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Kim EJ, Shin JJ, Lee GS, Kim S, Park S, Park J, Choe Y, Lee D, Choi J, Bang J, Kim YH, Li S, Hur SM, Kim JG, Kim BJ. Synthesis and Self-Assembly of Poly(vinylpyridine)-Containing Brush Block Copolymers: Combined Synthesis of Grafting-Through and Grafting-to Approaches. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eun Ji Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jaeman J. Shin
- Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul 06978, Republic of Korea
| | - Gue Seon Lee
- Department of Chemistry and Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Sejong Kim
- Department of Chemistry and Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Sora Park
- Department of Chemistry and Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Juhae Park
- Alan G. MacDiarmid Energy Research Institute & School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Yeojin Choe
- Alan G. MacDiarmid Energy Research Institute & School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Dahye Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jinwoong Choi
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Joona Bang
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Young Hun Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sheng Li
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Su-Mi Hur
- Alan G. MacDiarmid Energy Research Institute & School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jeung Gon Kim
- Department of Chemistry and Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Bumjoon J. Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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Wessels MG, Jayaraman A. Self-assembly of amphiphilic polymers of varying architectures near attractive surfaces. SOFT MATTER 2020; 16:623-633. [PMID: 31808757 DOI: 10.1039/c9sm02104c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We use coarse-grained molecular dynamics simulations to investigate the assembly of A-B amphiphilic polymers near/on surfaces as a function of polymer architecture and surface attraction to the solvophobic B-block in the polymer. We study four polymer architectures: linear, bottlebrush with a backbone that is longer than each of the side chains, bottlebrush where the solvophobic backbone is similar in length to each of the side chains, and 'star-like' architectures where the backbone is significantly shorter than the side chain lengths. For each architecture and surface-B attraction, we quantify the assembled aggregate structure (i.e., aggregation number, domain shapes and sizes) and the chain conformations (i.e., components of the chain radius of gyration) on and away from the surface. For all the architectures and surface-B attraction strengths, the assembled structure away from the surface is similar to the assembly observed in bulk systems without surfaces. Near/on the surface, the assembled B-blocks form domains whose shapes and sizes are dependent on the surface-B attraction strength and the ability of the B-block in the polymer architecture to change conformations and pack on the surface. Domain sizes formed from linear and 'star-like' polymer architectures show the highest sensitivity to surface-B-block attraction strength, transitioning from hemispherical to disordered domains with increasing attraction strength. In contrast, bottlebrushes with long backbones and short side chains transition from hemispherical to striped to continuous domains with increasing surface-B attraction strength. Bottlebrushes with similar solvophobic backbone and side chain lengths form hemispherical domains that do not change significantly with the surface-B-block attraction strength. These computational results can guide experimentalists in their choices of surface chemistry and polymer architecture to achieve desired assembled domain shapes and sizes on the surface.
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Affiliation(s)
- Michiel G Wessels
- Colburn Laboratory, Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, DE 19716, USA.
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Le AN, Liang R, Zhong M. Synthesis and Self‐Assembly of Mixed‐Graft Block Copolymers. Chemistry 2019; 25:8177-8189. [DOI: 10.1002/chem.201900520] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Indexed: 11/12/2022]
Affiliation(s)
- An N. Le
- Department of Chemical and Environmental EngineeringYale University New Haven CT 06511 USA
| | - Ruiqi Liang
- Department of Chemical and Environmental EngineeringYale University New Haven CT 06511 USA
| | - Mingjiang Zhong
- Department of Chemical and Environmental EngineeringYale University New Haven CT 06511 USA
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Song J, Wei Y, Hu J, Liu G, Huang Z, Lin S, Liu F, Mo Y, Tu Y, Ou M. pH-Responsive Porous Nanocapsules for Controlled Release. Chemistry 2017; 24:212-221. [DOI: 10.1002/chem.201704328] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Jun Song
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- The University of the Chinese Academy of Science; Beijing 100039 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
| | - Yanlong Wei
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- The University of the Chinese Academy of Science; Beijing 100039 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
| | - Jiwen Hu
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- The University of the Chinese Academy of Science; Beijing 100039 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
| | - Guojun Liu
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
- Department of Chemistry; Queen's University; 90 Bader Lane Kingston Ontario K7L 3N6 Canada
| | - Zhengzhu Huang
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- The University of the Chinese Academy of Science; Beijing 100039 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
| | - Shudong Lin
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- The University of the Chinese Academy of Science; Beijing 100039 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
| | - Feng Liu
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- The University of the Chinese Academy of Science; Beijing 100039 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
| | - Yangmiao Mo
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- The University of the Chinese Academy of Science; Beijing 100039 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
| | - Yuanyuan Tu
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- The University of the Chinese Academy of Science; Beijing 100039 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
| | - Ming Ou
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 P. R. China
- The University of the Chinese Academy of Science; Beijing 100039 P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 P. R. China
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Mo Y, Liu G, Tu Y, Lin S, Song J, Hu J, Liu F. Morphological switching of unimolecular micelles of ternary graft copolymers in different solvents. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28462] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yangmiao Mo
