1
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Shi J, Huang X, Li W. The impact of intramolecular polydispersity on the self-assembly of AB n miktoarm star copolymers. Phys Chem Chem Phys 2023; 25:20032-20041. [PMID: 37462012 DOI: 10.1039/d3cp00994g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
The self-assembly behaviors of ABn miktoarm star copolymers as one typical type of asymmetric architecture have been studied well in the past few decades due to their deflected phase boundaries. In particular, recently, they have attracted renewed theoretical interest due to their expanded spherical phase region that stabilizes complex Frank-Kasper spherical phases. However, previous theoretical studies have never considered ABn copolymers with unequal arm lengths, which is more or less the case for synthesized copolymers. In this work, we investigate the self-assembly behaviors of ABn miktoarm star copolymers with unequal B-arms using self-consistent field theory. We propose an intramolecular polydispersity index (iĐ) to quantify the distribution of unequal B-blocks. Accordingly, we further propose a simple quantity of an effective arm number nequ = n/iĐ for quantitatively comparing the phase boundaries between various ABn copolymer samples with different arm numbers or different distributions of B-blocks. Our results indicate that different ABn copolymers with equal nequ exhibit similar phase diagrams. On the other hand, we also found that the phase boundaries of two different samples with same nequ are not exactly overlapped. We speculate that the effect of spontaneous curvature may be mainly controlled by nequ, but the packing frustration of B-blocks may also be dependent on the other quantities that are closely related to the shape of the distribution of B-arms, such as higher order polydispersity indexes.
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Affiliation(s)
- Jiahao Shi
- State Key Laboratory of Molecular Engineering of Polymers, Key Laboratory of Computational Physical Sciences, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Xianbo Huang
- National-certified Enterprise Technology Center, Kingfa Science and Technology Co., Ltd, Science City, Guangzhou 510663, China.
| | - Weihua Li
- State Key Laboratory of Molecular Engineering of Polymers, Key Laboratory of Computational Physical Sciences, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
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2
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Jager PM, Briels WJ, Slot JJM. General weak segregation theory with an application to monodisperse semi-flexible diblock copolymers. J Chem Phys 2023; 158:104901. [PMID: 36922130 DOI: 10.1063/5.0138244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
A general theory has been developed for a polydisperse semi-flexible multi-block copolymer melt. Using the Bawendi-Freed approach to model semi-flexible chains, an expression for the Landau free energy is derived in the weak segregation regime, which includes density and orientation order-parameters. The orientation order-parameter is described in the smectic phase and in more complicated structures, such as the hexagonal phase. The Landau free energy contains contributions of two kinds of interactions. The first kind is the Flory-Huggins interaction, which describes the incompatibility of chemically different blocks and may induce microphase separation. The second kind is the Maier-Saupe interaction, which may induce nematic ordering. In the framework of the weak segregation limit, the Landau theory allows us to predict phase structures in the melt as a function of the composition, persistence length, and the strength of the Flory-Huggins and Maier-Saupe interaction. The general theory is applied to a simple system of monodisperse semi-flexible diblock copolymers. In several phase diagrams, a number of possible phase structures are predicted, such as the bcc, hexagonal, smectic-A, smectic-C, and nematic phase. The influence of the Maier-Saupe interaction on the microphase structure is thoroughly discussed.
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Affiliation(s)
- P M Jager
- EY, Centre for Tax and Legal Knowledge, Boompjes 258, P.O. Box 2295, 3011 XZ Rotterdam, The Netherlands
| | - W J Briels
- MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - J J M Slot
- Department of Mathematics and Computer Science, CASA/Applied Analysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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3
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Liu R, Sun Z, Huang H, Johnson JA, Alexander-Katz A, Ross CA. Experimental and Computational Evaluation of Self-Assembled Morphologies in Diblock Janus Bottlebrush Copolymers. NANO LETTERS 2023; 23:177-182. [PMID: 36548278 DOI: 10.1021/acs.nanolett.2c03927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Diblock Janus-type "A-branch-B" bottlebrush copolymers (di-JBBCPs) consist of a backbone with alternating A and B side chains, in contrast to the side chain arrangement of conventional bottlebrush copolymers. As a result, A and B blocks of di-JBBCPs can microphase-separate perpendicular to the backbone, which is located at the interface between the two blocks. A reparametrized dissipative particle dynamics (DPD) model is used to theoretically investigate the self-assembly of di-JBBCPs and to compare with the experimental results of a range of polystyrene-branch-polydimethylsiloxane di-JBBCPs. The experimentally formed cylinder, gyroid, and lamellar morphologies showed good correspondence with the model phase diagram, and the effect of changing volume fraction and backbone length is revealed. The DPD model predicts a bulk-stable perforated lamella morphology together with two unconventional spherical phases, the Frank-Kasper A15 spheres and the hexagonally close-packed spheres, indicating the diversity of morphologies available from complex BCP molecular architectures.
