoparticles prepared by PISA, but also influenced the BCP nanoparticles synthesized through general self-assembly.
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Prause A, Hechenbichler M, von Lospichl B, Feoktystov A, Schweins R, Mahmoudi N, Laschewsky A, Gradzielski M. Aggregation Behavior of Nonsymmetrically End-Capped Thermoresponsive Block Copolymers in Aqueous Solutions: Between Polymer Coils and Micellar States. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Albert Prause
- FG Physical Chemistry/Molecular Material Science, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Michelle Hechenbichler
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Straße 24−25, 14476 Potsdam, Germany
| | - Benjamin von Lospichl
- FG Physical Chemistry/Molecular Material Science, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Artem Feoktystov
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Ralf Schweins
- Institut Laue−Langevin, DS/LSS, 71 Avenue des Martyrs, CS 20 156, F-38042 Grenoble Cedex 9, France
| | - Najet Mahmoudi
- ISIS Facility, STFC, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, U.K
| | - André Laschewsky
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Straße 24−25, 14476 Potsdam, Germany
- Fraunhofer Institute of Applied Polymer Research IAP, Geiselbergstraße 69, 14476 Potsdam, Germany
| | - Michael Gradzielski
- FG Physical Chemistry/Molecular Material Science, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
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Hechenbichler M, Prause A, Gradzielski M, Laschewsky A. Thermoresponsive Self-Assembly of Twofold Fluorescently Labeled Block Copolymers in Aqueous Solution and Microemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5166-5182. [PMID: 34734729 DOI: 10.1021/acs.langmuir.1c02318] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A nonionic double hydrophilic block copolymer with a long permanently hydrophilic and a small thermoresponsive block is synthesized by reversible addition-fragmentation chain-transfer polymerization (RAFT). By employing a specifically designed chain-transfer agent, the polymer is functionalized with complementary end groups which are suited for Förster resonance energy transfer (FRET). The end group attached to the permanently hydrophilic block of poly(N,N-dimethylacrylamide) pDMAm is designed as a permanently hydrophobic segment ("sticker") comprising a long alkyl chain and the 4-aminonaphthalimide fluorophore. The other end attached to the thermoresponsive block of poly(N-isopropylacrylamide) pNiPAm incorporates a coumarin fluorophore. The temperature-dependent self-assembly of the twofold fluorescently labeled copolymer is studied in pure aqueous solution as well as in an o/w microemulsion by several techniques including turbidimetry, dynamic light scattering (DLS), and fluorescence spectroscopy. It is compared to the behaviors of the analogous twofold-labeled pDMAm and pNiPAm homopolymer references. The findings indicate that the block copolymer behaves as a polymeric surfactant at low temperatures, with one relatively small hydrophobic end block and an extended hydrophilic chain forming "hairy micelles". At elevated temperatures above the LCST phase transition of the pNiPAm block, however, the copolymer behaves as an associative telechelic polymer with two nonsymmetrical hydrophobic end blocks, which do not mix. Thus, instead of a network of bridged "flower micelles", large dynamic aggregates are formed. These are connected alternatingly by the original micellar cores as well as by clusters of the collapsed pNiPAm blocks. This type of structure is even more favored in the o/w microemulsion than in pure aqueous solution, as the microemulsion droplets constitute an attractive anchoring point for the hydrophobic dodecyl sticker but not for the collapsed pNiPAm chains.
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Affiliation(s)
- Michelle Hechenbichler
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam-Golm, Germany
| | - Albert Prause
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, FG Physical Chemistry/Molecular Material Science Institute of Chemistry, Technische Universität Berlin, Straße des 17 Juni 124, 10623 Berlin, Germany
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, FG Physical Chemistry/Molecular Material Science Institute of Chemistry, Technische Universität Berlin, Straße des 17 Juni 124, 10623 Berlin, Germany
| | - André Laschewsky
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam-Golm, Germany
- Fraunhofer Institute of Applied Polymer Research IAP, Fraunhofer Institute, Geiselbergstr. 69, 14476 Potsdam-Golm, Germany
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5
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Nabiyan A, Max JB, Schacher FH. Double hydrophilic copolymers - synthetic approaches, architectural variety, and current application fields. Chem Soc Rev 2022; 51:995-1044. [PMID: 35005750 DOI: 10.1039/d1cs00086a] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Solubility and functionality of polymeric materials are essential properties determining their role in any application. In that regard, double hydrophilic copolymers (DHC) are typically constructed from two chemically dissimilar but water-soluble building blocks. During the past decades, these materials have been intensely developed and utilised as, e.g., matrices for the design of multifunctional hybrid materials, in drug carriers and gene delivery, as nanoreactors, or as sensors. This is predominantly due to almost unlimited possibilities to precisely tune DHC composition and topology, their solution behavior, e.g., stimuli-response, and potential interactions with small molecules, ions and (nanoparticle) surfaces. In this contribution we want to highlight that this class of polymers has experienced tremendous progress regarding synthesis, architectural variety, and the possibility to combine response to different stimuli within one material. Especially the implementation of DHCs as versatile building blocks in hybrid materials expanded the range of water-based applications during the last two decades, which now includes also photocatalysis, sensing, and 3D inkjet printing of hydrogels, definitely going beyond already well-established utilisation in biomedicine or as templates.