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- The University of the Chinese Academy of Science; Beijing 100039 People's Republic of China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 People's Republic of China
| | - Guojun Liu
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- The University of the Chinese Academy of Science; Beijing 100039 People's Republic of China
- Department of Chemistry; Queen's University; 90 Bader Lane Kingston Ontario Canada K7L 3N6
| | - Yuanyuan Tu
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 People's Republic of China
| | - Shudong Lin
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- The University of the Chinese Academy of Science; Beijing 100039 People's Republic of China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 People's Republic of China
| | - Jun Song
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- The University of the Chinese Academy of Science; Beijing 100039 People's Republic of China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 People's Republic of China
| | - Jiwen Hu
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- The University of the Chinese Academy of Science; Beijing 100039 People's Republic of China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; Guangzhou 510650 People's Republic of China
| | - Feng Liu
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences; Guangzhou 510650 People's Republic of China
- The University of the Chinese Academy of Science; Beijing 100039 People's Republic of China
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Gan W, Shi Y, Jing B, Cao X, Zhu Y, Gao H. Produce Molecular Brushes with Ultrahigh Grafting Density Using Accelerated CuAAC Grafting-Onto Strategy. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b02388] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Weiping Gan
- Department
of Department of Chemistry and Biochemistry, University of Notre Dame, Notre
Dame, Indiana 46556, United States
| | - Yi Shi
- Department
of Department of Chemistry and Biochemistry, University of Notre Dame, Notre
Dame, Indiana 46556, United States
| | - Benxin Jing
- Department
of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Xiaosong Cao
- Department
of Department of Chemistry and Biochemistry, University of Notre Dame, Notre
Dame, Indiana 46556, United States
| | - Yingxi Zhu
- Department
of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Haifeng Gao
- Department
of Department of Chemistry and Biochemistry, University of Notre Dame, Notre
Dame, Indiana 46556, United States
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Cylindrical polymer brushes – Anisotropic building blocks, unimolecular templates and particulate nanocarriers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.03.076] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Shi Y, Cao X, Gao H. The use of azide-alkyne click chemistry in recent syntheses and applications of polytriazole-based nanostructured polymers. NANOSCALE 2016; 8:4864-4881. [PMID: 26879290 DOI: 10.1039/c5nr09122e] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The rapid development of efficient organic click coupling reactions has significantly facilitated the construction of synthetic polymers with sophisticated branched nanostructures. This Feature Article summarizes the recent progress in the application of efficient copper-catalyzed and copper-free azide-alkyne cycloaddition (CuAAC and CuFAAC) reactions in the syntheses of dendrimers, hyperbranched polymers, star polymers, graft polymers, molecular brushes, and cyclic graft polymers. Literature reports on the interesting properties and functions of these polytriazole-based nanostructured polymers are also discussed to illustrate their potential applications as self-healing polymers, adhesives, polymer catalysts, opto-electronic polymer materials and polymer carriers for drug and imaging molecules.
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Affiliation(s)
- Yi Shi
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA.
| | - Xiaosong Cao
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA.
| | - Haifeng Gao
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA.
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Wang Q, Ma H, Sang W, Han L, Liu P, Shen H, Huang W, Gong X, Yang L, Wang Y, Li Y. Synthesis of sequence-determined bottlebrush polymers based on sequence determination in living anionic copolymerization of styrene and dimethyl(4-(1-phenylvinyl)phenyl)silane. Polym Chem 2016. [DOI: 10.1039/c6py00085a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Sequence-determined bottlebrush polymers are precisely, efficiently and conveniently synthesized.
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Li M, Liu C, Hong CY, Pan CY. Synthesis of graft copolymer with pendant macrocycles via combination of ATRP and click chemistry. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.06.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Verduzco R, Li X, Pesek SL, Stein GE. Structure, function, self-assembly, and applications of bottlebrush copolymers. Chem Soc Rev 2015; 44:2405-20. [PMID: 25688538 DOI: 10.1039/c4cs00329b] [Citation(s) in RCA: 430] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bottlebrush polymers are a type of branched or graft polymer with polymeric side-chains attached to a linear backbone, and the unusual architectures of bottlebrushes provide a number of unique and potentially useful properties. These include a high entanglement molecular weight, enabling rapid self-assembly of bottlebrush block copolymers into large domain structures, the self-assembly of bottlebrush block copolymer micelles in a selective solvent even at very low dilutions, and the functionalization of bottlebrush side-chains for recognition, imaging, or drug delivery in aqueous environments. This review article focuses on recent developments in the field of bottlebrush polymers with an emphasis on applications of bottlebrush copolymers. Bottlebrush copolymers contain two (or more) different types of polymeric side-chains. Recent work has explored the diverse properties and functions of bottlebrush polymers and copolymers in solutions, films, and melts, and applications explored include photonic materials, bottlebrush films for lithographic patterning, drug delivery, and tumor detection and imaging. We provide a brief introduction to bottlebrush synthesis and physical properties and then discuss work related to: (i) bottlebrush self-assembly in melts and bulk thin films, (ii) bottlebrushes for photonics and lithography, (iii) bottlebrushes for small molecule encapsulation and delivery in solution, and (iv) bottlebrush micelles and assemblies in solution. We briefly discuss three potential areas for future research, including developing a more quantitative model of bottlebrush self-assembly in the bulk, studying the properties of bottlebrushes at interfaces, and investigating the solution assembly of bottlebrush copolymers.
