1
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Avalos E, Teramoto T, Hirai Y, Yabu H, Nishiura Y. Controlling the Formation of Polyhedral Block Copolymer Nanoparticles: Insights from Process Variables and Dynamic Modeling. ACS OMEGA 2024; 9:17276-17288. [PMID: 38645350 PMCID: PMC11025090 DOI: 10.1021/acsomega.3c10302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 02/20/2024] [Accepted: 02/26/2024] [Indexed: 04/23/2024]
Abstract
This study delves into the formation of nanoscale polyhedral block copolymer particles (PBCPs) exhibiting cubic, octahedral, and variant geometries. These structures represent a pioneering class that has never been fabricated previously. PBCP features distinct variations in curvature on the outer surface, aligning with the edges and corners of polyhedral shapes. This characteristic sharply contrasts with previous block copolymers (BCPs), which displayed a smooth spherical surface. The emergence of these cornered morphologies presents an intriguing and counterintuitive phenomenon and is linked to process parameters, such as evaporation rates and initial concentration, while keeping other variables constant. Using a system of coupled Cahn-Hillard (CCH) equations, we uncover the mechanisms driving polyhedral particle formation, emphasizing the importance of controlling relaxation parameters for shape variable u and microphase separation v. This unconventional approach, differing from traditional steepest descent method, allows for precise control and diverse polyhedral particle generation. Accelerating the shape variable u proves crucial for expediting precipitation and aligns with experimental observations. Employing the above theoretical model, we achieve shape predictions for particles and the microphase separation within them, which overcomes the limitations of ab initio computations. Additionally, a numerical stability analysis discerns the transient nature versus local minimizer characteristics. Overall, our findings contribute to understanding the complex interplay between process variables and the morphology of polyhedral BCP nanoparticles.
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Affiliation(s)
- Edgar Avalos
- Advanced
Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Takashi Teramoto
- Faculty
of Data Science, Kyoto Women’s University, 35 Kitahiyoshi-cho, Imakumano, Higashiyama-ku, Kyoto 605-8501, Japan
| | - Yutaro Hirai
- Advanced
Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Hiroshi Yabu
- Advanced
Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Yasumasa Nishiura
- Advanced
Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
- Research
Center of Mathematics for Social Creativity, Research Institute for
Electronic Science, Hokkaido University, N12W7, Kita-Ward, Mid-Campus Open
Laboratory Building No. 2, Sapporo 060-0812, Japan
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2
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Sun M, Chen W, Qin L, Xie XM. The Effect of Colloidal Nanoparticles on Phase Separation of Block and Heteroarm Star Copolymers Confined between Polymer Brushes. MATERIALS (BASEL, SWITZERLAND) 2024; 17:804. [PMID: 38399056 PMCID: PMC10890131 DOI: 10.3390/ma17040804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/28/2024] [Accepted: 02/04/2024] [Indexed: 02/25/2024]
Abstract
The effect of colloidal nanoparticles on the phase changes of the amphiphilic AB linear diblock, A1A2B, and A2B heteroarm star copolymers confined between two polymer brush substrates was investigated by using a real-space self-consistent field theory. By changing the concentrations of nanoparticles and polymer brushes, the phase structure of the amphiphilic AB copolymer transforms from lamellar to core-shell hexagonal phase to cylinder phase. The pattern of A2B heteroarm star copolymer changes from core-shell hexagonal phases to lamellar phases and the layer decreases when increasing the density of the polymer brushes. The results showed that the phase behavior of the system is strongly influenced by the polymer brush architecture and the colloidal nanoparticle numbers. The colloidal nanoparticles and the soft confined surface of polymer brushes make amphiphilic AB copolymers easier to form ordered structures. The dispersion of the nanoparticles was also investigated in detail. The soft surfaces of polymer brushes and the conformation of the block copolymers work together to force the nanoparticles to disperse evenly. It will give helpful guidance for making some new functional materials by nano etching technology, nano photoresist, and nanoprinting.
