1
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Parkinson SJ, Fielden SDP, Thomas M, Miller AJ, Topham PD, Derry MJ, O’Reilly RK. Harnessing Cytosine for Tunable Nanoparticle Self-Assembly Behavior Using Orthogonal Stimuli. Biomacromolecules 2024; 25:4905-4912. [PMID: 39008804 PMCID: PMC11323014 DOI: 10.1021/acs.biomac.4c00352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 07/17/2024]
Abstract
Nucleobases control the assembly of DNA, RNA, etc. due to hydrogen bond complementarity. By combining these unique molecules with state-of-the-art synthetic polymers, it is possible to form nanoparticles whose self-assembly behavior could be altered under orthogonal stimuli (pH and temperature). Herein, we report the synthesis of cytosine-containing nanoparticles via aqueous reversible addition-fragmentation chain transfer polymerization-induced self-assembly. A poly(N-acryloylmorpholine) macromolecular chain transfer agent (mCTA) was chain-extended with cytosine acrylamide, and a morphological phase diagram was constructed. By exploiting the ability of cytosine to form dimers via hydrogen bonding, the self-assembly behavior of cytosine-containing polymers was altered when performed under acidic conditions. Under these conditions, stable nanoparticles could be formed at longer polymer chain lengths. Furthermore, the resulting nanoparticles displayed different morphologies compared to those at pH 7. Additionally, particle stability post-assembly could be controlled by varying pH and temperature. Finally, small-angle X-ray scattering was performed to probe their dynamic behavior under thermal cycling.
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Affiliation(s)
- Sam J. Parkinson
- School
of Chemistry, University of Birmingham, Birmingham, Edgbaston B15 2TT, United
Kingdom
| | - Stephen D. P. Fielden
- School
of Chemistry, University of Birmingham, Birmingham, Edgbaston B15 2TT, United
Kingdom
| | - Marjolaine Thomas
- School
of Chemistry, University of Birmingham, Birmingham, Edgbaston B15 2TT, United
Kingdom
| | - Alisha J. Miller
- School
of Chemistry, University of Birmingham, Birmingham, Edgbaston B15 2TT, United
Kingdom
| | - Paul D. Topham
- Aston
Institute for Membrane Excellence, Aston
University, Birmingham B4 7ET, United
Kingdom
| | - Matthew J. Derry
- Aston
Institute for Membrane Excellence, Aston
University, Birmingham B4 7ET, United
Kingdom
| | - Rachel K. O’Reilly
- School
of Chemistry, University of Birmingham, Birmingham, Edgbaston B15 2TT, United
Kingdom
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2
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Chellali JE, Woodside AJ, Yu Z, Neogi S, Külaots I, Guduru PR, Robinson JR. Access to Stereoblock Polyesters via Irreversible Chain-Transfer Ring-Opening Polymerization (ICT-ROP). J Am Chem Soc 2024. [PMID: 38593434 DOI: 10.1021/jacs.4c02976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Precise control over polymer microstructure can enable the molecular tunability of material properties and represents a significant challenge in polymer chemistry. Stereoblock copolymers are some of the simplest stereosequenced polymers, yet the synthesis of stereoblock polyesters from prochiral or racemic monomers outside of "simple" isotactic stereoblocks remains limited. Herein, we report the development of irreversible chain-transfer ring-opening polymerization (ICT-ROP), which overcomes the fundamental limitations of single catalyst approaches by using transmetalation (e.g., alkoxide-chloride exchange) between two catalysts with distinct stereoselectivities as a means to embed temporally controlled multicatalysis in ROP. Our combined small-molecule model and catalytic polymerization studies lay out a clear molecular basis for ICT-ROP and are exploited to access the first examples of atactic-syndiotactic stereoblock (at-sb-st) polyesters, at-sb-st polyhydroxyalkanoates (PHAs). We achieve high levels of control over molecular weight, tacticity, monomer composition, and block structures in a temporally controlled manner and demonstrate that stereosequence control leads to polymer tensile properties that are independent of thermal properties.