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Affiliation(s)
- Runze Liu
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Zehao Sun
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hejin Huang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alfredo Alexander-Katz
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Caroline A Ross
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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4
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Corrigan N, Boyer C. Living in the Moment: A Mathematically Verified Approach for Molecular Weight Distribution Analysis and Application to Data Storage. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00945] [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)
- Nathaniel Corrigan
- Cluster for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Australia, Sydney, NSW2052, Australia
| | - Cyrille Boyer
- Cluster for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Australia, Sydney, NSW2052, Australia
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5
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Lai H, Huang G, Tian X, Liu Y, Ji S. Engineering the domain roughness of block copolymer in directed self-assembly. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124853] [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]
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6
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Rosenbloom SI, Hsu JH, Fors BP. Controlling the shape of the molecular weight distribution for tailored tensile and rheological properties in thermoplastics and thermoplastic elastomers. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210894] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Jesse H. Hsu
- Department of Chemistry and Chemical Biology Cornell University Ithaca New York USA
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology Cornell University Ithaca New York USA
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7
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Cui J, Liu E, Song T, Han Y, Jiang W. Rectangular Cylinders Formed by Compositionally Bidisperse ABC Triblock Terpolymer Blends: A Self-Consistent Field Theory Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14889-14897. [PMID: 34905363 DOI: 10.1021/acs.langmuir.1c02713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Compared with traditional cylinders that have circular cross-sections, cylinders with rectangular cross-sections can endow nanomaterials with various novel optical properties and functions. In this work, the formation of the rectangular cylinders self-assembled by compositionally bidisperse ABC triblock terpolymer blends has been investigated via numerical simulations based on self-consistent field theory. The specially designed blending systems are composed of two types of linear ABC triblock terpolymers that have the same total chain lengths and the middle B block chain lengths, but different chain lengths of the side A/C blocks. By tuning the chain length fractions and the interactions between different blocks, rectangular cylinders with a fourfold symmetry pattern were successfully obtained in our simulations. Each rectangular phase domain is self-assembled together by the short and long side blocks of the same species. The simulation results indicate that the selective aggregation of the short side blocks determines the formation of the rectangular cylindrical phase, i.e., the short side blocks prefer to aggregate at the four corners within a rectangular cylindrical phase domain. This simulation result reveals a formation mechanism that is different from the mechanism proposed in previous experiments [Asai ACS Macro Lett., 2014, 3, 166-169]. Moreover, under different middle B block chain length fractions, phase diagrams as a function of the interaction parameter between different blocks and the short side block chain length fraction have been constructed. The phase diagrams show that the parameter window of the rectangular cylinders is considerably expanded by increasing the chain length fraction of the middle B blocks. Our simulation works can provide a theoretical basis for molecular design to regulate and fabricate nanomaterials with nontraditional phase domains in future experiments.
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Affiliation(s)
- Jie Cui
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Entian Liu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Tongjing Song
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Yuanyuan Han
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Wei Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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8
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Liu R, Huang H, Sun Z, Alexander-Katz A, Ross CA. Metallic Nanomeshes Fabricated by Multimechanism Directed Self-Assembly. ACS NANO 2021; 15:16266-16276. [PMID: 34647737 DOI: 10.1021/acsnano.1c05315] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The directed self-assembly of block copolymers (BCPs) is a powerful motif for the continued scaling of feature sizes for nanoscale devices. A multimechanism directed self-assembly (MMDSA) method is described that generates orthogonal meshes from a polystyrene-b-poly-2-vinylpyridine BCP that is subsequently metallized with Pt. The MMDSA process takes advantage of three different mechanisms, trench wall guidance, edge nucleation, and underlayer guidance, to align the mesh with respect to substrate features. The mechanisms and their interactions are investigated via both experiments and dissipative particle dynamics simulations. MMDSA is applied to produce well-aligned conductive nanomeshes and then is extended to fabricate multicomponent metallic structures with 2D/3D hybrid morphologies.
