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Zhong Z, Du G, Ma L, Wang Y, Jiang J. Self-Assembly of Lamellae-in-Lamellae by Double-Tail Cationic Surfactants. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2401210. [PMID: 38751126 PMCID: PMC11267300 DOI: 10.1002/advs.202401210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/25/2024] [Indexed: 07/25/2024]
Abstract
The molecular structures of surfactants play a pivotal role in influencing their self-assembly behaviors. In this work, using simulations and experiments, an unconventional hierarchically layered structure in the didodecyldimethylammonium bromide (DDAB)/water binary system: lamellae-in-lamellae is revealed, a new self-assembly structure in surfactant system. This self-assembly structure refers to a lamellar structure with a shorter periodic length (inner lamellae) embedded in a lamellar phase with a longer periodic length (outer lamellae). The normal vectors of these two lamellar regions orient perpendicularly. In addition, it is observed that this lamellar-in-lamellar phase disappears when the two tails of the cationic surfactants become longer. The formation of the lamellar-in-lamellar architecture arises from multiple interacting factors. The key element is that the short tails of the DDAB surfactants enhance hydrophilicity and rigidity, which facilitates the formation of the inner lamellae. Moreover, the lateral monolayer of the inner lamellae provides shielding from the water and prompts the formation of the outer lamellae. These findings indicate that molecular structures and flexibility can profoundly redirect the hierarchical self-assembly behaviors in amphiphilic systems. More broadly, this work presents a new strategy to deliberately program hierarchical nanomaterials by designing specific surfactant molecules to act as tunable scaffolds, reactors, and carriers.
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Affiliation(s)
- Zhixuan Zhong
- Beijing National Laboratory for Molecular SciencesState Key Laboratory of Polymer Physics and ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Guanqun Du
- CAS Key Laboratory of ColloidInterface and Chemical ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular ScienceInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Linbo Ma
- Beijing National Laboratory for Molecular SciencesState Key Laboratory of Polymer Physics and ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Yilin Wang
- University of Chinese Academy of SciencesBeijing100049P. R. China
- CAS Key Laboratory of ColloidInterface and Chemical ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular ScienceInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Jian Jiang
- Beijing National Laboratory for Molecular SciencesState Key Laboratory of Polymer Physics and ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
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Qian M, Xu Y. Formation of Perpendicular Three-Dimensional Network Nanostructures in ABC-Star Copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7889-7897. [PMID: 35730246 DOI: 10.1021/acs.langmuir.2c00140] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Perpendicular arrangements in hierarchical nanostructures show superior mechanical properties and provide great opportunities for the development of advanced membranes because different channels are connected by the perpendicular blocks. To obtain these perpendicular hierarchical nanostructures, we use a simple ABC-star terpolymer because of the existence of a conjunction point by using the A block as a polymer network template, which guides the BC phase separation accordingly. When χBC is 10, the formed phase and the corresponding phase diagram of ABC-star are similar to those of the AB2 triblock because of the mixture between the B and C blocks. Interestingly, at increased χBC, the B and C blocks phase separate, leading to the formation of a series of perpendicular nanostructures, including perpendicular lamellae-in-lamellae (L⊥), perpendicular lamellae-in-cylinder (C⊥), and even perpendicular three-dimensional polymer networks (G⊥). The corresponding stability regime of each phase is identified through the dedicated comparison of free energy, which can well explain the missing phases in Monte Carlo simulations. Our proposed design route according to the target structures and the calculated phase diagram can provide useful guidance for the experimental observation of these perpendicular nanostructures.
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Affiliation(s)
- Mingshuang Qian
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Yuci Xu
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
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3
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Yin M, Xu Y. Spatial Dimension Determined Stability of Hierarchical Structures in A(BC)
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B Multiblock Copolymers. MACROMOL THEOR SIMUL 2022. [DOI: 10.1002/mats.202200028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mengchen Yin
- Faculty of Materials Science and Chemical Engineering Ningbo University Ningbo
| | - Yuci Xu
- Faculty of Materials Science and Chemical Engineering Ningbo University Ningbo
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Liu Z, Xu Z, Wang L, Lin J. Distinctive Optical Properties of Hierarchically Ordered Nanostructures Self-Assembled from Multiblock Copolymer/Nanoparticle Mixtures. Macromol Rapid Commun 2020; 41:e2000131. [PMID: 32329165 DOI: 10.1002/marc.202000131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 04/05/2020] [Indexed: 11/06/2022]
Abstract
Hybrid materials with hierarchical nanostructures are of great interest for their advanced functions. However, the effect of the formation of hierarchical nanostructures on properties is not well understood. Here, through combining dissipative particle dynamics simulation and the finite-difference time-domain method, the optical properties of hierarchically ordered nanostructures formed by mixtures of A(BC)n multiblock copolymers and nanoparticles (NPs) are investigated. A series of hierarchically ordered nanostructures with multiple small-length-scale hybrid domains are obtained from the self-assembly of A(BC)n /NP. An increase and blueshift in optical absorption are observed when the number of small-length-scale hybrid domains increases. The small-length-scale hybrid domains enhance light scattering, which consequently contributes to the improved optical performance. These findings can yield guidelines for designing hierarchically ordered functional nanocomposites with light-harvesting characteristics.