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Affiliation(s)
- Afshin Nabiyan
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany. .,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany.,Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Johannes B Max
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany. .,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany.,Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Felix H Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany. .,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany.,Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
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6
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Zhou P, Shi B, Liu Y, Li P, Wang G. Exploration of the modification-induced self-assembly (MISA) technique and the preparation of nano-objects with a functional poly(acrylic acid) core. Polym Chem 2022. [DOI: 10.1039/d2py00666a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The hydrolysis-based post-polymerization modification method was introduced into the self-assembly process and a modification-induced self-assembly (MISA) technique was presented.
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Affiliation(s)
- Peng Zhou
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Boyang Shi
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Yuang Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Penghan Li
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Guowei Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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7
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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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Poly(N,N-bis(2-methoxyethyl)acrylamide), a thermoresponsive non-ionic polymer combining the amide and the ethyleneglycolether motifs. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04701-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AbstractPoly(N,N-bis(2-methoxyethyl)acrylamide) (PbMOEAm) featuring two classical chemical motifs from non-ionic water-soluble polymers, namely, the amide and ethyleneglycolether moieties, was synthesized by reversible addition fragmentation transfer (RAFT) polymerization. This tertiary polyacrylamide is thermoresponsive exhibiting a lower critical solution temperature (LCST)–type phase transition. A series of homo- and block copolymers with varying molar masses but low dispersities and different end groups were prepared. Their thermoresponsive behavior in aqueous solution was analyzed via turbidimetry and dynamic light scattering (DLS). The cloud points (CP) increased with increasing molar masses, converging to 46 °C for 1 wt% solutions. This rise is attributed to the polymers’ hydrophobic end groups incorporated via the RAFT agents. When a surfactant-like strongly hydrophobic end group was attached using a functional RAFT agent, CP was lowered to 42 °C, i.e., closer to human body temperature. Also, the effect of added salts, in particular, the role of the Hofmeister series, on the phase transition of PbMOEAm was investigated, exemplified for the kosmotropic fluoride, intermediate chloride, and chaotropic thiocyanate anions. A pronounced shift of the cloud point of about 10 °C to lower or higher temperatures was observed for 0.2 M fluoride and thiocyanate, respectively. When PbMOEAm was attached to a long hydrophilic block of poly(N,N-dimethylacrylamide) (PDMAm), the cloud points of these block copolymers were strongly shifted towards higher temperatures. While no phase transition was observed for PDMAm-b-pbMOEAm with short thermoresponsive blocks, block copolymers with about equally sized PbMOEAm and PDMAm blocks underwent the coil-to-globule transition around 60 °C.
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Song S, Puzhitsky M, Ye S, Abtahi M, Rastogi CK, Lu E, Hicks G, Manners I, Winnik MA. Crystallization-Driven Self-Assembly of Amphiphilic Triblock Terpolymers With Two Corona-Forming Blocks of Distinct Hydrophilicities. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01414] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shaofei Song
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Matthew Puzhitsky
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Shuyang Ye
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Mahtab Abtahi
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | | | - Elsa Lu
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Garion Hicks
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E2, Canada
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Abutalip M, Mahmood A, Rakhmetullayeva R, Shakhvorostov A, Dauletov Y, Kudaibergenov S, Nuraje N. Reversible Addition?Fragmentation Chain-Transfer Polymerization of Amphiphilic Polycarboxybetaines and Their Molecular Interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8389-8397. [PMID: 31199657 DOI: 10.1021/acs.langmuir.9b01347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, we report the first molecular weight-controlled amphiphilic polybetaine synthesis using various hydrocarbons via reversible addition?fragmentation chain-transfer (RAFT) polymerization. The experimental separation of the alkyl aminocrotonate tautomers, which has been the subject of debate, was completed for the first time. The enamine form of these tautomers was further used as a monomer for the RAFT polymerization of amphiphilic polycarboxybetaines. Self-assembly of the amphiphilic polycarboxybetaines showed micelle structures from spherical, rod-like to fractal in the aqueous media due to the competition between both electrostatic and hydrophobic forces. Hydrophobically dominant interactions among amphiphilic polycarboxybetaines and long-chain hydrocarbon alkane molecules were investigated to understand long-chain hydrocarbon alkane crystallization using alkane crystal deposition and viscosity experiments. Strong hydrophobic forces between poly(hexadecyl-grafted aminocrotonate?methacrylic acid) and long-chain hydrocarbon alkane molecules changed the surface properties of the long-chain hydrocarbon alkane nucleus and inhibited the growth of paraffin crystals.