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Affiliation(s)
- Runze Liu
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hejin Huang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Zehao Sun
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alfredo Alexander-Katz
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Caroline A Ross
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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9
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Reddy A, Feng X, Thomas EL, Grason GM. Block Copolymers beneath the Surface: Measuring and Modeling Complex Morphology at the Subdomain Scale. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00958] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Abhiram Reddy
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Xueyan Feng
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Edwin L. Thomas
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Gregory M. Grason
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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10
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Li Q, Li W. Expanding Alternating Spherical and Cylindrical Regions by Tailoring Binary Symmetric ABC/ABC Blends. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qingyun Li
- State Key Laboratory of Molecular Engineering of Polymers, Key Laboratory of Computational Physical Sciences, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Weihua Li
- State Key Laboratory of Molecular Engineering of Polymers, Key Laboratory of Computational Physical Sciences, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
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11
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Lai CT, Shi A. Binary Blends of Diblock Copolymers: An Effective Route to Novel Bicontinuous Phases. MACROMOL THEOR SIMUL 2021. [DOI: 10.1002/mats.202100019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chi To Lai
- Department of Physics & Astronomy McMaster University 1280 Main St. W, Hamilton Ontario L8S 4M1 Canada
| | - An‐Chang Shi
- Department of Physics & Astronomy McMaster University 1280 Main St. W, Hamilton Ontario L8S 4M1 Canada
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12
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Yin R, Wang Z, Bockstaller MR, Matyjaszewski K. Tuning dispersity of linear polymers and polymeric brushes grown from nanoparticles by atom transfer radical polymerization. Polym Chem 2021. [DOI: 10.1039/d1py01178b] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Molecular weight distribution imposes considerable influence on the properties of polymers, making it an important parameter, impacting morphology and structural behavior of polymeric materials.
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Affiliation(s)
- Rongguan Yin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Zongyu Wang
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Michael R. Bockstaller
- Department of Materials Science & Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
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13
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Jia R, Tu Y, Glauber M, Huang Z, Xuan S, Zhang W, Zhou N, Li X, Zhang Z, Zhu X. Fine control of the molecular weight and polymer dispersity via a latent monomeric retarder. Polym Chem 2021. [DOI: 10.1039/d0py01569e] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A latent monomeric retarder was used for a one-shot polymerization with a defined MW and Đ.
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14
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Mahalik JP, Li W, Savici AT, Hahn S, Lauter H, Ambaye H, Sumpter BG, Lauter V, Kumar R. Dispersity-Driven Stabilization of Coexisting Morphologies in Asymmetric Diblock Copolymer Thin Films. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jyoti P. Mahalik
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Department of Mathematics, University of Tennessee, Knoxville, Tennessee 37916, United States
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01002, United States
| | - Wei Li
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37916, United States
| | - Andrei T. Savici
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Steven Hahn
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Hans Lauter
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Haile Ambaye
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Bobby G. Sumpter
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Valeria Lauter
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Rajeev Kumar
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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15
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Liu K, Corrigan N, Postma A, Moad G, Boyer C. A Comprehensive Platform for the Design and Synthesis of Polymer Molecular Weight Distributions. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01954] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ke Liu
- Centre for Advanced Macromolecular Design (CAMD) and School of Chemical Engineering, University of New South Wales (UNSW) Sydney, Sydney, NSW 2052, Australia
| | - Nathaniel Corrigan
- Centre for Advanced Macromolecular Design (CAMD) and School of Chemical Engineering, University of New South Wales (UNSW) Sydney, Sydney, NSW 2052, Australia
- Australian Centre for Nanomedicine (ACN) and School of Chemical Engineering, University of New South Wales (UNSW) Sydney, Sydney, NSW 2052, Australia
| | - Almar Postma
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - Graeme Moad
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD) and School of Chemical Engineering, University of New South Wales (UNSW) Sydney, Sydney, NSW 2052, Australia
- Australian Centre for Nanomedicine (ACN) and School of Chemical Engineering, University of New South Wales (UNSW) Sydney, Sydney, NSW 2052, Australia
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16
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Lin FY, Hohmann AD, Hernández N, Shen L, Dietrich H, Cochran EW. Self-Assembly of Poly(styrene- block-acrylated epoxidized soybean oil) Star-Brush-Like Block Copolymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00441] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fang-Yi Lin
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Austin D. Hohmann
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Nacú Hernández
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Liyang Shen
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Hannah Dietrich
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Eric W. Cochran
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
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17
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Rosenbloom SI, Fors BP. Shifting Boundaries: Controlling Molecular Weight Distribution Shape for Mechanically Enhanced Thermoplastic Elastomers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00954] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Stephanie I. Rosenbloom
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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18
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Lequieu J, Koeper T, Delaney KT, Fredrickson GH. Extreme Deflection of Phase Boundaries and Chain Bridging in A(BA′)n Miktoarm Star Polymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02254] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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19
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Domanskyi S, Gentekos DT, Privman V, Fors BP. Predictive design of polymer molecular weight distributions in anionic polymerization. Polym Chem 2020. [DOI: 10.1039/c9py00074g] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Polymer molecular weight distributions are targeted through kinetic modeled with high fidelity based on the temporal control of chain initiation in anionic polymerizations.