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Affiliation(s)
- Zaojin Liu
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhanwen Xu
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Liquan Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jiaping Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
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Hu W, Shao Z, Zhang D, Xu Y. Phase Diagram of Hierarchical Structures Formed from A(BC)
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B Multiblock Copolymers. MACROMOL THEOR SIMUL 2019. [DOI: 10.1002/mats.201900004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Weiguo Hu
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo Zhejiang 315211 China
| | - Zhanwei Shao
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo Zhejiang 315211 China
| | - Di Zhang
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo Zhejiang 315211 China
| | - Yuci Xu
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo Zhejiang 315211 China
- State Key Laboratory of Molecular Engineering of PolymerDepartment of Macromolecular ScienceFudan University Shanghai 200433 China
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Gringolts ML, Denisova YI, Finkelshtein ES, Kudryavtsev YV. Olefin metathesis in multiblock copolymer synthesis. Beilstein J Org Chem 2019; 15:218-235. [PMID: 30745996 PMCID: PMC6350893 DOI: 10.3762/bjoc.15.21] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 12/21/2018] [Indexed: 12/29/2022] Open
Abstract
Multiblock copolymers constitute a basis for an emerging class of nanomaterials that combine various functional properties with durability and enhanced mechanical characteristics. Our mini-review addresses synthetic approaches to the design of multiblock copolymers from unsaturated monomers and polymers using olefin metathesis reactions and other ways of chemical modification across double C=C bonds. The main techniques, actively developed during the last decade and discussed here, are the coupling of end-functionalized blocks, sequential ring-opening metathesis polymerization, and cross metathesis between unsaturated polymers, or macromolecular cross metathesis. The last topic attracts special interest due to its relative simplicity and broad opportunities to tailor the structure and hence the properties of the copolymer products. Whenever possible, we analyze the structure-property relations for multiblock copolymers and point to their possible practical applications.
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Affiliation(s)
- Maria L Gringolts
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky prosp. 29, 119991 Moscow, Russia
| | - Yulia I Denisova
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky prosp. 29, 119991 Moscow, Russia
| | - Eugene Sh Finkelshtein
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky prosp. 29, 119991 Moscow, Russia
| | - Yaroslav V Kudryavtsev
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky prosp. 29, 119991 Moscow, Russia
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7
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Govorun EN, Chertovich AV. Microphase separation in random multiblock copolymers. J Chem Phys 2017; 146:034903. [DOI: 10.1063/1.4973933] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- E. N. Govorun
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russia
| | - A. V. Chertovich
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russia
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8
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Affiliation(s)
- Hsuan-Hung Liu
- Institute
of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan R. O. C
| | - Ching-I Huang
- Institute
of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan R. O. C
| | - An-Chang Shi
- Department
of Physics and Astronomy, McMaster University, Hamilton, Ontario Canada, L8S 4M1
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9
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Wang Z, Shao J, Pan H, Feng X, Chen P, Xia R, Wu X, Qian J. Monte Carlo simulations of the phase separation of a copolymer blend in a thin film. Chemphyschem 2015; 16:567-71. [PMID: 25504337 DOI: 10.1002/cphc.201402690] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Indexed: 11/09/2022]
Abstract
Monte Carlo simulations were carried out to study the phase separation of a copolymer blend comprising an alternating copolymer and/or block copolymer in a thin film, and a phase diagram was constructed with a series of composed recipes. The effects of composition and segregation strength on phase separation were discussed in detail. The chain conformation of the block copolymer and alternating copolymer were investigated with changes of the segregation strength. Our simulations revealed that the segment distribution along the copolymer chain and the segregation strength between coarse-grained beads are two important parameters controlling phase separation and chain conformation in thin films of a copolymer blend. A well-controlled phase separation in the copolymer blend can be used to fabricate novel nanostructures.