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Affiliation(s)
- Minna Sun
- Beijing Key Laboratory for Sensors, Beijing Information Science and Technology University, Beijing 100192, China;
- Beijing Key Laboratory for Optoelectronic Measurement Technology, Beijing Information Science and Technology University, Beijing 100192, China;
- Key Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Wenyu Chen
- Beijing Key Laboratory for Optoelectronic Measurement Technology, Beijing Information Science and Technology University, Beijing 100192, China;
| | - Lei Qin
- Beijing Key Laboratory for Sensors, Beijing Information Science and Technology University, Beijing 100192, China;
- Beijing Key Laboratory for Optoelectronic Measurement Technology, Beijing Information Science and Technology University, Beijing 100192, China;
| | - Xu-Ming Xie
- Key Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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3
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Zhang L, Yang J, Li W. Emergence of Multi-strand Helices from the Self-Assembly of AB-Type Multiblock Copolymer under Cylindrical Confinement. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lixun Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Key Laboratory of Computational Physical Sciences, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Junying Yang
- State Key Laboratory of Molecular Engineering of Polymers, Key Laboratory of Computational Physical Sciences, Department of Macromolecular Science, Fudan University, Shanghai 200433, 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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4
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Yang J, Dong Q, Liu M, Li W. Universality and Specificity in the Self-Assembly of Cylinder-Forming Block Copolymers under Cylindrical Confinement. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02504] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junying Yang
- State Key Laboratory of Molecular Engineering of Polymers, Key Laboratory of Computational Physical Sciences, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Qingshu Dong
- State Key Laboratory of Molecular Engineering of Polymers, Key Laboratory of Computational Physical Sciences, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Meijiao Liu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, 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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5
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Ok S, Vayer M, Sinturel C. A decade of innovation and progress in understanding the morphology and structure of heterogeneous polymers in rigid confinement. SOFT MATTER 2021; 17:7430-7458. [PMID: 34341814 DOI: 10.1039/d1sm00522g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
When confined in nanoscale domains, polymers generally encounter changes in their structural, thermodynamics and dynamics properties compared to those in the bulk, due to the high amount of polymer/wall interfaces and limited amount of matter. The present review specifically deals with the confinement of heterogeneous polymers (i.e. polymer blends and block copolymers) in rigid nanoscale domains (i.e. bearing non-deformable solid walls) where the processes of phase separation and self-assembly can be deeply affected. This review focuses on the innovative contributions of the last decade (2010-2020), giving a summary of the new insights and understanding gained in this period. We conclude this review by giving our view on the most thriving directions for this topic.
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Affiliation(s)
- Salim Ok
- Petroleum Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat, 13109, Kuwait.
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6
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Chen K, Wang F, Liu M, Wang X. Tunable helical structures formed by blending
ABC
triblock copolymers and C homopolymers in nanopores. POLYM INT 2021. [DOI: 10.1002/pi.6253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ka Chen
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci‐Tech University Hangzhou China
| | - Feng Wang
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci‐Tech University Hangzhou China
| | - Meijiao Liu
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci‐Tech University Hangzhou China
- State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai China
| | - Xinping Wang
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci‐Tech University Hangzhou China
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7
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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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8
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Yang T, Xue H, Cao R, Li W. Formation of homochiral helical nanostructures in diblock copolymers under the confinement of nanopores. Phys Chem Chem Phys 2019; 21:7067-7074. [DOI: 10.1039/c9cp00227h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The control of the homochirality of helical structures formed in achiral systems is of great interest as it is helpful for understanding the origin of homochirality in life.
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Affiliation(s)
- Tao Yang
- Ningxia Key Laboratory of Information Sensing & Intelligent Desert
- School of Physics and Electronic-Electrical Engineering
- Ningxia University
- Yinchuan 750021
- China
| | - Haiyan Xue
- Ningxia Key Laboratory of Information Sensing & Intelligent Desert
- School of Physics and Electronic-Electrical Engineering
- Ningxia University
- Yinchuan 750021
- China
| | - Ruifang Cao
- Xinhua College of Ningxia University
- Yinchuan 750021
- China
| | - Weihua Li
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
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9
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Yau MY, Gunkel I, Hartmann-Azanza B, Akram W, Wang Y, Thurn-Albrecht T, Steinhart M. Semicrystalline Block Copolymers in Rigid Confining Nanopores. Macromolecules 2017; 50:8637-8646. [PMID: 30174341 PMCID: PMC6114844 DOI: 10.1021/acs.macromol.7b01567] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 09/18/2017] [Indexed: 02/04/2023]
Abstract
We have investigated PLLA crystallization in lamellae-forming PS-b-PLLA confined to straight cylindrical nanopores under weak confinement (nanopore diameter D/equilibrium PS-b-PLLA period L0 ≥ 4.8). Molten PS-b-PLLA predominantly forms concentric lamellae along the nanopores, but intertwined helices occur even for D/L0 ≈ 7.3. Quenching PS-b-PLLA melts below TG(PS) results in PLLA cold crystallization strictly confined by the vitrified PS domains. Above TG(PS), PLLA crystallization is templated by the PS-b-PLLA melt domain structure in the nanopore centers, while adsorption on the nanopore walls stabilizes the outermost cylindrical PS-b-PLLA shell. In between, the nanoscopic PS-b-PLLA melt domain structure apparently ripens to reduce frustrations transmitted from the outermost immobilized PS-b-PLLA layer. The onset of PLLA crystallization catalyzes the ripening while transient ripening states are arrested by advancing PLLA crystallization. Certain helical structure motifs persist PLLA crystallization even if PS is soft. The direction of fastest PLLA crystal growth is preferentially aligned with the nanopore axes to the same degree as for PLLA homopolymer, independent of whether PS is vitreous or soft.