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Affiliation(s)
| | | | | | - Brett P. Fors
- Department of Chemistry and Chemical Biology
- Cornell University
- Ithaca
- USA
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20
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Huang H, Alexander-Katz A. Dissipative particle dynamics for directed self-assembly of block copolymers. J Chem Phys 2019; 151:154905. [DOI: 10.1063/1.5117839] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Hejin Huang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Alfredo Alexander-Katz
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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21
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Affiliation(s)
- Inho Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Sheng Li
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
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22
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Zeng D, Hayward RC. Effects of Randomly End-Linked Copolymer Network Parameters on the Formation of Disordered Cocontinuous Phases. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00050] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Di Zeng
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003-9263, United States
| | - Ryan C. Hayward
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003-9263, United States
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23
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Gil Haenelt T, Abetz C, Abetz V. Morphological Control Over Three- and Four-Phase Superstructures in Blends of Asymmetric ABC and BAC Triblock Terpolymers. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Taida Gil Haenelt
- Institute of Physical Chemistry; University of Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Germany
| | - Clarissa Abetz
- Helmholtz-Zentrum Geesthacht; Institute of Polymer Research; Max-Planck-Strasse 1 21502 Geesthacht Germany
| | - Volker Abetz
- Institute of Physical Chemistry; University of Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Germany
- Helmholtz-Zentrum Geesthacht; Institute of Polymer Research; Max-Planck-Strasse 1 21502 Geesthacht Germany
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24
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Gentekos DT, Fors BP. Molecular Weight Distribution Shape as a Versatile Approach to Tailoring Block Copolymer Phase Behavior. ACS Macro Lett 2018; 7:677-682. [PMID: 35632976 DOI: 10.1021/acsmacrolett.8b00295] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The molecular weight distributions (MWDs) of block copolymers significantly impact their morphological phase behavior, but exploiting these features as a means to tune material properties has been limited to the MWD breadth, or dispersity (Đ). Manipulation of the entire MWD has promising potential to address this challenge by providing a convenient and versatile route toward tailoring polymer nanostructure. Herein, we describe the self-assembly of poly(styrene)-block-poly(2-vinylpyridine) (PS-b-P2VP) where the PS blocks have systematically deviating compositions of molecular weights. We find that controlling the MWD shape, breadth and skew, afforded access to different morphologies in samples with the same molecular characteristics, including Đ. As such, we illustrate the generality and effectiveness of this strategy and anticipate that it will facilitate the increased deployment of disperse polymer compositions in advanced materials applications.
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Affiliation(s)
- Dillon T. Gentekos
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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25
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Guo Z, Le AN, Feng X, Choo Y, Liu B, Wang D, Wan Z, Gu Y, Zhao J, Li V, Osuji CO, Johnson JA, Zhong M. Janus Graft Block Copolymers: Design of a Polymer Architecture for Independently Tuned Nanostructures and Polymer Properties. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802844] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zi‐Hao Guo
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - An N. Le
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Xunda Feng
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Youngwoo Choo
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Bingqian Liu
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Danyu Wang
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Zhengyi Wan
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Yuwei Gu
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Julia Zhao
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Vince Li
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Chinedum O. Osuji
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Jeremiah A. Johnson
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Mingjiang Zhong
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
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26
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Guo Z, Le AN, Feng X, Choo Y, Liu B, Wang D, Wan Z, Gu Y, Zhao J, Li V, Osuji CO, Johnson JA, Zhong M. Janus Graft Block Copolymers: Design of a Polymer Architecture for Independently Tuned Nanostructures and Polymer Properties. Angew Chem Int Ed Engl 2018; 57:8493-8497. [DOI: 10.1002/anie.201802844] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Zi‐Hao Guo
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - An N. Le
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Xunda Feng
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Youngwoo Choo
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Bingqian Liu
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Danyu Wang
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Zhengyi Wan
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Yuwei Gu
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Julia Zhao
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Vince Li
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Chinedum O. Osuji
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
| | - Jeremiah A. Johnson
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Mingjiang Zhong
- Department of Chemical and Environmental Engineering Yale University New Haven CT 06511 USA
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27
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Seo Y, Jang S, Ahn S, Mishra AK, Kim JK, Lee WB. Phase Behavior of 18-Arm Star-Shaped Polystyrene-block-poly(methyl methacrylate) Copolymers with Different Second Block Initiations. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02586] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yeseong Seo