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Affiliation(s)
- Jonathan E Chellali
- Department of Chemistry, Brown University, 324 Brook St., Providence, Rhode Island 02912, United States
| | - Audra J Woodside
- Department of Chemistry, Brown University, 324 Brook St., Providence, Rhode Island 02912, United States
| | - Ziyan Yu
- Department of Chemistry, Brown University, 324 Brook St., Providence, Rhode Island 02912, United States
| | - Srijan Neogi
- School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Indrek Külaots
- School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Pradeep R Guduru
- School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Jerome R Robinson
- Department of Chemistry, Brown University, 324 Brook St., Providence, Rhode Island 02912, United States
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3
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Pan Y, Ouchi M. Stereospecific Radical Polymerization of a Side-Chain Transformable Bulky Acrylamide Monomer and Subsequent Post-Polymerization Modification for Syntheses of Isotactic Polyacrylate and Polyacrylamide. Angew Chem Int Ed Engl 2023; 62:e202308855. [PMID: 37395737 DOI: 10.1002/anie.202308855] [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: 06/23/2023] [Revised: 07/03/2023] [Accepted: 07/03/2023] [Indexed: 07/04/2023]
Abstract
We report syntheses of isotactic polyacrylate and polyacrylamide via a stereospecific radical polymerization of a pendant-transformable monomer, acrylamide carrying isopropyl-substituted ureidosulfonamide (1), followed by post-polymerization modification (PPM). The study in the alcoholysis and aminolysis reactions of the model compound (2) for evaluation of the transformation ability of the electron-withdrawing pendant group on the repeating unit 1 revealed the following points: the pendant of the polymer became more reactive than that of monomer; the pendant was active enough for aminolysis reaction affording the amide compound quantitatively without additive/catalyst; the addition of a lithium triflate [Li(OTf)] and triethylamine (Et3 N) was effective as for promotion of the alcoholysis reaction. Poly(methyl acrylate) (PMA) was quantitatively obtained via the radical polymerization of 1 in the presence of Li(OTf) at 60 °C and the subsequent addition of methanol along with Et3 N. Thus-obtained PMA showed higher isotacticity [m=74 %] than that directly obtained via radical polymerization of methyl acrylate (MA) (m=51 %). The isotacticity was further increased as the temperature and monomer concentration were lower, and eventually m was increased up to 93 %. The aminolysis PPM after the iso-specific radical polymerization of 1 gave various isotactic polyacrylamides carrying different alkyl pendant groups, including poly(N-isopropylacrylamide) (PNIPAM).
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Affiliation(s)
- Yuehang Pan
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Makoto Ouchi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
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4
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Yan Y, Fang X, Yao N, Gu H, Yang G, Hua Z. Bioinspired Hydrogen Bonds of Nucleobases Enable Programmable Morphological Transformations of Mixed Nanostructures. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yangyang Yan
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Xinzi Fang
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Nan Yao
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Haojie Gu
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Guang Yang
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Zan Hua
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
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5
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Yan Y, Gao C, Li J, Zhang T, Yang G, Wang Z, Hua Z. Modulating Morphologies and Surface Properties of Nanoparticles from Cellulose-Grafted Bottlebrush Copolymers Using Complementary Hydrogen-Bonding between Nucleobases. Biomacromolecules 2020; 21:613-620. [PMID: 31841316 DOI: 10.1021/acs.biomac.9b01345] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Herein we report the synthesis of a cellulose-grafted bottlebrush copolymer with nucleobases as hydrophobic moieties. Well-defined spherical micelles from this bottlebrush copolymer were fabricated via a solvent switch method. A morphological transition from spheres to worms was only observed to occur when a diblock copolymer with a complementary nucleobase functionality was introduced. Hydrophobic interaction is not capable of triggering the morphological transformation, and the diblock copolymer with the heterogeneous acrylamide nucleobase monomer can induce the morphological transition at higher A:T molar ratios, which might be caused by the weak H-bonding interaction. This supramolecular "grafting to" method enables the preparation of a series of nanoparticles with similar shapes and dimensions but distinct surface properties such as zeta potentials. Moreover, reversible morphological transitions between worm-like micelles and spheres can be achieved using a reversible collapsing and swelling of a thermoresponsive polymer. This work highlights that a supramolecular "grafting to" approach between complementary nucleobases can be utilized to tune morphologies and surface properties of nanoparticles.
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6
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Wang M, Choi B, Sun Z, Wei X, Feng A, Thang SH. Spindle-like and telophase-like self-assemblies mediated by complementary nucleobase molecular recognition. Chem Commun (Camb) 2019; 55:1462-1465. [DOI: 10.1039/c8cc09923e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Supramolecular nanoparticles based on complementary nucleobase interactions have aroused wide interest.