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Affiliation(s)
- Munziya Abutalip
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
- Department of Chemistry and Chemical Technology , Al-Farabi Kazakh National University , Almaty 050040 , Kazakhstan
| | - Anam Mahmood
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
| | - Raikhan Rakhmetullayeva
- Department of Chemistry and Chemical Technology , Al-Farabi Kazakh National University , Almaty 050040 , Kazakhstan
| | - Alexey Shakhvorostov
- Laboratory of Engineering Profile , K.I. Satpayev Kazakh National Research Technical University , Almaty 050013 , Kazakhstan
- Institute of Polymer Materials and Technology , Almaty 050013 , Kazakhstan
| | - Yerbol Dauletov
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
| | - Sarkyt Kudaibergenov
- Laboratory of Engineering Profile , K.I. Satpayev Kazakh National Research Technical University , Almaty 050013 , Kazakhstan
- Institute of Polymer Materials and Technology , Almaty 050013 , Kazakhstan
| | - Nurxat Nuraje
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
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ABA-type triblock copolymer micellar system with lower critical solution temperature-type sol-gel transition. J Colloid Interface Sci 2019; 545:220-230. [PMID: 30889413 DOI: 10.1016/j.jcis.2019.03.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 01/17/2023]
Abstract
A temperature sensitive sol-gel transition induced by the self-assembly of amphiphilic copolymers and its application in industry have been the objects of increasing study. We demonstrate here a two-step, reversible addition-fragmentation chain transfer (RAFT) polymerization of an ABA-type copolymer consisting of poly(N,N-dimethylacrylamide)-b-poly(diacetone acrylamide)-b-poly(N,N-dimethylacrylamide) (PDMAA-b-PDAAM-b-PDMAA). This copolymer can be easily dispersed in water, and this dispersion is critical for its lower critical solution temperature (LCST)-type sol-gel transition, which was monitored using dynamic light scattering (DLS), transmission electron microscopy (TEM), and rheology analysis, in addition to temperature-dependent 1H nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR). Results revealed an abnormal sphere-to-worm micellar transition of this ABA copolymer at the LCST point, which could be affected by the length of the PDAAM block (B-block), the length as well as the distribution of the PDMAA block (A-block), and the concentration of the copolymer dispersion. Thus, copolymer dispersion could be feasibly used for drug loading at a low temperature, which could then be transformed into a gel at an elevated temperature. The loading and controllable release of the model drug of paracetamol into and out of a copolymer gel was further determined. The sustained release behavior was also studied using the Rigter-Peppas model.
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13
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Pang Y, Jin X, Huang G, Wan L, Ji S. Directed Self-Assembly of Styrene-Methyl Acrylate Block Copolymers with Sub-7 nm Features via Thermal Annealing. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00174] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yuanyuan Pang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
| | - Xiaosa Jin
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
| | - Guangcheng Huang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
| | - Lei Wan
- HGST, A Western Digital Company, San Jose Research Center, 5601 Great Oaks Parkway, San Jose, California 95119, United States
| | - Shengxiang Ji
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
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Zhao X, Abutalip M, Afroz K, Nuraje N. Hydrophobically Modified Polycarboxybetaine: From Living Radical Polymerization to Self-Assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1606-1612. [PMID: 30558424 DOI: 10.1021/acs.langmuir.8b03561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Polybetaines have received widespread attention due to their smart response properties and structures which resemble biological polymers like peptides and DNA. However, few studies have focused on the controlled synthesis and self-assembly of hydrophobically modified polybetaines due to the difficulty of synthesizing these materials. We report the first molecular weight-controlled synthesis of hydrophobically modified polycarboxybetaines (HMPCB). Poly(dodecyl grafted aminocrotonate -methacrylic acid) (P(DACRO-MAA)) was synthesized via the reversible addition-fragmentation chain-transfer (RAFT) polymerization approach. The two different tautomers of the monomer were also successfully identified and separated via thin layer chromatography (TLC) and column chromatography, making it possible to obtain pure polycarboxybetaine via RAFT synthesis. Both the successfully separated enamine form of the monomer and the resulting polycarboxybetaine were confirmed via FTIR and NMR. The polycarboxybetaine was found to have a low polydispersity (PDI) of 1.214, and its molecular weight was determined as 70590 g/mol via gel permeation chromatography (GPC) measurements. Spherical, rodlike, and fractal assembled structures for the P(DACRO-MAA) were observed with pH change using TEM, zeta sizer, and dynamic light scattering (DLS). The unique self-assembled structures of HMPCB synthesized via RAFT provide an opportunity to understand fundamental polymer science and can be engineered for broad applications.
