1
|
Wang Y, Mou X, Ji Y, Pan F, Li S. Interaction of Macromolecular Chain with Phospholipid Membranes in Solutions: A Dissipative Particle Dynamics Simulation Study. Molecules 2023; 28:5790. [PMID: 37570760 PMCID: PMC10420874 DOI: 10.3390/molecules28155790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
The interaction between macromolecular chains and phospholipid membranes in aqueous solution was investigated using dissipative particle dynamics simulations. Two cases were considered, one in which the macromolecular chains were pulled along parallel to the membrane surfaces and another in which they were pulled vertical to the membrane surfaces. Several parameters, including the radius of gyration, shape factor, particle number, and order parameter, were used to investigate the interaction mechanisms during the dynamics processes by adjusting the pulling force strength of the chains. In both cases, the results showed that the macromolecular chains undergo conformational transitions from a coiled to a rod-like structure. Furthermore, the simulations revealed that the membranes can be damaged and repaired during the dynamic processes. The role of the pulling forces and the adsorption interactions between the chains and membranes differed in the parallel and perpendicular pulling cases. These findings contribute to our understanding of the interaction mechanisms between macromolecules and membranes, and they may have potential applications in biology and medicine.
Collapse
Affiliation(s)
- Yuane Wang
- Department of Physics, Wenzhou University, Wenzhou 325035, China; (Y.W.); (X.M.); (Y.J.)
| | - Xuankang Mou
- Department of Physics, Wenzhou University, Wenzhou 325035, China; (Y.W.); (X.M.); (Y.J.)
| | - Yongyun Ji
- Department of Physics, Wenzhou University, Wenzhou 325035, China; (Y.W.); (X.M.); (Y.J.)
| | - Fan Pan
- School of Data Science and Artificial Intelligence, Wenzhou University of Technology, Wenzhou 325035, China
| | - Shiben Li
- Department of Physics, Wenzhou University, Wenzhou 325035, China; (Y.W.); (X.M.); (Y.J.)
| |
Collapse
|
2
|
Martin JM, Li W, Delaney KT, Fredrickson GH. SCFT Study of Diblock Copolymer Melts in Electric Fields: Selective Stabilization of Orthorhombic Fddd Network Phase. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00394] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
3
|
|
4
|
Zhang Q, Xu R, Kan D, He X. Molecular dynamics simulation of electric-field-induced self-assembly of diblock copolymers. J Chem Phys 2016; 144:234901. [DOI: 10.1063/1.4953689] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Qiuzhi Zhang
- Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Rui Xu
- Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Di Kan
- Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Xuehao He
- Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| |
Collapse
|
5
|
Kan D, He X. Tuning phase structures of a symmetrical diblock copolymer with a patterned electric field. SOFT MATTER 2016; 12:4449-4456. [PMID: 27102422 DOI: 10.1039/c5sm03154k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Electric fields can induce the orientation of the phase interfaces of block copolymers and provide a potential method to tune polymer phase structures for nanomaterial manufacture. In this work, we applied self-consistent field theory to study the self-assembly of a diblock copolymer confined between two parallel neutral substrates on which a set of electrodes was imposed to form a patterned electric field. The results showed that an alternatively distributed electric field can induce the formation of a parallel lamellar phase structure, which exists stably only in the system with selective substrates. The phase structure was proved to be sensitive to the characteristics of the electric field distribution, such as the strength of the electric field, the size and position of the electrodes, and the corresponding phase diagram was calculated in detail. The transition pathway of the phase structure from the perpendicular layered phase to the parallel layered phase was further analysed using the minimum energy path method. It is shown that the path and the active energy barrier of the phase transition depend on the electric field strength. Compound electric field patterns that can be designed to control the formation of novel and complex microphase structures were also examined.