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Affiliation(s)
- Mu Wang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Bonnie Choi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Zhonghe Sun
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Xiaohu Wei
- State Key Laboratory of Special Functional Waterproof Materials
- Beijing Oriental Yuhong Waterproof Technology Co
- Ltd
- Beijing 100123
- China
| | - Anchao Feng
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - San H. Thang
- School of Chemistry
- Monash University
- Clayton Campus
- VIC 3800
- Australia
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7
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Hua Z, Keogh R, Li Z, Wilks TR, Chen G, O’Reilly RK. Reversibly Manipulating the Surface Chemistry of Polymeric Nanostructures via a "Grafting To" Approach Mediated by Nucleobase Interactions. Macromolecules 2017; 50:3662-3670. [PMID: 28529382 PMCID: PMC5435456 DOI: 10.1021/acs.macromol.7b00286] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/22/2017] [Indexed: 12/13/2022]
Abstract
"Grafting to" polymeric nanostructures or surfaces is a simple and versatile approach to achieve functionalization. Herein, we describe the formation of mixed polymer-grafted nanoparticles through a supramolecular "grafting to" method that exploits multiple hydrogen-bonding interactions between the thymine (T)-containing cores of preformed micelles and the complementary nucleobase adenine (A) of added diblock copolymers. To demonstrate this new "grafting to" approach, mixed-corona polymeric nanoparticles with different sizes were prepared by the addition of a series of complementary diblock copolymers containing thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) to a preformed micelle with a different coronal forming block, poly(4-acryloylmorpholine) (PNAM). PNIPAM chains were distributed throughout the corona and facilitated a fast and fully reversible size change of the resulting mixed-corona micelles upon heating. Through the introduction of an environmentally sensitive fluorophore, the reversible changes in nanoparticle size and coronal composition could be easily probed. Furthermore, preparation of mixed-corona micelles also enabled ligands, such as d-mannose, to be concealed and displayed on the micelle surface. This supramolecular "grafting to" approach provides a straightforward route to fabricate highly functionalized mixed polymeric nanostructures or surfaces with potential applications in targeted diagnosis or therapy and responsive surfaces.
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Affiliation(s)
- Zan Hua
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Robert Keogh
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Zhen Li
- The
State Key Laboratory of Molecular Engineering of Polymers and Department
of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Thomas R. Wilks
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Guosong Chen
- The
State Key Laboratory of Molecular Engineering of Polymers and Department
of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Rachel K. O’Reilly
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
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8
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Hua Z, Pitto-Barry A, Kang Y, Kirby N, Wilks TR, O'Reilly RK. Micellar nanoparticles with tuneable morphologies through interactions between nucleobase-containing synthetic polymers in aqueous solution. Polym Chem 2016. [DOI: 10.1039/c6py00716c] [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
Herein, we report the preparation of nucleobase-containing synthetic amphiphilic diblock copolymers using RAFT polymerization.
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Affiliation(s)
- Zan Hua
- Department of Chemistry
- University of Warwick
- Coventry
- UK
| | | | - Yan Kang
- Department of Chemistry
- University of Warwick
- Coventry
- UK
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9
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Zhang K, Fahs GB, Aiba M, Moore RB, Long TE. Nucleobase-functionalized ABC triblock copolymers: self-assembly of supramolecular architectures. Chem Commun (Camb) 2015; 50:9145-8. [PMID: 24984613 DOI: 10.1039/c4cc03363a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
RAFT polymerization afforded acrylic ABC triblock copolymers with self-complementary nucleobase-functionalized external blocks and a low-Tg soft central block. ABC triblock copolymers self-assembled into well-defined lamellar microphase-separated morphologies for potential applications as thermoplastic elastomers. Complementary hydrogen bonding within the hard phase facilitated self-assembly and enhanced mechanical performance.
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Affiliation(s)
- Keren Zhang
- Department of Chemistry, Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, VA 24061, USA.
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10
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Kang Y, Pitto-Barry A, Willcock H, Quan WD, Kirby N, Sanchez AM, O'Reilly RK. Exploiting nucleobase-containing materials – from monomers to complex morphologies using RAFT dispersion polymerization. Polym Chem 2015. [DOI: 10.1039/c4py01074d] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The synthesis of nucleobase-containing polymers was successfully performed by RAFT dispersion polymerization in both chloroform and 1,4-dioxane and self-assembly was induced by the polymerizations.
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Affiliation(s)
- Yan Kang
- Department of Chemistry
- University of Warwick
- Coventry
- UK
| | | | | | - Wen-Dong Quan
- Department of Chemistry
- University of Warwick
- Coventry
- UK
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11
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Kang Y, Pitto-Barry A, Maitland A, O'Reilly RK. RAFT dispersion polymerization: a method to tune the morphology of thymine-containing self-assemblies. Polym Chem 2015. [DOI: 10.1039/c5py00617a] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The synthesis and self-assembly of thymine-containing polymers were performed using RAFT dispersion polymerization.
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Affiliation(s)
- Yan Kang
- Department of Chemistry
- University of Warwick
- Coventry
- UK
| | | | - Anna Maitland
- Department of Chemistry
- University of Warwick
- Coventry
- UK
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12
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Zhang K, Aiba M, Fahs GB, Hudson AG, Chiang WD, Moore RB, Ueda M, Long TE. Nucleobase-functionalized acrylic ABA triblock copolymers and supramolecular blends. Polym Chem 2015. [DOI: 10.1039/c4py01798f] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The supramolecular blend of complementary nucleobase-functionalized ABA triblock copolymers self-assemble into a microphase-separated morphology with enhanced mechanical performance and thermal responsiveness.