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Affiliation(s)
- Man Yan
Eric Yau
- Institut
für Chemie neuer Materialien, Universität
Osnabrück, Barbarastr.7, 49076 Osnabrück, Germany
| | - Ilja Gunkel
- Institut
für Physik, Martin-Luther-Universität
Halle-Wittenberg, D-06099 Halle, Germany
| | - Brigitte Hartmann-Azanza
- Institut
für Chemie neuer Materialien, Universität
Osnabrück, Barbarastr.7, 49076 Osnabrück, Germany
| | - Wajiha Akram
- Institut
für Chemie neuer Materialien, Universität
Osnabrück, Barbarastr.7, 49076 Osnabrück, Germany
| | - Yong Wang
- State
Key Lab of Materials-Oriented Chemical Engineering; College of Chemical
Engineering, Nanjing Tech University, Xin Mofan Road 5, Nanjing 210009, Jiangsu, China
| | - Thomas Thurn-Albrecht
- Institut
für Physik, Martin-Luther-Universität
Halle-Wittenberg, D-06099 Halle, Germany
| | - Martin Steinhart
- Institut
für Chemie neuer Materialien, Universität
Osnabrück, Barbarastr.7, 49076 Osnabrück, Germany
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10
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Liu M, Li W, Wang X. Order-order transitions of diblock copolymer melts under cylindrical confinement. J Chem Phys 2017; 147:114903. [PMID: 28938804 DOI: 10.1063/1.5004181] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The self-assembly behavior of AB diblock copolymers under cylindrical confinement is investigated using the self-consistent field theory. We focus on the impact of the confinement on the order-order transitions of three-dimensional morphologies by constructing two types of phase diagrams with continuously varying block compositions. One type is with respect to the block composition and the immiscibility parameter for various pore sizes, in which the order-order transitions are shown to be strongly impacted by the pore curvature and thus largely different from the bulk ones. Note that the morphologies are categorized by the intrinsical geometry of their domains, i.e., that helical morphologies are regarded as one type of cylindrical phase. Another type of phase diagram is with respect to the block composition and the pore diameter, which exhibits a number of interesting order-order transitions, especially the transition sequence from a straight line of spheres, to one straight cylinder and stacked disks as the pore diameter increases. A critical point is observed at which the stability region of the straight cylinder vanishes and thereby the spheres transform into the stacked disks continuously. The mechanism of these phase transitions is rationalized in the context of the bulk factors as well as an additional factor, i.e., the competition between the spontaneous curvature of the copolymer and the imposed curvature by the nanopore.
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Affiliation(s)
- Meijiao Liu
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, 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
| | - Xinping Wang
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
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11
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Self-assembly of tiling-forming ABC star triblock copolymers in cylindrical nanotubes: A study of self-consistent field theory. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.05.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Avalos E, Higuchi T, Teramoto T, Yabu H, Nishiura Y. Frustrated phases under three-dimensional confinement simulated by a set of coupled Cahn-Hilliard equations. SOFT MATTER 2016; 12:5905-5914. [PMID: 27337660 DOI: 10.1039/c6sm00429f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We numerically study a set of coupled Cahn-Hilliard equations as a means to find morphologies of diblock copolymers in three-dimensional spherical confinement. This approach allows us to find a variety of energy minimizers including rings, tennis balls, Janus balls and multipods among several others. Phase diagrams of confined morphologies are presented. We modify the size of the interface between microphases to control the number of holes in multipod morphologies. Comparison to experimental observation by transmission electron microtomography of multipods in polystyrene-polyisoprene diblock copolymers is also presented.