- National Creative Research Initiative Center for Smart Block Copolymers, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea
| | - Sangsin Jang
- National Creative Research Initiative Center for Smart Block Copolymers, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea
| | - Seonghyeon Ahn
- National Creative Research Initiative Center for Smart Block Copolymers, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea
| | - Avnish Kumar Mishra
- National Creative Research Initiative Center for Smart Block Copolymers, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea
| | - Jin Kon Kim
- National Creative Research Initiative Center for Smart Block Copolymers, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea
| | - Won Bo Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
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28
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Gentekos DT, Jia J, Tirado ES, Barteau KP, Smilgies DM, DiStasio RA, Fors BP. Exploiting Molecular Weight Distribution Shape to Tune Domain Spacing in Block Copolymer Thin Films. J Am Chem Soc 2018. [DOI: 10.1021/jacs.8b00694] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Dillon T. Gentekos
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Junteng Jia
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Erika S. Tirado
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Katherine P. Barteau
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Detlef-M. Smilgies
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, New York 14853, United States
| | - Robert A. DiStasio
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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29
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Montana JS, Roland S, Richaud E, Miquelard-Garnier G. From equilibrium lamellae to out-of-equilibrium cylinders in triblock copolymer nanolayers obtained via multilayer coextrusion. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.12.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Zhang Q, Lin J, Wang L, Xu Z. Theoretical modeling and simulations of self-assembly of copolymers in solution. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2017.04.003] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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31
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Woo S, Shin TJ, Choe Y, Lee H, Huh J, Bang J. Domain swelling in ARB-type triblock copolymers via self-adjusting effective dispersity. SOFT MATTER 2017; 13:5527-5534. [PMID: 28795184 DOI: 10.1039/c7sm01083d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We investigated the domain spacing of an ordered structure formed by polydisperse ARB-type triblock copolymers (triBCPs) with random middle R blocks consisting of A and B monomers. ARB-type triBCPs were synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization, and the dispersities of all samples were controlled as narrow as ∼1.2. From the bulk and film morphologies, it was found that the domain swelling increases as the content of middle R blocks increases, which implies that the middle R block even with a small content plays a critical role in dilating the domain spacing. Since the random middle R blocks are energetically neutral, they can be segregated into either A or B blocks. The strong stretching theory (SST) suggests that the dispersities of the resulting constituent blocks are maximized to reduce the elastic energy associated with chain stretching, thereby leading to the dilation of domain spacing.
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Affiliation(s)
- Sanghoon Woo
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.
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32
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Haenelt TG, Abetz C, Abetz V. Four-Phase Morphologies in Blends of ABC and BAC Triblock Terpolymers. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700241] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Taida Gil Haenelt
- Institute of Physical Chemistry; University of Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Germany
| | - Clarissa Abetz
- Helmholtz-Zentrum Geesthacht; Institute of Polymer Research; Max-Planck-Strasse 1 21502 Geesthacht Germany
| | - Volker Abetz
- Institute of Physical Chemistry; University of Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Germany
- Helmholtz-Zentrum Geesthacht; Institute of Polymer Research; Max-Planck-Strasse 1 21502 Geesthacht Germany
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33
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Mulhearn WD, Register RA. Melt Miscibility in Diblock Copolymers Containing Polyethylene and Substituted Hydrogenated Polynorbornenes. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01295] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- William D. Mulhearn
- Department of Chemical and
Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Richard A. Register
- Department of Chemical and
Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
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34
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Oschmann B, Lawrence J, Schulze MW, Ren JM, Anastasaki A, Luo Y, Nothling MD, Pester CW, Delaney KT, Connal LA, McGrath AJ, Clark PG, Bates CM, Hawker CJ. Effects of Tailored Dispersity on the Self-Assembly of Dimethylsiloxane-Methyl Methacrylate Block Co-Oligomers. ACS Macro Lett 2017; 6:668-673. [PMID: 35650863 DOI: 10.1021/acsmacrolett.7b00262] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The effect of dispersity on block polymer self-assembly was studied in the monodisperse limit using a combination of synthetic chemistry, matrix-assisted laser desorption ionization spectroscopy, and small-angle X-ray scattering. Oligo(methyl methacrylate) (oligoMMA) and oligo(dimethylsiloxane) (oligoDMS) homopolymers were synthesized by conventional polymerization techniques and purified to generate an array of discrete, semidiscrete, and disperse building blocks. Coupling reactions afforded oligo(DMS-MMA) block polymers with precisely tailored molar mass distributions spanning single molecular systems (Đ = 1.0) to low-dispersity mixtures (Đ ≈ 1.05). Discrete materials exhibit a pronounced decrease in domain spacing and sharper scattering reflections relative to disperse analogues. The order-disorder transition temperature (TODT) also decreases with increasing dispersity, suggesting stabilization of the disordered phase, presumably due to the strengthening of composition fluctuations at the low molar masses investigated.