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Affiliation(s)
- Xiao Zhao
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
| | - Munziya Abutalip
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
- Department of Chemistry and Chemical Technology , al-Farabi Kazakh National University , Almaty , Kazakhstan
| | - Khurshida Afroz
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
| | - Nurxat Nuraje
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
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15
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Zhang Y, Guan T, Han G, Guo T, Zhang W. Star Block Copolymer Nanoassemblies: Block Sequence is All-Important. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02427] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yuan Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Tianyun Guan
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Guang Han
- State Key Laboratory
of Special Functional Waterproof Materials, Beijing Oriental Yuhong
Waterproof Technology Co., Ltd, Beijing 100123, China
| | - Tianying Guo
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
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16
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Zhang Y, Cao M, Han G, Guo T, Ying T, Zhang W. Topology Affecting Block Copolymer Nanoassemblies: Linear Block Copolymers versus Star Block Copolymers under PISA Conditions. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01121] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | | | - Guang Han
- State Key Laboratory of Special Functional Waterproof Materials, Beijing Oriental Yuhong Waterproof Technology Co., Ltd., Beijing 100123, China
| | | | - Tengyuan Ying
- Institute of Semiconductor
Technology of Tianjin, Tianjin, China
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17
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Biais P, Beaunier P, Stoffelbach F, Rieger J. Loop-stabilized BAB triblock copolymer morphologies by PISA in water. Polym Chem 2018. [DOI: 10.1039/c8py00914g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Assemblies of BAB triblock copolymers are prepared by PISA via aqueous RAFT dispersion polymerization. The importance of charges in the middle of the hydrophilic stabilizer loops is highlighted.
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Affiliation(s)
- Pauline Biais
- Sorbonne Université
- CNRS
- UMR 8232
- Institut Parisien de Chimie Moléculaire (IPCM)
- 75252 Paris Cedex 05
| | - Patricia Beaunier
- Sorbonne Université
- CNRS
- UMR 7197
- Laboratoire de Réactivité de Surface (LRS)
- 75252 Paris Cedex 05
| | - François Stoffelbach
- Sorbonne Université
- CNRS
- UMR 8232
- Institut Parisien de Chimie Moléculaire (IPCM)
- 75252 Paris Cedex 05
| | - Jutta Rieger
- Sorbonne Université
- CNRS
- UMR 8232
- Institut Parisien de Chimie Moléculaire (IPCM)
- 75252 Paris Cedex 05
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18
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Zhou X, Chang C, Zhou Y, Sun L, Xiang H, Zhao S, Ma L, Zheng G, Liu M, Wei H. A comparison study to investigate the effect of the drug-loading site on its delivery efficacy using double hydrophilic block copolymer-based prodrugs. J Mater Chem B 2017; 5:4443-4454. [PMID: 32263972 DOI: 10.1039/c7tb00261k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Polymeric delivery vehicles can improve the safety and efficacy of chemotherapy drugs by facilitating preferential tumor delivery. Double hydrophilic block copolymer (DHBC)-based prodrugs are considered as ideal candidates for drug delivery due to the elegant integration of benefits from both structures including polymeric prodrugs' superior protection and minimal premature drug release using covalent links and a DHBC-based "green" self-assembly strategy by a simple stimulus in a pure aqueous phase without the use of any organic solvent. Clearly, the location of drug molecules in the polymeric prodrugs has exerted a significant effect on their therapeutic efficiency. However, there has been no published data so far, to our knowledge, reporting the effect of drug-conjugated sites on its therapeutic efficacy, as well as some basic guidelines that can be followed to direct the future design of polymeric prodrugs. To this end, herein a thermo-sensitive DHBC, poly(N-(2-hydroxypropyl) methacrylamide)-b-poly(N-isopropyl acrylamide) (P(HPMA)-b-P(NIPAAm)), was designed and synthesized by successive reversible addition and fragmentation chain transfer (RAFT) polymerizations, and was chosen as a platform to clarify this issue. An anti-cancer drug, doxorubicin (DOX) was conjugated to the hydrophilic PHPMA block and the temperature-responsive P(NIPAAm) block, respectively, through a pH-liable hydrazone bond to fabricate two different types of polymeric prodrugs with the drug tethered to the micellar hydrophilic PHPMA shell or encapsulated within the hydrophobic P(NIPAAm) core upon temperature elevation above its lower critical solution temperature (LCST). A detailed comparison study was carried out to investigate which structure exhibits better properties and higher therapeutic efficacy in terms of micellar size, stability, cellular uptake, drug loading capacity, drug release behaviors and cell viability. The results showed the self-assembly of both DHBC-based prodrugs into well-dispersed spherical micelles with similar average hydrodynamic diameters (Dh) around 150 nm in phosphate buffer (PBS, pH 7.4) at 37 °C, but a higher drug loading content (DLC), and enhanced pH-mediated drug release, i.e., much accelerated drug release at pH 5.0, while slower at pH 7.4, as well as enhanced cytotoxicity when the drug was conjugated to the hydrophilic shell of the micelles. The guidelines obtained in this study are thus believed to direct the future design and development of polymeric prodrugs for efficient cancer therapy.
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Affiliation(s)
- Xufeng Zhou
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China.
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19
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Radzevicius P, Steponaviciute M, Krivorotova T, Makuska R. Double thermoresponsive pentablock copolymers: synthesis by one-pot RAFT polymerization and self-assembly in aqueous solutions. Polym Chem 2017. [DOI: 10.1039/c7py01546a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Pentablock copolymers synthesized by one-pot successive RAFT polymerization are double thermoresponsive and exhibit block sequence dependent aggregation in aqueous solutions.