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Affiliation(s)
- Rafael Verduzco
- Department of Chemical and Biomolecular Engineering, William Marsh Rice University, 6100 Main Street, MS-362, Houston, TX 77005, USA.
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Xie Y, Tayouo R, Nunes SP. Low fouling polysulfone ultrafiltration membrane via click chemistry. J Appl Polym Sci 2014. [DOI: 10.1002/app.41549] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yihui Xie
- Water Desalination and Reuse Center, King Abdullah University of Science and Technology (KAUST); Kingdom of Saudi Arabia
| | - Russell Tayouo
- Water Desalination and Reuse Center, King Abdullah University of Science and Technology (KAUST); Kingdom of Saudi Arabia
| | - Suzana Pereira Nunes
- Water Desalination and Reuse Center, King Abdullah University of Science and Technology (KAUST); Kingdom of Saudi Arabia
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Hofman AH, Reza M, Ruokolainen J, ten Brinke G, Loos K. Hierarchical Self-Assembly of Symmetric Supramolecular Double-Comb Diblock Copolymers: a Comb Density Study. Macromolecules 2014. [DOI: 10.1021/ma501257x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Anton H. Hofman
- Department
of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Mehedi Reza
- Department
of Applied Physics, Aalto University, P.O. Box 11100, FI-00076 Aalto, Finland
| | - Janne Ruokolainen
- Department
of Applied Physics, Aalto University, P.O. Box 11100, FI-00076 Aalto, Finland
| | - Gerrit ten Brinke
- Department
of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Katja Loos
- Department
of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Miao L, Liu F, Lin S, Hu J, Liu G, Yang Y, Tu Y, Hou C, Li F, Hu M, Luo H. Superparamagnetic-oil-filled nanocapsules of a ternary graft copolymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3996-4004. [PMID: 24684287 DOI: 10.1021/la500415u] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Stearic and oleic acid-coated Fe3O4 nanoparticles were dispersed in decahydronaphthalene (DN). This oil phase was dispersed in water using ternary graft copolymer poly(glycidyl methacrylate)-graft-[polystyrene-ran-(methoxy polyethylene glycol)-ran-poly(2-cinnamoyloxyethyl methacrylate)] or PGMA-g-(PS-r-MPEG-r-PCEMA) to yield capsules. The walls of these capsules were composed of PCEMA chains that were soluble in neither water nor DN, and the DN-soluble PS chains stretched into the droplet phase and the water-soluble MPEG chains extended into the aqueous phase. Structurally stable capsules were prepared by photolyzing the capsules with UV light to cross-link the PCEMA layer. Both the magnetite particles and the magnetite-containing capsules were superparamagnetic. The sizes of the capsules increased as they were loaded with more magnetite nanoparticles, reaching a maximal loading of ~0.5 mg of ligated magnetite nanoparticles per mg of copolymer. But the radii of the capsules were always <100 nm. Thus, a novel nanomaterial--superparamagnetic-oil-filled polymer nanocapsules--was prepared. The more heavily loaded capsules were readily captured by a magnet and could be redispersed via shaking. Although the cross-linked capsules survived this capturing and redispersing treatment many times, the un-cross-linked capsules ruptured after four cycles. These results suggest the potential to tailor-make capsules with tunable wall stability for magnetically controlled release applications.
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Affiliation(s)
- Lei Miao
- Guangzhou Institute of Chemistry and ‡Key Laboratory of Cellulose Lignocellulosics Chemistry, Chinese Academy of Sciences , Guangzhou, PR China 510650
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Affiliation(s)
- Ikhlas Gadwal
- Department of Materials, ETH-Zürich, CH-8093 Zürich, Switzerland
| | - Jingyi Rao
- Department of Materials, ETH-Zürich, CH-8093 Zürich, Switzerland
| | - Julia Baettig
- Department of Materials, ETH-Zürich, CH-8093 Zürich, Switzerland
| | - Anzar Khan
- Department of Materials, ETH-Zürich, CH-8093 Zürich, Switzerland
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Yan Y, Shi Y, Zhu W, Chen Y. Highly efficient synthesis of cylindrical polymer brushes with various side chains via click grafting-onto approach. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.08.036] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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