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Affiliation(s)
| | | | | | - Jing M. Ren
- Department
of Chemical and Biomolecular Engineering, The University of Melbourne, Victoria 3010, Australia
| | | | - Yingdong Luo
- Center for
Nanophase Materials Sciences, Oak Ridge National Laboratories, Oak Ridge, Tennessee 37831, United States
| | - Mitchell D. Nothling
- Department
of Chemical and Biomolecular Engineering, The University of Melbourne, Victoria 3010, Australia
| | | | | | - Luke A. Connal
- Department
of Chemical and Biomolecular Engineering, The University of Melbourne, Victoria 3010, Australia
| | | | - Paul G. Clark
- The Dow Chemical Company, Midland, Michigan 48667, United States
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35
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Beardsley TM, Matsen MW. Universality between Experiment and Simulation of a Diblock Copolymer Melt. PHYSICAL REVIEW LETTERS 2016; 117:217801. [PMID: 27911549 DOI: 10.1103/physrevlett.117.217801] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Indexed: 06/06/2023]
Abstract
The equivalent behavior among analogous block copolymer systems involving chemically distinct molecules or mathematically different models has long hinted at an underlying universality, but only recently has it been rigorously demonstrated by matching results from different simulations. The profound implication of universality is that simple coarse-grained models can be calibrated so as to provide quantitatively accurate predictions to experiment. Here, we provide the first compelling demonstration of this by simulating a polyisoprene-polylactide diblock copolymer melt using a previously calibrated lattice model. The simulation successfully predicts the peak in the disordered-state structure function, the position of the order-disorder transition, and the latent heat of the transition in excellent quantitative agreement with experiment. This could mark a new era of precision in the field of block copolymer research.
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Affiliation(s)
- Thomas M Beardsley
- Department of Chemical Engineering, Department of Physics & Astronomy, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Mark W Matsen
- Department of Chemical Engineering, Department of Physics & Astronomy, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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36
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Vanderwoude G, Shi AC. Effects of Blockiness and Polydispersity on the Phase Behavior of Random Block Copolymers. MACROMOL THEOR SIMUL 2016. [DOI: 10.1002/mats.201600044] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gordon Vanderwoude
- Department of Physics & Astronomy; McMaster University Hamilton; Ontario L8S 4M1 Canada
| | - An-Chang Shi
- Department of Physics & Astronomy; McMaster University Hamilton; Ontario L8S 4M1 Canada
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37
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Kottisch V, Gentekos DT, Fors BP. "Shaping" the Future of Molecular Weight Distributions in Anionic Polymerization. ACS Macro Lett 2016; 5:796-800. [PMID: 35614766 DOI: 10.1021/acsmacrolett.6b00392] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Varying molecular weight distributions (MWDs) have the potential to precisely tune polymer properties, but this approach remains relatively unexplored owing to a lack of synthetic methods that provide control over the exact makeup of a distribution. Herein, we report a simple and highly efficient strategy for addressing this challenge through temporal regulation of initiation in the anionic polymerization of styrene. This method yields unprecedented control over the shape of the polymer MWD and facilitates the synthesis of diblock copolymers with controlled MWD compositions. Importantly, we show that the MWD symmetry has a marked influence on the stiffness of poly(styrene-block-isoprene) copolymers, which demonstrates that varying MWD shape is an effective method for altering polymer properties.
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Affiliation(s)
| | | | - Brett P. Fors
- Cornell University, Ithaca, New York 14853, United States
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38
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Wang H, Forsman J, Woodward CE. Density functional theory of equilibrium random copolymers: application to surface adsorption of aggregating peptides. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:244011. [PMID: 27115518 DOI: 10.1088/0953-8984/28/24/244011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We generalize a recently developed polymer density functional theory (PDFT) for polydisperse polymer fluids to the case of equilibrium random copolymers. We show that the generalization of the PDFT to these systems allows us to obtain a remarkable simplification compared to the monodispersed polymers. The theory is used to treat a model for protein aggregation into linear filaments in the presence of surfaces. Here we show that, for attractive surfaces, there is evidence of significant enhancement of protein aggregation. This behaviour is a consequence of a surface phase transition, which has been shown to occur with ideal equilibrium polymers in the presence of sufficiently attractive surfaces. For excluding monomers, this transition is suppressed, though an echo of the underlying ideal transition is present in the sudden change in the excess adsorption.
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Affiliation(s)
- Haiqiang Wang
- School of Physical, Environmental and Mathematical Sciences, University of New South Wales, Canberra at the Australian Defence Force Academy, Canberra ACT 2600, Australia
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39
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40
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Gentekos DT, Dupuis LN, Fors BP. Beyond Dispersity: Deterministic Control of Polymer Molecular Weight Distribution. J Am Chem Soc 2016; 138:1848-51. [DOI: 10.1021/jacs.5b13565] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Brett P. Fors
- Cornell University, Ithaca, New York 14853, United States
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41
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Jiang Z, Qian Z, Yang H, Wang R. Disorder to Order Transition and Ordered Morphology of Coil-Comb Block Copolymer by Self-Consistent Field Theory. NANOSCALE RESEARCH LETTERS 2015; 10:1035. [PMID: 26280750 PMCID: PMC4538716 DOI: 10.1186/s11671-015-1035-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 08/01/2015] [Indexed: 06/04/2023]
Abstract
The disorder to order transition and the ordered patterns near the disordered state of coil-comb copolymer A-b-(B m + 1-g-C m ) are investigated by the self-consistent field theory. The phase diagrams of coil-comb copolymer are obtained by varying the composition of the copolymer with the side chain number m = 1, 2, and 3. The disorder to order transition is far more complex compared with the comb copolymer or linear block copolymer. As the side chain number m increases, the Flory-Huggins interaction parameter of disorder to order transition (DOT) increases and the lowest DOT occurs when the volume fractions of blocks A, B, and C are approximately equal. When one component is the minority, the disorder to order transition curve is similar with binary copolymer, but the curve shows the asymmetric property. The comb copolymer is more stable with larger side chain number m and shorter side chain. The ordered patterns from the disordered state are discussed. The results are helpful for designing coil-comb copolymers and obtaining the ordered morphology.