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Affiliation(s)
| | | | | | - Ricardas Makuska
- Department of Polymer Chemistry
- Vilnius University
- LT-03225 Vilnius
- Lithuania
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20
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Sun L, Zhou Y, Zhou X, Fu Q, Zhao S, Tu X, Zhang X, Ma L, Liu M, Wei H. Dual transitions of toothbrush-like double hydrophilic block copolymers. Polym Chem 2017. [DOI: 10.1039/c6py02051h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An interesting thermo-regulated dual transition from unimers to vesicles, and finally to micelles, was reported for the first time based on a toothbrush-like double hydrophilic block copolymer.
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21
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Herfurth C, Laschewsky A, Noirez L, von Lospichl B, Gradzielski M. Thermoresponsive (star) block copolymers from one-pot sequential RAFT polymerizations and their self-assembly in aqueous solution. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.089] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Voorhaar L, Hoogenboom R. Supramolecular polymer networks: hydrogels and bulk materials. Chem Soc Rev 2016; 45:4013-31. [PMID: 27206244 DOI: 10.1039/c6cs00130k] [Citation(s) in RCA: 268] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Supramolecular polymer networks are materials crosslinked by reversible supramolecular interactions, such as hydrogen bonding or electrostatic interactions. Supramolecular materials show very interesting and useful properties resulting from their dynamic nature, such as self-healing, stimuli-responsiveness and adaptability. Here we will discuss recent progress in polymer-based supramolecular networks for the formation of hydrogels and bulk materials.
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Affiliation(s)
- Lenny Voorhaar
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
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23
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Wang W, Gao C, Qu Y, Song Z, Zhang W. In Situ Synthesis of Thermoresponsive Polystyrene-b-poly(N-isopropylacrylamide)-b-polystyrene Nanospheres and Comparative Study of the Looped and Linear Poly(N-isopropylacrylamide)s. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00233] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Wei Wang
- 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
| | - 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
| | - Zefeng Song
- 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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Qu Y, Wang S, Khan H, Gao C, Zhou H, Zhang W. One-pot preparation of BAB triblock copolymer nano-objects through bifunctional macromolecular RAFT agent mediated dispersion polymerization. Polym Chem 2016. [DOI: 10.1039/c5py01917f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nano-assemblies of a BAB triblock copolymer containing a solvophilic A block and two solvophobic B blocks were prepared through dispersion RAFT polymerization.
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Affiliation(s)
- Yaqing Qu
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Shuang Wang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Habib Khan
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Chengqiang Gao
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Heng Zhou
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
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25
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Zhao Y, Bai T, Shao Q, Jiang S, Shen AQ. Thermoresponsive self-assembled NiPAm-zwitterion copolymers. Polym Chem 2015. [DOI: 10.1039/c4py01553c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We incorporated temperature sensitive NiPAm with zwitterionic monomers (CBMA and SBMA), synthesized the statistical copolymers poly(NiPAm-co-CBMA) and poly(NiPAm-co-SBMA), and investigated their self-assembly and thermoresponsive properties.
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Affiliation(s)
- Ya Zhao
- Department of Mechanical Engineering
- University of Washington
- Seattle
- USA
| | - Tao Bai
- Department of Chemical Engineering
- University of Washington
- Seattle
- USA
| | - Qing Shao
- Department of Chemical Engineering
- University of Washington
- Seattle
- USA
| | - Shaoyi Jiang
- Department of Chemical Engineering
- University of Washington
- Seattle
- USA
| | - Amy Q. Shen
- Department of Mechanical Engineering
- University of Washington
- Seattle
- USA
- Micro/Bio/Nanofluidics Unit
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26
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Haraguchi K, Kubota K, Takada T, Mahara S. Highly Protein-Resistant Coatings and Suspension Cell Culture Thereon from Amphiphilic Block Copolymers Prepared by RAFT Polymerization. Biomacromolecules 2014; 15:1992-2003. [DOI: 10.1021/bm401914c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kazutoshi Haraguchi
- Material Chemistry
Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba, 285-0078, Japan
- Department
of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Izumi-cho, Narashino, Chiba, 275-8575, Japan
| | - Kazuomi Kubota
- Material Chemistry
Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba, 285-0078, Japan
| | - Tetsuo Takada
- Material Chemistry
Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba, 285-0078, Japan
| | - Saori Mahara
- Material Chemistry
Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba, 285-0078, Japan
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27
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Kermagoret A, Mathieu K, Thomassin JM, Fustin CA, Duchêne R, Jérôme C, Detrembleur C, Debuigne A. Double thermoresponsive di- and triblock copolymers based on N-vinylcaprolactam and N-vinylpyrrolidone: synthesis and comparative study of solution behaviour. Polym Chem 2014. [DOI: 10.1039/c4py00852a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Controlled radical polymerization produces poly(N-vinylamide)s with thermally induced multistep assembly.