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Affiliation(s)
- Edgar Avalos
- WPI-Research Center, Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Takeshi Higuchi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Takashi Teramoto
- Department of Mathematics, Asahikawa Medical University, 2-1-1-1, Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Hiroshi Yabu
- WPI-Research Center, Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Yasumasa Nishiura
- WPI-Research Center, Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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13
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Simulation study on the assembly of rod-coil diblock copolymers within coil-selective nanoslits. E-POLYMERS 2016. [DOI: 10.1515/epoly-2015-0275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractDissipative particle dynamics simulations are performed to study the self-assembly of rod-coil (RC) diblock copolymers confined in a slit with two coil-selective surfaces. The effect of rod length and slit thickness on the assembly structure is investigated. A morphological phase diagram as a function of slit thickness and rod length is presented. We observe several ordered structures, such as perpendicular cylinders, parallel cylinders, and puck-shaped structure. In the assembly structures, long-range rod-rod orientational order is observed when the rod length exceeds a critical rod length. Our results show that the coil-selective slit influences the assembly structure as well as the rod orientation of RC diblock copolymers.
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14
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Xu Y, Shi K, Zhao S, Guo X, Wang J. Block length determines the adsorption dynamics mode of triblock copolymers to a hydrophobic surface. Chem Eng Sci 2016. [DOI: 10.1016/j.ces.2015.11.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Huang JH, Wu JJ, Huang XW. Self-assembly of symmetric rod-coil diblock copolymers in cylindrical nanopore. RSC Adv 2016. [DOI: 10.1039/c6ra22122j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Self-assembly of rod-coil (RC) symmetric diblock copolymers (DBCs) in a cylindrical nanopore is investigated by performing dissipative particle dynamics simulation.
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Affiliation(s)
- Jian-Hua Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Jia-Jun Wu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xiao-Wei Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
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16
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Effect of curvature on properties of diblock copolymers confined between two coaxial cylinders: 2. Domain adjustment in a curved bilayer. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.10.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Kipnusu WK, Elmahdy MM, Mapesa EU, Zhang J, Böhlmann W, Smilgies DM, Papadakis CM, Kremer F. Structure and Dynamics of Asymmetric Poly(styrene-b-1,4-isoprene) Diblock Copolymer under 1D and 2D Nanoconfinement. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12328-12338. [PMID: 25660102 DOI: 10.1021/am506848s] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The impact of 1- and 2-dimensional (2D) confinement on the structure and dynamics of poly(styrene-b-1,4-isoprene) P(S-b-I) diblock copolymer is investigated by a combination of Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), Grazing-Incidence Small-Angle X-ray Scattering (GISAXS), and Broadband Dielectric Spectroscopy (BDS). 1D confinement is achieved by spin coating the P(S-b-I) to form nanometric thin films on silicon substrates, while in the 2D confinement, the copolymer is infiltrated into cylindrical anodized aluminum oxide (AAO) nanopores. After dissolving the AAO matrix having mean pore diameter of 150 nm, the SEM images of the exposed P(S-b-I) show straight nanorods. For the thin films, GISAXS and AFM reveal hexagonally packed cylinders of PS in a PI matrix. Three dielectrically active relaxation modes assigned to the two segmental modes of the styrene and isoprene blocks and the normal mode of the latter are studied selectively by BDS. The dynamic glass transition, related to the segmental modes of the styrene and isoprene blocks, is independent of the dimensionality and the finite sizes (down to 18 nm) of confinement, but the normal mode is influenced by both factors with 2D geometrical constraints exerting greater impact. This reflects the considerable difference in the length scales on which the two kinds of fluctuations take place.
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Affiliation(s)
- Wycliffe K Kipnusu
- †Institute of Experimental Physics I, University of Leipzig, Linnéstraße 5, 04103 Leipzig, Germany
| | - Mahdy M Elmahdy
- †Institute of Experimental Physics I, University of Leipzig, Linnéstraße 5, 04103 Leipzig, Germany
- ‡Department of Physics, Mansoura University, Mansoura 35516, Egypt
| | - Emmanuel U Mapesa
- †Institute of Experimental Physics I, University of Leipzig, Linnéstraße 5, 04103 Leipzig, Germany
| | - Jianqi Zhang
- ¶Physik-Department, Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Winfried Böhlmann
- §Institute for Experimental Physics II, University of Leipzig, Linnéstraße 5, 04103 Leipzig, Germany
| | - Detlef-M Smilgies
- ∥Cornell High Energy Synchrotron Source (CHESS), Wilson Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Christine M Papadakis
- ¶Physik-Department, Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Friedrich Kremer
- †Institute of Experimental Physics I, University of Leipzig, Linnéstraße 5, 04103 Leipzig, Germany
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18
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Zhang T, Deng H, Yang T, Li W. Defective morphologies kinetically formed in diblock copolymers under the cylindrical confinement. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.03.059] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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He X, Zou Z, Kan D, Liang H. Self-assembly of diblock copolymer confined in an array-structure space. J Chem Phys 2015; 142:101912. [PMID: 25770501 DOI: 10.1063/1.4907532] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The combination of top-down and bottom-up technologies is an effective method to create the novel nanostructures with long range order in the field of advanced materials manufacture. In this work, we employed a polymeric self-consistent field theory to investigate the pattern formation of diblock copolymer in a 2D confinement system designed by filling pillar arrays with various 2D shapes such as squares, rectangles, and triangles. Our simulation shows that in such confinement system, the microphase structure of diblock copolymer strongly depends on the pitch, shape, size, and rotation of the pillar as well as the surface field of confinement. The array structures can not only induce the formation of new phase patterns but also control the location and orientation of pattern structures. Finally, several methods to tune the commensuration and frustration of array-structure confinement are proposed and examined.