Collapse
Affiliation(s)
- Di Kan
- Department of Chemistry, School of Science, Tianjin University, 300072 Tianjin, China.
| | - Xuehao He
- Department of Chemistry, School of Science, Tianjin University, 300072 Tianjin, China.
| |
Collapse
|
6
|
Wu J, Wang X, Ji Y, He L, Li S. Phase diagrams of diblock copolymers in electric fields: a self-consistent field theory study. Phys Chem Chem Phys 2016; 18:10309-19. [PMID: 27020849 DOI: 10.1039/c5cp08030d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigated the phase diagrams of diblock copolymers in external electrostatic fields by using real-space self-consistent field theory. The lamella, cylinder, sphere, and ellipsoid structures were observed and analyzed by their segment distributions, which were arranged to two types of phase diagrams to examine the phase behavior in weak and strong electric fields. One type was constructed on the basis of Flory-Huggins interaction parameter and volume fraction. We identified an ellipsoid structure with a body-centered cuboid arrangement as a stable phase and discussed the shift of phase boundaries in the electric fields. The other type of phase diagrams was established on the basis of the dielectric constants of two blocks in the electric fields. We then determined the regions of ellipsoid phase in the phase diagrams to examine the influence of dielectric constants on the phase transition between ellipsoidal and hexagonally packed cylinder phases. A general agreement was obtained by comparing our results with those described in previous experimental and theoretical studies.
Collapse
Affiliation(s)
- Ji Wu
- Department of Physics, Wenzhou University, Wenzhou, Zhejiang 325035, China.
| | | | | | | | | |
Collapse
|
7
|
Mukherjee A, Mukherjee R, Ankit K, Bhattacharya A, Nestler B. Influence of substrate interaction and confinement on electric-field-induced transition in symmetric block-copolymer thin films. Phys Rev E 2016; 93:032504. [PMID: 27078402 DOI: 10.1103/physreve.93.032504] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Indexed: 11/07/2022]
Abstract
In the present work, we study morphologies arising due to competing substrate interaction, electric field, and confinement effects on a symmetric diblock copolymer. We employ a coarse-grained nonlocal Cahn-Hilliard phenomenological model taking into account the appropriate contributions of substrate interaction and electrostatic field. The proposed model couples the Ohta-Kawasaki functional with Maxwell equation of electrostatics, thus alleviating the need for any approximate solution used in previous studies. We calculate the phase diagram in electric-field-substrate strength space for different film thicknesses. In addition to identifying the presence of parallel, perpendicular, and mixed lamellae phases similar to analytical calculations, we also find a region in the phase diagram where hybrid morphologies (combination of two phases) coexist. These hybrid morphologies arise either solely due to substrate affinity and confinement or are induced due to the applied electric field. The dependence of the critical fields for transition between the various phases on substrate strength, film thickness, and dielectric contrast is discussed. Some preliminary 3D results are also presented to corroborate the presence of hybrid morphologies.
Collapse
Affiliation(s)
- Arnab Mukherjee
- Institute of Materials Processes, Karlsruhe University of Applied Sciences, Moltkestrasse 30, 76133, Karlsruhe, Germany.,Institute of Applied Materials-Computational Materials Science, Karlsruhe Institute of Technology, Haid-und-Neu strasse 7, 76131, Karlsruhe, Germany
| | - Rajdip Mukherjee
- Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, 208016, Kanpur, India
| | - Kumar Ankit
- Institute of Applied Materials-Computational Materials Science, Karlsruhe Institute of Technology, Haid-und-Neu strasse 7, 76131, Karlsruhe, Germany
| | - Avisor Bhattacharya
- Institute of Materials Processes, Karlsruhe University of Applied Sciences, Moltkestrasse 30, 76133, Karlsruhe, Germany.,Institute of Applied Materials-Computational Materials Science, Karlsruhe Institute of Technology, Haid-und-Neu strasse 7, 76131, Karlsruhe, Germany
| | - Britta Nestler
- Institute of Materials Processes, Karlsruhe University of Applied Sciences, Moltkestrasse 30, 76133, Karlsruhe, Germany.,Institute of Applied Materials-Computational Materials Science, Karlsruhe Institute of Technology, Haid-und-Neu strasse 7, 76131, Karlsruhe, Germany
| |
Collapse
|
8
|
Liu J, Wang Q, Liu C, Chang H, Tian H, Geng Y, Yan D. Melt-crystallized α phase nanofibril films of monodisperse poly(9,9-dioctylfluorene). POLYMER 2015. [DOI: 10.1016/j.polymer.2015.03.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|