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Affiliation(s)
- Anthony Kermagoret
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Kevin Mathieu
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Jean-Michel Thomassin
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université Catholique de Louvain
- 1348 Louvain-la-Neuve, Belgium
| | - Roland Duchêne
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université Catholique de Louvain
- 1348 Louvain-la-Neuve, Belgium
| | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Christophe Detrembleur
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
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28
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Huo F, Gao C, Dan M, Xiao X, Su Y, Zhang W. Seeded dispersion RAFT polymerization and synthesis of well-defined ABA triblock copolymer flower-like nanoparticles. Polym Chem 2014. [DOI: 10.1039/c3py01569f] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Flower-like triblock copolymer nanoparticles containing a central looped solvophilic block and two outer solvophobic blocks are prepared by seeded dispersion RAFT polymerization.
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Affiliation(s)
- Fei Huo
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
| | - Chengqiang Gao
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
| | - Meihan Dan
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
| | - Xin Xiao
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
| | - Yang Su
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
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29
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Gao C, Li S, Li Q, Shi P, Shah SA, Zhang W. Dispersion RAFT polymerization: comparison between the monofunctional and bifunctional macromolecular RAFT agents. Polym Chem 2014. [DOI: 10.1039/c4py01069h] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The dispersion RAFT polymerizations mediated with monofunctional and bifunctional macro-RAFT agents were comparatively studied, in which different block copolymer morphologies were detected.
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Affiliation(s)
- Chengqiang Gao
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, China
| | - Shentong Li
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, China
| | - Quanlong Li
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, China
| | - Pengfei Shi
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, China
| | - Sayyar Ali Shah
- Department of Chemistry
- Tianjin University
- Tianjin 300072, China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, China
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30
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Stars and Blocks: Tailoring Polymeric Rheology Modifiers for Aqueous Media by Controlled Free Radical Polymerization. ACTA ACUST UNITED AC 2013. [DOI: 10.1021/bk-2013-1148.ch008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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31
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Pafiti KS, Patrickios CS, Abetz C, Abetz V. High-molecular-weight symmetrical multiblock copolymers: Synthesis by RAFT polymerization and characterization. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26936] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Kyriaki S. Pafiti
- Department of Chemistry; University of Cyprus; P.O. Box 20537, 1678 Nicosia Cyprus
| | - Costas S. Patrickios
- Department of Chemistry; University of Cyprus; P.O. Box 20537, 1678 Nicosia Cyprus
| | - Clarissa Abetz
- Institute of Polymer Research, Helmholtz-Zentrum Geesthacht; Max-Planck-Str. 1 21502 Geesthacht Germany
| | - Volker Abetz
- Institute of Polymer Research, Helmholtz-Zentrum Geesthacht; Max-Planck-Str. 1 21502 Geesthacht Germany
- Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
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32
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Thermoresponsive gels based on ABA triblock copolymers: Does the asymmetry matter? ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26674] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Bak JM, Lee HI. Novel thermoresponsive fluorinated double-hydrophilic poly{[N-(2,2-difluoroethyl)acrylamide]-b-[N-(2-fluoroethyl)acrylamide]} block copolymers. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26578] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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Ray JG, Johnson AJ, Savin DA. Self-assembly and responsiveness of polypeptide-based block copolymers: How “Smart” behavior and topological complexity yield unique assembly in aqueous media. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23259] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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35
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Jiang X, Lu G, Feng C, Li Y, Huang X. Poly(acrylic acid)-graft-poly(N-vinylcaprolactam): a novel pH and thermo dual-stimuli responsive system. Polym Chem 2013. [DOI: 10.1039/c3py00415e] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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36
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Thermoresponsive and Redox Behaviors of Poly(N-isopropylacrylamide)-Based Block Copolymers Having TEMPO Groups as Their Side Chains. INT J POLYM SCI 2013. [DOI: 10.1155/2013/196145] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Thermoresponsive and redox-active block copolymers having 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) moieties have been synthesized by using the reversible addition-fragmentation chain transfer (RAFT) polymerization technique.N-Isopropylacrylamide (NIPAAm) and 2,2,6,6-tetramethylpiperidyl methacrylate (TEMPMA) monomers were copolymerized stepwise under RAFT polymerization conditions to afford the thermoresponsive block copolymers, PNIPAAm-block-PTEMPMA and PNIPAAm-block-PTEMPMA-block-PNIPAAm. Oxidation of tetramethylpiperidine groups in the copolymers successfully afforded the corresponding TEMPO-containing block copolymers. The resulting triblock copolymer was found to be thermoresponsive showing lower critical solution temperature (LCST) at 34∘C in its aqueous solution. Redox behavior of the resulting copolymer was observed by cyclic voltammetry. The potential of anodic current peak changed below and above the LCST of the block copolymer. These results indicate that the phase transition of thermoresponsive polymer influences the redox potential of TEMPO moieties.