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Affiliation(s)
- Xuehao He
- Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Zhixiang Zou
- Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Di Kan
- Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Haojun Liang
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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20
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Zhang X, Wang L, Zhang L, Lin J, Jiang T. Controllable hierarchical microstructures self-assembled from multiblock copolymers confined in thin films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:2533-2544. [PMID: 25654644 DOI: 10.1021/la503985u] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hierarchical microstructures self-assembled from A(BC)n multiblock copolymers confined between two solid surfaces were explored by dissipative particle dynamics simulations. The strategy using confinement allows us to generate hierarchical microstructures with various numbers and different orientations of small-length-scale lamellae. Except for the hierarchical lamellar microstructures with parallel or perpendicular arrangements of small-length-scale lamellae, the coexistence of two different hierarchical lamellae was also discovered by varying the film thickness. The dynamics of hierarchical microstructure formation was further examined. It was found that the formation of the hierarchical microstructures exhibits a stepwise manner where the formation of small-length-scale structures lags behind that of large-length-scale structures. The present work could provide guidance for controllable manufacture of hierarchical microstructures.
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Affiliation(s)
- Xu Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, 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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Hart KE, Abbott LJ, Lísal M, Colina CM. Morphology and molecular bridging in comb- and star-shaped diblock copolymers. J Chem Phys 2014; 141:204902. [DOI: 10.1063/1.4902051] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Kyle E. Hart
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Lauren J. Abbott
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Martin Lísal
- Laboratory of Aerosols Chemistry and Physics, Institute of Chemical Process Fundamentals of the ASCR, v. v. i., Prague, Czech Republic
- Department of Physics, Faculty of Science, J. E. Purkinje University, Ústí n. Lab., Czech Republic
| | - Coray M. Colina
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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22
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Ross CA, Berggren KK, Cheng JY, Jung YS, Chang JB. Three-dimensional nanofabrication by block copolymer self-assembly. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:4386-4396. [PMID: 24706521 DOI: 10.1002/adma.201400386] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 02/20/2014] [Indexed: 06/03/2023]
Abstract
Thin films of block copolymers are widely seen as enablers for nanoscale fabrication of semiconductor devices, membranes, and other structures, taking advantage of microphase separation to produce well-organized nanostructures with periods of a few nm and above. However, the inherently three-dimensional structure of block copolymer microdomains could enable them to make 3D devices and structures directly, which could lead to efficient fabrication of complex heterogeneous structures. This article reviews recent progress in developing 3D nanofabrication processes based on block copolymers.
