Rapid-flux-solvent-atmosphere method for tailoring the morphology of titania substrates over a large area via direct self-assembly of block copolymers

RSC Advances ◽  
2014 ◽  
Vol 4 (32) ◽  
pp. 16721-16725 ◽  
Author(s):  
Gianpaolo Chieffi ◽  
Rocco Di Girolamo ◽  
Antonio Aronne ◽  
Pasquale Pernice ◽  
Esther Fanelli ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Hybrid Composite ◽  
Fast Method ◽  
Large Area ◽  
Composite Nanostructures

A fast method for the preparation of block-copolymer-based hybrid composite nanostructures and titania substrates well oriented over a large area, is illustrated.

Electric field directed self-assembly of block copolymers for rapid formation of large-area complex nanopatterns

2017 ◽  
Vol 2 (5) ◽  
pp. 560-566 ◽  
Author(s):  
Hyun Uk Jeon ◽  
Hyeong Min Jin ◽  
Ju Young Kim ◽  
Seung Keun Cha ◽  
Jeong Ho Mun ◽  
...  
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Electric Field ◽  
Self Assembly ◽  
Large Area ◽  
Rapid Formation

We investigate the unusually rapid directed self-assembly of block copolymer (BCP) thin films by imposing an in-plane electric field.

Solvent Effects on the Synthesis of Polymeric Nanoparticles via Block Copolymer Self-Assembly Using Microporous Membranes

2020 ◽  
Vol 1000 ◽  
pp. 324-330
Author(s):  
Sri Agustina ◽  
Masayoshi Tokuda ◽  
Hideto Minami ◽  
Cyrille Boyer ◽  
Per B. Zetterlund
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Polymeric Nanoparticles ◽  
Raft Polymerization ◽  
Membrane Emulsification ◽  
Membrane Pore ◽  
Novel Technique ◽  
Wide Range ◽  
Membrane Pore Size

The self-assembly of block copolymers has attracted attention for many decades because it can yield polymeric nanoobjects with a wide range of morphologies. Membrane emulsification is a fairly novel technique for preparation of various types of emulsions, which relies on the dispersed phase passing through a membrane in order to effect droplet formation. In this study, we have prepared polymeric nanoparticles of different morphologies using self-assembly of asymmetric block copolymers in connection with membrane emulsification. Shirasu Porous Glass (SPG) membranes has been employed as the membrane emulsification equipment, and poly (oligoethylene glycol acrylate)-block-poly (styrene) (POEGA-b-PSt) copolymers prepared via RAFT polymerization. It has been found that a number of different morphologies can be achieved using this novel technique, including spheres, rods, and vesicles. Interestingly, the results have shown that the morphology can be controlled not only by adjusting experimental parameters specific to the membrane emulsification step such as membrane pore size and pressure, but also by changing the nature of organic solvent. As such, this method provides a novel route to these interesting nanoobjects, with interesting prospects in terms of exercising morphology control without altering the nature of the block copolymer itself.

Self-assembly and disassembly of a redox-responsive ferrocene-containing amphiphilic block copolymer for controlled release

2015 ◽  
Vol 6 (10) ◽  
pp. 1817-1829 ◽  
Author(s):  
Lichao Liu ◽  
Leilei Rui ◽  
Yun Gao ◽  
Weian Zhang
Keyword(s):  
Controlled Release ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Rhodamine B ◽  
Self Assembly ◽  
Amphiphilic Block Copolymer ◽  
Model Molecule ◽  
Redox Responsive

The synthesis and self-assembly of ferrocene-containing block copolymers PEG-b-PMAEFc, and the encapsulation and redox-responsive release of a model molecule (rhodamine B) upon external redox stimuli (H2O2).

scholarly journals A facile strategy for manipulating micellar size and morphology through intramolecular cross-linking of amphiphilic block copolymers

2017 ◽  
Vol 8 (23) ◽  
pp. 3647-3656 ◽  
Author(s):  
Ryoto Tanaka ◽  
Kodai Watanabe ◽  
Takuya Yamamoto ◽  
Kenji Tajima ◽  
Takuya Isono ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Amphiphilic Block Copolymers ◽  
Amphiphilic Block Copolymer ◽  
Cross Linking ◽  
Micellar Size ◽  
System P ◽  
Assembly Behavior ◽  
Size And Morphology

The effect of intramolecular cross-linking on aqueous self-assembly behavior was systematically investigated based on an amphiphilic block copolymer system.