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Affiliation(s)
- Zhexiao Wang
- Anhui Province Key Laboratory of Environment-friendly Polymer Materials, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601 (P. R. China)
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Markov V, Kriksin Y, Erukhimovich I, ten Brinke G. Perpendicular lamellar-in-lamellar and other planar morphologies in A-b-(B-b-A)2-b-C and (B-b-A)2-b-C ternary multiblock copolymer melts. J Chem Phys 2013; 139:084906. [PMID: 24007036 DOI: 10.1063/1.4818872] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ordered planar morphologies in A-b-(B-b-A)2-b-C and (B-b-A)2-b-C terpolymer melts are studied within the framework of the self-consistent field theory for volume fractions of components A, B, and C in the ratio 1:1:2 and the Flory-Huggins interaction parameters satisfying χ(AB) = 2χ(AC). The stable phases turn out to be the disordered, hexagonal, parallel lamellar-in-lamellar L∥ (including the simple lamellar) as well as non-shifted and shifted (L⊥ and SL⊥) perpendicular lamellar-in-lamellar morphologies. Depending on the value of the ratio r = Θ(AB)/Θ(BC), where Θ is a characteristic temperature of the units involved, different sequences of phase transitions are shown to occur. The hexagonal phase is characteristic for r ≅ 1. The L⊥ and SL⊥ morphologies occur at weak and intermediate segregations whereas the L∥ morphology appears for stronger degrees of segregation. For (B-b-A)2-b-C a reduction in r favors the shifted SL⊥ phase over the non-shifted L⊥ one, whereas for A-b-(B-b-A)2-b-C we find re-entrant phase transitions SL⊥ - L⊥. The physics determining the particular phase behavior is discussed.
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Affiliation(s)
- V Markov
- Department of Polymer Chemistry and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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12
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ten Brinke G, Loos K, Vukovic I, du Sart GG. Hierarchical self-assembly of two-length-scale multiblock copolymers. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:284110. [PMID: 21709325 DOI: 10.1088/0953-8984/23/28/284110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The self-assembly in diblock copolymer-based supramolecules, obtained by hydrogen bonding short side chains to one of the blocks, as well as in two-length-scale linear terpolymers results in hierarchical structure formation. The orientation of the different domains, e.g. layers in the case of a lamellar-in-lamellar structure, is determined by the molecular architecture, graft-like versus linear, and the relative magnitude of the interactions involved. In both cases parallel and perpendicular arrangements have been observed. The comb-shaped supramolecules approach is ideally suited for the preparation of nanoporous structures. A bicontinuous morphology with the supramolecular comb block forming the channels was finally achieved by extending the original approach to suitable triblock copolymer-based supramolecules.
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Affiliation(s)
- Gerrit ten Brinke
- Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
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13
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Xu Y, Li W, Qiu F, Yang Y, Shi AC. The influence of volume fractions on the phase behaviors of linear A(BC)nBA′ multiblock terpolymers. Phys Chem Chem Phys 2011; 13:12421-8. [DOI: 10.1039/c1cp20633h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Xu Y, Li W, Qiu F, Yang Y, Shi AC. Stability of Perpendicular and Parallel Lamellae within Lamellae of Multiblock Terpolymers. J Phys Chem B 2010; 114:14875-83. [DOI: 10.1021/jp1068335] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuci Xu
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, China, and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Weihua Li
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, China, and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Feng Qiu
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, China, and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Yuliang Yang
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, China, and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - An-Chang Shi
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada, L8S 4M1
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15
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Subbotin A, Markov V, ten Brinke G. Parallel versus Perpendicular Lamellar-within-Lamellar Self-Assembly of A-b-(B-b-A)n-b-C Ternary Multiblock Copolymer Melts. J Phys Chem B 2010; 114:5250-6. [DOI: 10.1021/jp9113943] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Subbotin
- Department of Polymer Chemistry and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow 119991, Russia
| | - V. Markov
- Department of Polymer Chemistry and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow 119991, Russia
| | - G. ten Brinke
- Department of Polymer Chemistry and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow 119991, Russia
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16
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Wang L, Lin J, Zhang L. Hierarchically Ordered Microstructures Self-Assembled from A(BC)n Multiblock Copolymers. Macromolecules 2010. [DOI: 10.1021/ma902143g] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Liquan Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiaping Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Liangshun Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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17
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Kim HC, Park SM, Hinsberg WD. Block Copolymer Based Nanostructures: Materials, Processes, and Applications to Electronics. Chem Rev 2009; 110:146-77. [DOI: 10.1021/cr900159v] [Citation(s) in RCA: 820] [Impact Index Per Article: 54.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ho-Cheol Kim
- IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120
| | - Sang-Min Park
- IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120
| | - William D. Hinsberg
- IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120
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18
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Kriksin YA, Erukhimovich IY, Smirnova YG, Khalatur PG, ten Brinke G. Nonmonotonic incommensurability effects in lamellar-in-lamellar self-assembled multiblock copolymers. J Chem Phys 2009; 130:204901. [DOI: 10.1063/1.3138903] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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19
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Matsushita Y, Takano A, Hayashida K, Asari T, Noro A. Hierarchical nanophase-separated structures created by precisely-designed polymers with complexity. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.02.047] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wang L, Lin J, Zhang L. Hierarchically ordered microstructures self-assembled from comb-coil block copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:4735-4742. [PMID: 19256461 DOI: 10.1021/la803908e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Using the real-space implemented self-consistent field theory, we undertook an investigation on the hierarchical self-assembly behaviors of comb-coil block copolymers. The comb-coil block copolymers can self-assemble into hierarchical microstructures with two different length scales. Various structure-within-structure morphologies, such as parallel and perpendicular lamella-within-lamella, cylinder-within-lamella, lamella-within-cylinder, and cylinder-within-cylinder, were observed. In the hierarchical structures, the large-length-scale structures are produced by segregation between the coil blocks and comb blocks, and the small-length-scale structures are formed by microphase separation within the comb blocks. Effects of interaction strength and coil block length on the hierarchical phase behaviors were studied, and the phase diagram was mapped out accordingly. Furthermore, the large-length-scale lamellar period as a function of interaction strength was examined. It was found the lamellar periods are greatly dependent on interaction strengths.
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Affiliation(s)
- Liquan Wang
- Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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21
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Fleury G, Bates FS. Structure and Properties of Hexa- and Undecablock Terpolymers with Hierarchical Molecular Architectures. Macromolecules 2009. [DOI: 10.1021/ma900183p] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guillaume Fleury
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
| | - Frank S. Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
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22
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Zhang L, Lin J. Hierarchically Ordered Nanocomposites Self-Assembled from Linear-Alternating Block Copolymer/Nanoparticle Mixture. Macromolecules 2009. [DOI: 10.1021/ma802539q] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Liangshun Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237,China
| | - Jiaping Lin
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237,China
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23
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Klymko T, Subbotin A, ten Brinke G. Lamellar-in-lamellar structure of binary linear multiblock copolymers. J Chem Phys 2008; 129:114902. [DOI: 10.1063/1.2976565] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Kriksin YA, Erukhimovich IY, Khalatur PG, Smirnova YG, ten Brinke G. Nonconventional morphologies in two-length scale block copolymer systems beyond the weak segregation theory. J Chem Phys 2008; 128:244903. [PMID: 18601379 DOI: 10.1063/1.2937138] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The order-disorder and order-order transitions (ODT and OOT) in the linear multiblock copolymers with two-length scale architecture A(fmN)(B(N2)A(N2))(n)B((1-f)mN) are studied under intermediate cooling below the ODT critical point where a nonconventional sequence of the OOTs was predicted previously [Smirnova et al., J. Chem. Phys. 124, 054907 (2006)] within the weak segregation theory (WST). To describe the ordered morphologies appearing in block copolymers (BCs) under cooling, we use the pseudospectral version of the self-consistent field theory (SCFT) with some modifications providing a good convergence speed and a high precision of the solution due to using the Ng iterations [J. Chem. Phys. 61, 2680 (1974)] and a reasonable choice of the predefined symmetries of the computation cell as well as initial guess for the iterations. The WST predicted sequence of the phase transitions is found to hold if the tails of the BCs under consideration are symmetric enough (mid R:0.5-fmid R:</=0.05); the quantitative agreement between the WST and SCFT phase diagrams is reasonable in a narrow (both in f and chi=chiN) region close to the critical point, though. For mid R:0.5-fmid R:>0.05, a large region of the face-centered cubic phase stability is found (up to our knowledge, first within the SCFT framework) inside of the body-centered cubic phase stability region. Occurrence of the two-dimensional and three-dimensional phases with the micelles formed, unlike the conventional diblock copolymers, by the longer (rather than shorter) tails, and its relationship to the BC architecture is first described in detail. The calculated spectra of the ordered phases show that nonmonotonous temperature dependence of the secondary peak scattering intensities accompanied by their vanishing and reappearance is rather a rule than exception.
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Affiliation(s)
- Yury A Kriksin
- Institute for Mathematical Modeling, RAS, Moscow 125047, RussiaInstitute of Organoelement Compounds, RAS, Moscow 119991, Russia
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25
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Huang CI, Chen CM. Hierarchical Structure-Within-Structure Morphologies in A2-star-(B-alt-C) Molecules. Chemphyschem 2007; 8:2588-94. [DOI: 10.1002/cphc.200700390] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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