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Affiliation(s)
- Caroline A Ross
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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23
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Huang JH, Fan ZX, Luo MB. Simulation study on the structure of rod-coil-rod triblock copolymer and nanoparticle mixture within slit. J Chem Phys 2013; 139:204904. [DOI: 10.1063/1.4833135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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24
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Berezkin AV, Kudryavtsev YV. End-Coupling Reactions in Incompatible Polymer Blends: From Droplets to Complex Micelles through Interfacial Instability. Macromolecules 2013. [DOI: 10.1021/ma400700n] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Anatoly V. Berezkin
- Max-Planck Institut für Eisenforschung GmbH, Max-Planck Strasse 1,
40237 Düsseldorf, Germany
| | - Yaroslav V. Kudryavtsev
- Topchiev Institute of Petrochemical
Synthesis, Russian Academy of Sciences,
Leninsky prosp. 29, 119991 Moscow, Russia
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25
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Xu Y, Xie N, Li W, Qiu F, Shi AC. Phase behaviors and ordering dynamics of diblock copolymer self-assembly directed by lateral hexagonal confinement. J Chem Phys 2012. [DOI: 10.1063/1.4765098] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yuci Xu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Nan Xie
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Weihua Li
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Feng Qiu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
- Key Laboratory of Computational Physical Sciences, Ministry of Education of China, Shanghai 200433, China
| | - An-Chang Shi
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
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26
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Li F, Wilker MB, Stein A. Simulation-aided design and synthesis of hierarchically porous membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:7484-7491. [PMID: 22519852 DOI: 10.1021/la300037q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Free-standing silica membranes with hierarchical porosity (ca. 300 nm macropores surrounded by 6-8 nm mesopores) and controllable mesopore architecture were prepared by a dual-templating method, with the structural design aided by mesoscale simulation. To create a two-dimensional, hexagonal macropore array, polymeric colloidal hemisphere arrays were synthesized by a two-step annealing process starting with non-close-packed polystyrene sphere arrays on silicon coated with a sacrificial alumina layer. A silica precursor containing a poly(ethylene) oxide-poly(propylene oxide)-poly(ethylene) oxide (PEO-PPO-PEO) triblock-copolymer surfactant as template for mesopore creation was spin-coated onto the support and aged and then converted into the free-standing membranes by dissolving both templates and the alumina layer. To test the hypothesis that the mesopore architecture may be influenced by confinement of the surfactant-containing precursor solution in the colloidal array and by its interactions with the polymeric colloids, the system was studied theoretically by dissipative particle dynamics (DPD) simulations and experimentally by examining the pore structures of silica membranes via electron microscopy. The DPD simulations demonstrated that, while only tilted columnar structure can be formed through tuning the interaction with the substrate, perfect alignment of 2D hexagonal micelles perpendicular to the plane of the membrane is achievable by confinement between parallel walls that interact preferentially with the hydrophilic components (PEO blocks, silicate, and solvent). The simulations predicted that this alignment could be maintained across a span of up to 10 columns of micelles, the same length scale defined by the colloidal array. In the actual membranes, we manipulated the mesopore alignment by tuning the solvent polarity relative to the polar surface characteristics of the colloidal hemispheres. With methanol as a solvent, columnar mesopores parallel to the substrate were observed; with a methanol-water mixed solvent, individual spherical mesopores were present; and with water as the only solvent, twisted columnar structures were seen.
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Affiliation(s)
- Fan Li
- Department of Chemistry, University of Minnesota, 207 Pleasant St. S.E., Minneapolis, Minnesota 55455, USA
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27
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Chi P, Wang Z, Li B, Shi AC. Soft confinement-induced morphologies of diblock copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11683-11689. [PMID: 21834527 DOI: 10.1021/la202448c] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The self-assembly of diblock copolymers under soft confinement is studied systematically using a simulated annealing method applied to a lattice model of polymers. The soft confinement is realized by the formation of polymer droplets in a poor solvent environment. Multiple sequences of soft confinement-induced copolymer aggregates with different shapes and self-assembled internal morphologies are predicted as functions of solvent-polymer interaction and the monomer concentration. It is discovered that the self-assembled internal morphology of the aggregates is largely controlled by a competition between the bulk morphology of the copolymer and the solvent-polymer interaction, and the shape of the aggregates can be non-spherical when the internal morphology is anisotropic and the solvent-polymer interaction is weak. These results demonstrate that droplets of diblock copolymers formed in poor solvents can be used as a model system to study the self-assembly of copolymers under soft confinement.
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Affiliation(s)
- Peng Chi
- School of Physics and Key Laboratory of Functional Polymer Materials of the Ministry of Education, Nankai University, Tianjin 300071, China
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28
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Chen H, Ruckenstein E. Aggregation of nanoparticles in a block copolymer bilayer. J Colloid Interface Sci 2011; 363:573-8. [PMID: 21875712 DOI: 10.1016/j.jcis.2011.08.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 07/29/2011] [Accepted: 08/01/2011] [Indexed: 10/17/2022]
Abstract
In this paper, we examine, by dissipative particle dynamics (DPD) simulation, the interactions between nanoparticles and block copolymer bilayer membranes. The bilayer has a hydrophobic core and hydrophilic head groups on both sides of the core. Nanoparticles without or with a grafted homopolymer are considered. For the conditions investigated, the single nanoparticles and small aggregates are located at the interfaces of the membrane, namely the interfaces between the hydrophilic domains of the membrane and the solvent as well as at the interface between the hydrophobic and hydrophilic domains of the membrane. The large aggregates are located in the hydrophilic domains. By increasing the length of the homopolymer grafted on the nanoparticles, the size of the aggregates in the membrane decreases. At relatively short DPD step times, the particles aggregate in the solvent. As the time increases, the single particles and aggregates penetrate into the membrane.