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37
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Miasnikova A, Laschewsky A, De Paoli G, Papadakis CM, Müller-Buschbaum P, Funari SS. Thermoresponsive hydrogels from symmetrical triblock copolymers poly(styrene-block-(methoxy diethylene glycol acrylate)-block-styrene). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4479-4490. [PMID: 22356247 DOI: 10.1021/la204665q] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A series of symmetrical, thermo-responsive triblock copolymers was prepared by reversible addition-fragmentation chain transfer (RAFT) polymerization, and studied in aqueous solution with respect to their ability to form hydrogels. Triblock copolymers were composed of two identical, permanently hydrophobic outer blocks, made of low molar mass polystyrene, and of a hydrophilic inner block of variable length, consisting of poly(methoxy diethylene glycol acrylate) PMDEGA. The polymers exhibited a LCST-type phase transition in the range of 20-40 °C, which markedly depended on molar mass and concentration. Accordingly, the triblock copolymers behaved as amphiphiles at low temperatures, but became water-insoluble at high temperatures. The temperature dependent self-assembly of the amphiphilic block copolymers in aqueous solution was studied by turbidimetry and rheology at concentrations up to 30 wt %, to elucidate the impact of the inner thermoresponsive block on the gel properties. Additionally, small-angle X-ray scattering (SAXS) was performed to access the structural changes in the gel with temperature. For all polymers a gel phase was obtained at low temperatures, which underwent a gel-sol transition at intermediate temperatures, well below the cloud point where phase separation occurred. With increasing length of the PMDEGA inner block, the gel-sol transition shifts to markedly lower concentrations, as well as to higher transition temperatures. For the longest PMDEGA block studied (DP(n) about 450), gels had already formed at 3.5 wt % at low temperatures. The gel-sol transition of the hydrogels and the LCST-type phase transition of the hydrophilic inner block were found to be independent of each other.
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Affiliation(s)
- Anna Miasnikova
- Department of Chemistry, Universität Potsdam, Potsdam-Golm, Germany
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38
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Gregory A, Stenzel MH. Complex polymer architectures via RAFT polymerization: From fundamental process to extending the scope using click chemistry and nature's building blocks. Prog Polym Sci 2012. [DOI: 10.1016/j.progpolymsci.2011.08.004] [Citation(s) in RCA: 377] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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39
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Moad G, Rizzardo E, Thang SH. Living Radical Polymerization by the RAFT Process – A Third Update. Aust J Chem 2012. [DOI: 10.1071/ch12295] [Citation(s) in RCA: 825] [Impact Index Per Article: 68.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This paper provides a third update to the review of reversible deactivation radical polymerization (RDRP) achieved with thiocarbonylthio compounds (ZC(=S)SR) by a mechanism of reversible addition-fragmentation chain transfer (RAFT) that was published in June 2005 (Aust. J. Chem. 2005, 58, 379). The first update was published in November 2006 (Aust. J. Chem. 2006, 59, 669) and the second in December 2009 (Aust. J. Chem. 2009, 62, 1402). This review cites over 700 publications that appeared during the period mid 2009 to early 2012 covering various aspects of RAFT polymerization which include reagent synthesis and properties, kinetics and mechanism of polymerization, novel polymer syntheses, and a diverse range of applications. This period has witnessed further significant developments, particularly in the areas of novel RAFT agents, techniques for end-group transformation, the production of micro/nanoparticles and modified surfaces, and biopolymer conjugates both for therapeutic and diagnostic applications.
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40
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Herfurth C, Malo de Molina P, Wieland C, Rogers S, Gradzielski M, Laschewsky A. One-step RAFT synthesis of well-defined amphiphilic star polymers and their self-assembly in aqueous solution. Polym Chem 2012. [DOI: 10.1039/c2py20126g] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Herfurth C, Voll D, Buller J, Weiss J, Barner-Kowollik C, Laschewsky A. Radical addition fragmentation chain transfer (RAFT) polymerization of ferrocenyl (Meth)acrylates. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24994] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Weiss J, Laschewsky A. Temperature-induced self-assembly of triple-responsive triblock copolymers in aqueous solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4465-4473. [PMID: 21391656 DOI: 10.1021/la200115p] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A series of triple-thermoresponsive triblock copolymers from poly(N-n-propylacrylamide) (PNPAM, A), poly(methoxydiethylene glycol acrylate) (PMDEGA, B), and poly(N-ethylacrylamide) (PNEAM, C) was synthesized by sequential reversible addition-fragmentation chain transfer polymerizations. Polymers of differing block sequences, ABC, BAC, and ACB, with increasing phase transition temperatures in the order A < B < C were prepared. Their aggregation behavior in dilute aqueous solution was investigated using dynamic light scattering, turbidimetry, and NMR spectroscopy. The self-organization of such polymers was found to dependent strongly on the block sequence. While polymers with a terminal low-LCST (lower critical solution temperature) block undergo aggregation above the first phase transition temperature at 20-25 °C, triblock copolymers with the low-LCST block in the middle show aggregation only above the second phase transition. The collapse of the middle block is not sufficient to induce aggregation but produces instead stable, unimolecular micelles with a collapsed middle block, as supported by NMR and fluorescence probe data. Continued heating of all copolymers led to two additional thermal transitions at 40-55 and 70-80 °C, which could be correlated to the phase transitions of the B and C blocks, respectively. All polymers show a high tendency for cluster formation, once aggregation is induced. The carrier abilities of the triple responsive triblock copolymers for hydrophobic agents were probed with the solvatochromic fluorescence dye Nile Red. With passing through the first thermal transition, the block copolymers are capable of solubilizing Nile Red. In the case of block copolymers with sequences ABC or ACB, which bear the low-LCST block at one terminus, notable amounts of dye are solubilized already at this stage. In contrast, the hydrophobic probe is much less efficiently incorporated by the BAC triblock copolymer, which forms unimolecular micelles. Only after the collapse of the B block, when reaching the second phase transition at about 45 °C, does aggregation occur and solubilization becomes efficient. In the case of ABC and ACB polymers, the hydrophobic probe seems to partition between the originally collapsed A chains and the additional hydrophobic chains formed after the collapse of the less hydrophobic B block.