Polymeric Janus nanoparticles templated by block copolymer thin films

RSC Advances ◽  
2015 ◽  
Vol 5 (55) ◽  
pp. 44218-44221 ◽  
Author(s):  
Elio Poggi ◽  
Jean-Pierre Bourgeois ◽  
Bruno Ernould ◽  
Jean-François Gohy
Keyword(s):  
Thin Films ◽  
Surface Modification ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
The Self ◽  
Polymer Grafting ◽  
Novel Approach ◽  
Janus Nanoparticles

We report a novel approach to synthesize well-defined polymeric Janus nanoparticles by combining the self-assembly of block copolymers in thin films and surface modification by polymer grafting.

Block Copolymers: Thermodynamics, Dynamics, and Small-Angle Scattering

2015 ◽  
Author(s):  
Lee M. Trask ◽  
Nacu Hernandez ◽  
Eric W. Cochran
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Small Angle ◽  
Self Assembly ◽  
Microphase Separation ◽  
Small Angle Scattering ◽  
Angle Scattering ◽  
Copolymer Melts ◽  
Shear Processing ◽  
Kinetics Of

This article explores the dynamics, thermodynamics, and small-angle scattering of block copolymers. The goal is to determine what drives the applications of block copolymers, i.e. how block copolymers behave and how they are characterized. The article begins with a summary of the experimental data and various theories that comprise our understanding of block copolymer thermodynamics, with particular emphasis on phase behavior and especially the theory of microphase separation. It then considers topics related to block copolymer dynamics, including diffusion, viscoelasticity and rheology, shear-processing, and the kinetics of self-assembly. It also discusses small-angle scattering techniques as applied to block copolymer characterization, including scattering from ordered block copolymer melts.

scholarly journals Impact of backbone composition on homopolymer dynamics and brush block copolymer self-assembly

2020 ◽  
Vol 11 (45) ◽  
pp. 7147-7158
Author(s):  
Bret M. Boyle ◽  
Joseph L. Collins ◽  
Tara E. Mensch ◽  
Matthew D. Ryan ◽  
Brian S. Newell ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Photonic Crystals ◽  
Self Assembly ◽  
Side Chain ◽  
Backbone Structure

Four series of brush block copolymers with near identical side chain compositions but varying backbone structures were synthesized to investigate the effect of backbone structure on the thermal self-assembly to photonic crystals.

Hierarchical multi-level block copolymer patterns by multiple self-assembly

Nanoscale ◽  
2019 ◽  
Vol 11 (17) ◽  
pp. 8433-8441 ◽  
Author(s):  
Hyunsung Jung ◽  
Won Ho Shin ◽  
Tae Wan Park ◽  
Young Joong Choi ◽  
Young Joon Yoon ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Pattern Generation ◽  
Unusual Pattern ◽  
3D Nanostructures ◽  
Multi Level ◽  
2D And 3D Nanostructures ◽  
2D And 3D

Unusual pattern generation of various 2D and 3D nanostructures can be achieved by the multiple self-assembly of block copolymers (BCPs) such as big-dot, double-dot, line-on-dot, pondering, dot-in-honeycomb, dot-in-pondering, and line-on-pondering patterns.

Star amphiphilic block copolymers: synthesis via polymerization-induced self-assembly and crosslinking within nanoparticles, and solution and interfacial properties

2020 ◽  
Vol 11 (14) ◽  
pp. 2532-2541 ◽  
Author(s):  
Sijia Qian ◽  
Rui Liu ◽  
Guang Han ◽  
Keyu Shi ◽  
Wangqing Zhang
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Interfacial Properties ◽  
Amphiphilic Block Copolymers ◽  
Amphiphilic Block Copolymer ◽  
Linear Block

The star amphiphilic block copolymer of star s-PNIPAM-b-PS is synthesized and it shows characteristics significantly different from those of the linear block copolymer counterpart.

scholarly journals Polymer-based multiferroic nanocomposites via directed block copolymer self-assembly

2019 ◽  
Vol 7 (4) ◽  
pp. 968-976 ◽  
Author(s):  
Ivan Terzić ◽  
Niels L. Meereboer ◽  
Harm Hendrik Mellema ◽  
Katja Loos
Keyword(s):  
Magnetic Nanoparticles ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Self Assembled

Directed dispersion of magnetic nanoparticles inside self-assembled ferroelectric block copolymers holds promises for future improved multiferroics.

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