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Affiliation(s)
- Houyang Chen
- Department of Chemical and Biological Engineering, State University of New York at Buffalo, Buffalo, NY 14260-4200, USA.
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29
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30
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Sushko ML, Liu J. Surfactant two-dimensional self-assembly under confinement. J Phys Chem B 2011; 115:4322-8. [PMID: 21443214 DOI: 10.1021/jp2003497] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Confinement-induced structural rearrangements in supported self-assembled surfactant layers in aqueous salt solutions are investigated using classical density functional theory. The systematic study of the influence of the nature of electrolyte revealed that 2:1 electrolyte stabilizes the hemicylindrical configuration of ionic surfactant layers, while a confinement-induced transition to a tilted monolayer configuration was found in symmetric 1:1 and 2:2 electrolytes. On the basis of this study, we formulate a general model for the energetics of structural rearrangements in supported surfactant layers. This model provides a basis for directed self-assembly of surfactant templates with desired structure and stability for scalable synthesis of nanocomposite functional materials, templated crystal growth, and biomolecule adsorption.
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Affiliation(s)
- Maria L Sushko
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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31
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Xiao X, Huang Y, Feng J, Liu H, Hu Y. Microphase Separation of a Diblock Copolymer Dispersed in Nanorod Arrays Grafted on a Plate: A Monte Carlo Study. MACROMOL THEOR SIMUL 2011. [DOI: 10.1002/mats.201000064] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Xu Y, Feng J, Chen J, Xiang MH, Song XW, Zhu YW. Microphase Separation of Star-diblock Copolymer Films: a Dissipative Particle Dynamics Simulation. CHINESE J CHEM PHYS 2010. [DOI: 10.1088/1674-0068/23/06/738-744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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Chen H, Ruckenstein E. Structure and particle aggregation in block copolymer-binary nanoparticle composites. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.10.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Xu Y, Song XY, Zhang Z, Wang Y, Chen J, Zhu X. Dissipative Particle Dynamics Simulation of Microscopic Properties in Diblock Copolymer Films. CHINESE J CHEM PHYS 2010. [DOI: 10.1088/1674-0068/23/03/274-280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Pinna M, Hiltl S, Guo X, Böker A, Zvelindovsky AV. Block copolymer nanocontainers. ACS NANO 2010; 4:2845-2855. [PMID: 20496954 DOI: 10.1021/nn901853e] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Using cell dynamics computer simulation, we perform a systematic study of thin block copolymer films around a nanoparticle. Lamellar-, cylinder-, and sphere-forming block copolymers are investigated with respect to different film thicknesses, particle radii, and boundary conditions at the film interfaces. The obtained structures include standing lamellae and cylinders, "onions", cylinder "knitting balls", "golf ball", layered spherical, "virus"-like and mixed morphologies with T-junctions and U-type defects. The kinetics of the structure formation and difference with planar thin films are discussed. Our simulations suggest that novel porous nanocontainers can be formed by the coating of a sacrificial nanobead by a block copolymer layer with a well-controlled nanostructure. In addition, first scanning force microscopy experiments on a model system reveal surface structures similar to those predicted by our simulations.
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Affiliation(s)
- Marco Pinna
- Computational Physics Group, University of Central Lancashire, Preston PR1 2HE, United Kingdom.
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36
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Xu Y, Feng J, Zhang Z, Wang Y, Chen J, Zhu X. Depletion phenomenon in diblock copolymer films: a dissipative particle dynamics simulation. MOLECULAR SIMULATION 2010. [DOI: 10.1080/08927021003664033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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37
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Chen H, Ruckenstein E. Nanoparticle aggregation in the presence of a block copolymer. J Chem Phys 2010; 131:244904. [PMID: 20059112 DOI: 10.1063/1.3280064] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
By employing dissipative particle dynamics simulations, we investigated the cooperative phase behavior of composites containing diblock copolymer molecules and nanoparticles. The nanoparticles and their aggregates are located either in the domains generated by each of the two kinds of segments of the block copolymer and/or at their interface. Various conditions, such as the interactions between nanoparticles, the interactions between them and the segments of the block copolymer, the interactions between the segments of the block copolymer, and the volume ratio of nanoparticles to block copolymer, have been changed to gather information about nanoparticle aggregation and block copolymer/nanoparticles morphology building. The dynamics of nanoparticles aggregation and the evolution of the morphology of the block copolymer have been followed. Our findings have identified two critical repulsive interactions regarding nanoparticle aggregation, one between nanoparticles and the other between the segments of the block copolymer and nanoparticles. Aggregates have been generated for repulsive interactions larger than the former critical value or smaller than the latter one.
