scholarly journals Self-Assembly of Bottlebrush Block Copolymers in Selective Solvent: Micellar Structures

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1351
Author(s):  
Inna O. Lebedeva ◽  
Ekaterina B. Zhulina ◽  
Oleg V. Borisov
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Aggregation Number ◽  
Side Chains ◽  
Core Size ◽  
Selective Solvent ◽  
Selective Solvents ◽  
Consistent Field ◽  
Self Consistent Field ◽  
Good Agreement

Block copolymers comprising chemically different bottlebrush blocks can self-assemble in selective solvents giving rise to micellar-like solution nanostructures. The self-consistent field theoretical approach is used for predicting relation between architectural parameters of both bottlebrush blocks (polymerization degrees of the main and side chains, density of grafting of the side chains to the backbone) and structural properties of micelles as well as critical micelle concentration (CMC). As predicted by the theory, replacement of linear blocks by bottlebrush ones with the same degrees of polymerization results in a decrease in the micellar core size (in aggregation number) and extension of the corona, whereas the CMC increases. These theoretical findings are in good agreement with results of computer simulations.

A lattice self-consistent field study of self-assembly of grafted ABA triblock copolymers in a selective solvent

Polymer ◽  
2018 ◽  
Vol 140 ◽  
pp. 278-289 ◽  
Author(s):  
Wenjuan Qiu ◽  
Zheng Wang ◽  
Yuhua Yin ◽  
Run Jiang ◽  
Baohui Li ◽  
...  
Keyword(s):  
Field Study ◽  
Self Assembly ◽  
Triblock Copolymers ◽  
Selective Solvent ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field

scholarly journals Dual responsive PMEEECL–PAE block copolymers: a computational self-assembly and doxorubicin uptake study

RSC Advances ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 3233-3245 ◽  
Author(s):  
Amin Koochaki ◽  
Mohammad Reza Moghbeli ◽  
Sousa Javan Nikkhah ◽  
Alessandro Ianiro ◽  
Remco Tuinier
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
The Self ◽  
Coarse Grained ◽  
Dual Responsive ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Self Consistent Field Theory ◽  
Dynamics Simulations

The self-assembly behaviour of dual-responsive block copolymers and their ability to solubilize the drug doxorubicin is demonstrated using molecular dynamics simulations, coarse-grained force field simulations and self-consistent field theory.

Contact Hole Shrinking of Directed Self-Assembly and Its Application Based on Simulation Approach

2015 ◽  
Vol 15 (10) ◽  
pp. 8183-8186
Author(s):  
Sang-Kon Kim
Keyword(s):  
Self Assembly ◽  
Low Cost ◽  
Process Window ◽  
Optical Proximity Correction ◽  
Lithography Process ◽  
Consistent Field ◽  
Self Consistent Field ◽  
Self Consistent Field Theory ◽  
Thermal Reflow ◽  
Good Agreement

Directed self-assembly (DSA) of block copolymers (BCPs) has become an intense field of study as a complementary technique to conventional lithography for 1×-nm semiconductor patterning. DSA contact hole (C/H) shrinking is a possible implemental technique in the DSA process. In this paper, a DSA C/H shrinking is fully modeled and simulated by using a self-consistent field theory (SCFT). Simulation results show good agreement with experiment results. In terms of this simulation, the potential of DSA C/H shrinking with thermal reflow is integrated into the conventional CMOS lithography process in order to achieve high resolution and pattern density multiplication at a low cost. The optical proximity correction (OPC) of DSA C/H shrinking due to prepattern C/H and pitch can increase process window for DSA C/H shrinking.

Ordering kinetics of lamella-forming block copolymers under the guidance of various external fields studied by dynamic self-consistent field theory

2017 ◽  
Vol 19 (9) ◽  
pp. 6707-6720 ◽  
Author(s):  
Xiaomin Wan ◽  
Tong Gao ◽  
Liangshun Zhang ◽  
Jiaping Lin
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
The Self ◽  
Ordering Kinetics ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Self Consistent Field Theory ◽  
Kinetics Of ◽  
Permanent Field

We theoretically engineer a new scheme, which integrates a permanent field for pattern registration and a dynamic external field for defect annihilation, to direct the self-assembly of block copolymers.

Self-consistent field theory investigation of directed self-assembly in cylindrical confinement

2014 ◽  
Vol 53 (2) ◽  
pp. 142-153 ◽  
Author(s):  
Nabil Laachi ◽  
Kris T. Delaney ◽  
Bongkeun Kim ◽  
Su-Mi Hur ◽  
Robert Bristol ◽  
...  
Keyword(s):  
Field Theory ◽  
Self Assembly ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Self Consistent Field Theory

scholarly journals Cylindrical Micelles by the Self-Assembly of Crystalline-b-Coil Polyphosphazene-b-P2VP Block Copolymers. Stabilization of Gold Nanoparticles

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1772 ◽  
Author(s):  
Maria de los Angeles Cortes ◽  
Raquel de la Campa ◽  
Maria Luisa Valenzuela ◽  
Carlos Díaz ◽  
Gabino A. Carriedo ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Block Copolymers ◽  
Self Assembly ◽  
Cationic Polymerization ◽  
The Self ◽  
The Novel ◽  
Selective Solvent ◽  
The Core ◽  
Cylindrical Micelles ◽  
Main Factor

During the last number of years a variety of crystallization-driven self-assembly (CDSA) processes based on semicrystalline block copolymers have been developed to prepare a number of different nanomorphologies in solution (micelles). We herein present a convenient synthetic methodology combining: (i) The anionic polymerization of 2-vinylpyridine initiated by organolithium functionalized phosphane initiators; (ii) the cationic polymerization of iminophosphoranes initiated by –PR2Cl2; and (iii) a macromolecular nucleophilic substitution step, to prepare the novel block copolymers poly(bistrifluoroethoxy phosphazene)-b-poly(2-vinylpyridine) (PTFEP-b-P2VP), having semicrystalline PTFEP core forming blocks. The self-assembly of these materials in mixtures of THF (tetrahydrofuran) and 2-propanol (selective solvent to P2VP), lead to a variety of cylindrical micelles of different lengths depending on the amount of 2-propanol added. We demonstrated that the crystallization of the PTFEP at the core of the micelles is the main factor controlling the self-assembly processes. The presence of pyridinyl moieties at the corona of the micelles was exploited to stabilize gold nanoparticles (AuNPs).

From vesicles to micelles: microphase separation of amphiphilic dendrimer copolymers in a selective solvent

Soft Matter ◽  
2015 ◽  
Vol 11 (45) ◽  
pp. 8801-8811 ◽  
Author(s):  
Bo Lin ◽  
Lan Liu ◽  
Shijie Zhang ◽  
Junzuo Huang ◽  
Fuan He ◽  
...  
Keyword(s):  
Microphase Separation ◽  
Three Dimensional ◽  
Real Space ◽  
Excluded Volume ◽  
Selective Solvent ◽  
Excluded Volume Effects ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Self Consistent Field Theory

The microphase separation of amphiphilic dendrimer copolymers in a selective solvent with different excluded volume effects (αS) is investigated using three-dimensional real space self-consistent field theory.

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