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Affiliation(s)
- Zhibin Jiang
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, State Key Laboratory of Coordination Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093 China
| | - Zhiyuan Qian
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, State Key Laboratory of Coordination Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093 China
| | - Hong Yang
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, State Key Laboratory of Coordination Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093 China
| | - Rong Wang
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, State Key Laboratory of Coordination Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093 China
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42
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Peters AJ, Lawson RA, Nation BD, Ludovice PJ, Henderson CL. Simulation study of the effect of molar mass dispersity on domain interfacial roughness in lamellae forming block copolymers for directed self-assembly. NANOTECHNOLOGY 2015; 26:385301. [PMID: 26335174 DOI: 10.1088/0957-4484/26/38/385301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A coarse-grained molecular dynamics model was used to study the thin film self-assembly and resulting pattern properties of block copolymer (BCP) systems with various molar mass dispersities. Diblock copolymers (i.e. A-b-B type) were simulated in an aligned lamellar state, which is one of the most common patterns of potential use for integrated circuit fabrication via directed self-assembly of BCPs. Effects of the molar mass dispersity (Ð) on feature pitch and interfacial roughness, which are critical lithographic parameters that have a direct impact on integrated circuit performance, were simulated. It was found that for a realistic distribution of polymer molecular weights, modeled by a Wesslau distribution, both line edge roughness (LER) and line width roughness (LWR) increase approximately linearly with increasing Ð, up to ∼45% of the monodisperse value at Ð = 1.5. Mechanisms of compensation for increased A-A and B-B roughness were considered. It was found that long and short chain positions were not correlated, and that long chains were significantly deformed in shape. The increase in LWR was due to the increase in LER and a constant correlation between the line edges. Unaligned systems show a correlation between domain width and local molecular weight, while systems aligned on an alternating pattern of A and B lines did not show any correlation. When the volume fraction of individual chains was allowed to vary, similar results were found when considering the Ð of the block as opposed to the Ð of the entire system.
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Affiliation(s)
- Andrew J Peters
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 311 Ferst Drive NW, Atlanta, GA 30332-0100, USA
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43
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Aliev MA, Kuzminyh NY. Microphase separation in polydisperse rod-rod diblock copolymer melt. J Chem Phys 2015; 143:084901. [DOI: 10.1063/1.4929359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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44
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Kumar R, Lokitz BS, Sides SW, Chen J, Heller WT, Ankner JF, Browning JF, Kilbey II SM, Sumpter BG. Microphase separation in thin films of lamellar forming polydisperse di-block copolymers. RSC Adv 2015. [DOI: 10.1039/c5ra00974j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Effects of polydispersity in chain lengths on microphase separation in thin films of di-block copolymers are studied using self-consistent field theory (SCFT) and neutron reflectivity experiments.
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Affiliation(s)
- Rajeev Kumar
- Computer Science and Mathematics Division
- Oak Ridge National Lab
- Oak Ridge
- USA
- Center for Nanophase Materials Sciences
| | - Bradley S. Lokitz
- Center for Nanophase Materials Sciences
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | | | - Jihua Chen
- Center for Nanophase Materials Sciences
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | | | - John F. Ankner
- Spallation Neutron Source
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | | | | | - Bobby G. Sumpter
- Computer Science and Mathematics Division
- Oak Ridge National Lab
- Oak Ridge
- USA
- Center for Nanophase Materials Sciences
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45
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Gavrilov AA, Kudryavtsev YV, Chertovich AV. Phase diagrams of block copolymer melts by dissipative particle dynamics simulations. J Chem Phys 2014; 139:224901. [PMID: 24329087 DOI: 10.1063/1.4837215] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Phase diagrams for monodisperse and polydisperse diblock copolymer melts and a random multiblock copolymer melt are constructed using dissipative particle dynamics simulations. A thorough visual analysis and calculation of the static structure factor in several hundreds of points at each of the diagrams prove the ability of mesoscopic molecular dynamics to predict the phase behavior of polymer systems as effectively as the self-consistent field-theory and Monte Carlo simulations do. It is demonstrated that the order-disorder transition (ODT) curve for monodisperse diblocks can be precisely located by a spike in the dependence of the mean square pressure fluctuation on χN, where χ is the Flory-Huggins parameter and N is the chain length. For two other copolymer types, the continuous ODTs are observed. Large polydispersity of both blocks obeying the Flory distribution in length does not shift the ODT curve but considerably narrows the domains of the cylindrical and lamellar phases partially replacing them with the wormlike micelle and perforated lamellar phases, respectively. Instead of the pure 3d-bicontinuous phase in monodisperse diblocks, which could be identified as the gyroid, a coexistence of the 3d phase and cylindrical micelles is detected in polydisperse diblocks. The lamellar domain spacing D in monodisperse diblocks follows the strong-segregation theory prediction, D∕N(1∕2) ~ (χN)(1∕6), whereas in polydisperse diblocks it is almost independent of χN at χN < 100. Completely random multiblock copolymers cannot form ordered microstructures other than lamellas at any composition.