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Affiliation(s)
- Houyang Chen
- Department of Chemical and Biological Engineering, State University of New York at Buffalo, Buffalo, New York 14260-4200, USA.
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38
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Ma M, Thomas EL, Rutledge GC, Yu B, Li B, Jin Q, Ding D, Shi AC. Gyroid-Forming Diblock Copolymers Confined in Cylindrical Geometry: A Case of Extreme Makeover for Domain Morphology. Macromolecules 2010. [DOI: 10.1021/ma9022586] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Minglin Ma
- Department of Chemical Engineering
- Institute for Soldier Nanotechnologies
| | - Edwin L. Thomas
- Department of Material Science and Engineering
- Institute for Soldier Nanotechnologies
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39
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Chen H, Ruckenstein E. Relation between molecular orientation and morphology of a multiblock copolymer melt confined in cylindrical nanopores. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.01.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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40
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Pinna M, Guo X, Zvelindovsky AV. Diblock copolymers in a cylindrical pore. J Chem Phys 2009; 131:214902. [DOI: 10.1063/1.3264946] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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41
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42
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Li W, Wickham RA. Influence of the Surface Field on the Self-Assembly of a Diblock Copolymer Melt Confined in a Cylindrical Nanopore. Macromolecules 2009. [DOI: 10.1021/ma900667w] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weihua Li
- The Key Laboratory of Molecular Engineering of Polymers Ministry of Education, China, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Robert A. Wickham
- Department of Physics, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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43
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Wang X, Li S, Chen P, Zhang L, Liang H. Microstructures of lamella-forming diblock copolymer melts under nanorod-array confinements. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.08.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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44
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Jeon SM, Lee Y, Kim JH, Lee JK, Char K, Sohn BH. Internal morphologies of diblock copolymer nanorods fabricated from regular and irregular pores of anodized aluminum oxide templates. REACT FUNCT POLYM 2009. [DOI: 10.1016/j.reactfunctpolym.2009.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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45
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Han Y, Cui J, Jiang W. Effect of Polydispersity on the Self-Assembly Structure of Diblock Copolymers under Various Confined States: A Monte Carlo Study. Macromolecules 2008. [DOI: 10.1021/ma800702f] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuanyuan Han
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China, and Graduate School of the Chinese Academy of Sciences
| | - Jie Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China, and Graduate School of the Chinese Academy of Sciences
| | - Wei Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China, and Graduate School of the Chinese Academy of Sciences
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46
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Feng J, Liu H, Hu Y, Jiang J. Flow‐Induced Morphologies of Diblock Copolymers in a Nanotube Studied by Dissipative Particle Dynamics Simulation. MACROMOL THEOR SIMUL 2008. [DOI: 10.1002/mats.200800005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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47
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Wang Z, Li B, Jin Q, Ding D, Shi AC. Self-Assembly of Cylinder-Forming ABA Triblock Copolymers under Cylindrical Confinement. MACROMOL THEOR SIMUL 2008. [DOI: 10.1002/mats.200800010] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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48
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Yu B, Jin Q, Ding D, Li B, Shi AC. Confinement-Induced Morphologies of Cylinder-Forming Asymmetric Diblock Copolymers. Macromolecules 2008. [DOI: 10.1021/ma702430v] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bin Yu
- College of Physics and Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin, 300071, China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Qinghua Jin
- College of Physics and Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin, 300071, China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Datong Ding
- College of Physics and Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin, 300071, China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Baohui Li
- College of Physics and Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin, 300071, China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - An-Chang Shi
- College of Physics and Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin, 300071, China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
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49
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Sevink GJA, Zvelindovsky AV. Block copolymers confined in a nanopore: Pathfinding in a curving and frustrating flatland. J Chem Phys 2008; 128:084901. [DOI: 10.1063/1.2829406] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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50
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Wang Z, Li B, Jin Q, Ding D, Shi AC. Simulated Annealing Study of Self-Assembly of Symmetric ABA Triblock Copolymers Confined in Cylindrical Nanopores. MACROMOL THEOR SIMUL 2008. [DOI: 10.1002/mats.200700069] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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