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Affiliation(s)
- Keren Zhang
- Department of Chemistry
- Macromolecules and Interfaces Institute
- Virginia Tech
- Blacksburg
- USA
| | - Motohiro Aiba
- Department of Organic and Polymeric Materials
- Graduate School of Science and Engineering
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Gregory B. Fahs
- Department of Chemistry
- Macromolecules and Interfaces Institute
- Virginia Tech
- Blacksburg
- USA
| | - Amanda G. Hudson
- Department of Chemistry
- Macromolecules and Interfaces Institute
- Virginia Tech
- Blacksburg
- USA
| | - William D. Chiang
- Department of Chemistry
- Macromolecules and Interfaces Institute
- Virginia Tech
- Blacksburg
- USA
| | - Robert B. Moore
- Department of Chemistry
- Macromolecules and Interfaces Institute
- Virginia Tech
- Blacksburg
- USA
| | - Mitsuru Ueda
- Department of Organic and Polymeric Materials
- Graduate School of Science and Engineering
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Timothy E. Long
- Department of Chemistry
- Macromolecules and Interfaces Institute
- Virginia Tech
- Blacksburg
- USA
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13
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Kang Y, Lu A, Ellington A, Jewett MC, O’Reilly RK. Effect of Complementary Nucleobase Interactions on the Copolymer Composition of RAFT Copolymerizations. ACS Macro Lett 2013; 2:581-586. [PMID: 35581785 DOI: 10.1021/mz4001833] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Methacryloyl-type monomers containing adenine and thymine have been successfully synthesized with good yields. The homopolymerization and copolymerization of these two new functional monomers were carried out using RAFT polymerization. The reactivity ratios of monomer pairs were measured and calculated using a nonlinear least-squares (NLLS) method, and the results confirmed that the monomer reactivities were dependent on the solvent used for polymerization. The presence and absence of hydrogen bonding affected the resultant copolymer composition where moderate alternating copolymers had a tendency to be formed in CHCl3, while in DMF, statistical copolymers were formed. Furthermore, the glass transition temperatures of the copolymers were investigated, and the self-assembly of block copolymers made in solvents with different polarity were studied.
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Affiliation(s)
- Yan Kang
- Department of Chemistry, University of Warwick, Library Road,
Coventry, CV4 7AL, United Kingdom
| | - Annhelen Lu
- Department of Chemistry, University of Warwick, Library Road,
Coventry, CV4 7AL, United Kingdom
| | - Andrew Ellington
- Chemistry and Biochemistry
Department, The University of Texas at Austin, Austin, Texas 78712-0165, United States
| | - Michael C. Jewett
- Department of Chemical
and Biological Engineering, Northwestern University, Evanston, Illinois 60208-3120, United States
| | - Rachel K. O’Reilly
- Department of Chemistry, University of Warwick, Library Road,
Coventry, CV4 7AL, United Kingdom
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14
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Banerjee S, Paira TK, Mandal TK. Control of Molecular Weight and Tacticity in Stereospecific Living Cationic Polymerization of α-Methylstyrene at 0 °C Using FeCl3
-Based Initiators: Effect of Tacticity on Thermal Properties. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300092] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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McHale R, O’Reilly RK. Nucleobase Containing Synthetic Polymers: Advancing Biomimicry via Controlled Synthesis and Self-Assembly. Macromolecules 2012. [DOI: 10.1021/ma300895u] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ronan McHale
- Department of Chemistry, Library Rd., University of Warwick, Coventry, U.K. CV4 7AL
| | - Rachel K. O’Reilly
- Department of Chemistry, Library Rd., University of Warwick, Coventry, U.K. CV4 7AL
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16
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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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17
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Ishitake K, Satoh K, Kamigaito M, Okamoto Y. From-syndiotactic-to-isotactic stereogradient methacrylic polymers by RAFT copolymerization of methacrylic acid and its bulky esters. Polym Chem 2012. [DOI: 10.1039/c1py00401h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Hemp ST, Long TE. DNA-Inspired Hierarchical Polymer Design: Electrostatics and Hydrogen Bonding in Concert. Macromol Biosci 2011; 12:29-39. [DOI: 10.1002/mabi.201100355] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 10/16/2011] [Indexed: 11/08/2022]
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19
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Ishitake K, Satoh K, Kamigaito M, Okamoto Y. Stereospecific Free Radical and RAFT Polymerization of Bulky Silyl Methacrylates for Tacticity and Molecular Weight Controlled Poly(methacrylic acid). Macromolecules 2011. [DOI: 10.1021/ma202155b] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenji Ishitake
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Kotaro Satoh
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Masami Kamigaito
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yoshio Okamoto
- Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- College of Material Science and Chemical Engineering, Harbin Engineering University, Nantong St. Harbin, P. R. China
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