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Affiliation(s)
- Alexey A Gavrilov
- Physics Department, Lomonosov Moscow State University, Leninskie gory, 1, build. 2, 119991 Moscow, Russia
| | - Yaroslav V Kudryavtsev
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky prosp. 29, 119991 Moscow, Russia
| | - Alexander V Chertovich
- Physics Department, Lomonosov Moscow State University, Leninskie gory, 1, build. 2, 119991 Moscow, Russia
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46
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Ivanova AN, Kuchanov SI, Shaginyan SA, Manevich LI. Phase behavior of compressible melts of multiblock polydisperse copolymers. POLYMER SCIENCE SERIES A 2014. [DOI: 10.1134/s0965545x14040087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Agudelo NA, Elsen AM, He H, López BL, Matyjaszewski K. ABA triblock copolymers from two mechanistic techniques: Polycondensation and atom transfer radical polymerization. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27300] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Natalia A. Agudelo
- Grupo de Investigación Ciencia de los Materiales; Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia; Calle 70 N° 52-21 Medellín Colombia
| | - Andrea M. Elsen
- Department of Chemistry; Center for Macromolecular Engineering, Carnegie Mellon University; 4400 Fifth Avenue Pittsburgh Pennsylvania 15213
| | - Hongkun He
- Department of Chemistry; Center for Macromolecular Engineering, Carnegie Mellon University; 4400 Fifth Avenue Pittsburgh Pennsylvania 15213
| | - Betty L. López
- Grupo de Investigación Ciencia de los Materiales; Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia; Calle 70 N° 52-21 Medellín Colombia
| | - Krzysztof Matyjaszewski
- Department of Chemistry; Center for Macromolecular Engineering, Carnegie Mellon University; 4400 Fifth Avenue Pittsburgh Pennsylvania 15213
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48
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He P, Shen W, Yu W, Zhou C. Mesophase Separation and Rheology of Olefin Multiblock Copolymers. Macromolecules 2014. [DOI: 10.1021/ma402330a] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peng He
- Advanced Rheology Institute, Department
of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Wei Shen
- Advanced Rheology Institute, Department
of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Wei Yu
- Advanced Rheology Institute, Department
of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Chixing Zhou
- Advanced Rheology Institute, Department
of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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Brown JR, Sides SW, Hall LM. Phase Behavior of Tapered Diblock Copolymers from Self-Consistent Field Theory. ACS Macro Lett 2013; 2:1105-1109. [PMID: 35606975 DOI: 10.1021/mz400546h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Tapered diblock copolymers are similar to AB diblock copolymers, but the sharp junction between the A and B blocks is replaced with a gradient region in which composition varies from mostly A to mostly B along its length. The A side of the taper can be attached to the A block (normal) or the B block (inverse). We demonstrate how taper length and direction affect the phase diagrams and density profiles using self-consistent field theory. Adding tapers shifts the order-disorder transition to lower temperature versus the diblock, and this effect is larger for longer tapers and for inverse tapers. However, tapered systems' phase diagrams and interfacial profiles do not simply match those of diblocks at a shifted effective temperature. For instance, we find that normal tapering widens the bicontinuous gyroid region of the phase diagram, while inverse tapering narrows this region, apparently due to differences in polymer organization at the interfaces.
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Affiliation(s)
- Jonathan R. Brown
- William G. Lowrie
Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 W 19th Avenue, Columbus, Ohio 43210, United States
| | - Scott W. Sides
- National Renewable Energy Laboratory (NREL), 15013 Denver West Parkway, Golden, Colorado 80401, United States
| | - Lisa M. Hall
- William G. Lowrie
Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 W 19th Avenue, Columbus, Ohio 43210, United States
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Pandav G, Ganesan V. Fluctuation effects on the order-disorder transition in polydisperse copolymer melts. J Chem Phys 2013; 139:214905. [DOI: 10.1063/1.4833137] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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