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Affiliation(s)
- Jan Weiss
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam-Golm, Germany
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Skrabania K, Miasnikova A, Bivigou-Koumba AM, Zehm D, Laschewsky A. Examining the UV-vis absorption of RAFT chain transfer agents and their use for polymer analysis. Polym Chem 2011. [DOI: 10.1039/c1py00173f] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Päch M, Zehm D, Lange M, Dambowsky I, Weiss J, Laschewsky A. Universal Polymer Analysis by 1H NMR Using Complementary Trimethylsilyl End Groups. J Am Chem Soc 2010; 132:8757-65. [DOI: 10.1021/ja102096u] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael Päch
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - Daniel Zehm
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - Maik Lange
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - Ina Dambowsky
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - Jan Weiss
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - André Laschewsky
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
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Bivigou-Koumba AM, Görnitz E, Laschewsky A, Müller-Buschbaum P, Papadakis CM. Thermoresponsive amphiphilic symmetrical triblock copolymers with a hydrophilic middle block made of poly(N-isopropylacrylamide): synthesis, self-organization, and hydrogel formation. Colloid Polym Sci 2010. [DOI: 10.1007/s00396-009-2179-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Feng C, Li Y, Yang D, Li Y, Hu J, Zhai S, Lu G, Huang X. Synthesis of well-defined PNIPAM-b
-(PEA-g
-P2VP) double hydrophilic graft copolymer via sequential SET-LRP and ATRP and its “schizophrenic” Micellization behavior in aqueous media. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23716] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Skrabania K, Berlepsch HV, Böttcher C, Laschewsky A. Synthesis of Ternary, Hydrophilic−Lipophilic−Fluorophilic Block Copolymers by Consecutive RAFT Polymerizations and Their Self-Assembly into Multicompartment Micelles. Macromolecules 2009. [DOI: 10.1021/ma901913f] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Katja Skrabania
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam-Golm, Germany
| | - Hans v. Berlepsch
- Forschungszentrum für Elektronenmikroskopie, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstr. 36a, D-14195 Berlin, Germany
| | - Christoph Böttcher
- Forschungszentrum für Elektronenmikroskopie, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstr. 36a, D-14195 Berlin, Germany
| | - André Laschewsky
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam-Golm, Germany
- Fraunhofer Institute for Applied Polymer Research, D-14476 Potsdam-Golm, Germany
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Patrizi ML, Piantanida G, Coluzza C, Masci G. ATRP synthesis and association properties of temperature responsive dextran copolymers grafted with poly(N-isopropylacrylamide). Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.07.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Bivigou-Koumba AM, Kristen J, Laschewsky A, Müller-Buschbaum P, Papadakis CM. Synthesis of Symmetrical Triblock Copolymers of Styrene andN-isopropylacrylamide Using Bifunctional Bis(trithiocarbonate)s as RAFT Agents. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200800575] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Dai F, Tang L, Yang J, Zhao X, Liu W, Chen G, Xiao F, Feng X. Fast thermoresponsive BAB-type HEMA/NIPAAm triblock copolymer solutions for embolization of abnormal blood vessels. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2009; 20:967-974. [PMID: 19020956 DOI: 10.1007/s10856-008-3632-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2008] [Accepted: 10/16/2008] [Indexed: 05/27/2023]
Abstract
Thermoresponsive BAB-type HEMA/NIPAAm triblock copolymers (A = NIPAAm, B = HEMA) were prepared by atomic transfer radical polymerization (ATRP). BAB1-6 with shorter PNIPAAm blocks failed to form stable gel; while a relatively stable gel could be achieved by BAB1-8 with longer PNIPAAm blocks when copolymer aqueous solution was heated up. Introducing radiopaque agent (RA) was shown to slightly increase the transition temperature and gelation time, but the gelling ability was strengthened due to slightly weakening dehydration of copolymer in the mixture of water and RA. BAB1-8 aqueous solution about 5 wt% in the presence of RA was demonstrated to successfully occlude the cerebral rete mirabiles (RMs) and renal arteries of pigs. Within 3-month surgery, no recanalization was observed and the embolized kidney shrank considerably. Histological assay of embolized kidney demonstrated interstitial fibrosis and calcification as well as the thickening of renal small artery. This temperature sensitive copolymer with well-defined architecture holds a great potential as an embolic agent for treating arteriovenous malformations (AVMs) and renal disease due to the design flexibility of ATRP.
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Affiliation(s)
- Fengying Dai
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
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