scholarly journals Poly(styrene-co-butadiene) random copolymer thin films and nanostructures on a mica surface: morphology and contact angles of nanodroplets

Soft Matter ◽  
2017 ◽  
Vol 13 (36) ◽  
pp. 6152-6166 ◽  
Author(s):  
Jake McClements ◽  
Cosimo Buffone ◽  
Michael P. Shaver ◽  
Khellil Sefiane ◽  
Vasileios Koutsos
Keyword(s):  
Thin Films ◽  
Surface Morphology ◽  
Self Assembly ◽  
Random Copolymer ◽  
Contact Angles ◽  
The Self ◽  
Random Copolymers ◽  
Mica Surface ◽  
Molecular Weights

The self-assembly of poly(styrene-co-butadiene) random copolymers on mica surfaces was studied by varying solution concentrations and polymer molecular weights.

Effects of Continuous and Discontinuous Deposition Time in Reactive Direct Current Magnetron Sputtering of Titanium Dioxide Thin Films

2015 ◽  
Vol 1131 ◽  
pp. 251-254
Author(s):  
Montri Aiempanakit ◽  
Chantana Salawan ◽  
Kamon Aiempanakit
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Surface Morphology ◽  
Magnetron Sputtering ◽  
Direct Current ◽  
Deposition Time ◽  
Spherical Shape ◽  
Contact Angles ◽  
Water Contact ◽  
Direct Current Magnetron Sputtering

The effect of continuous and discontinuous deposition time on the properties of TiO2 thin films deposited by reactive direct current magnetron sputtering (DCMS) on glass substrates was investigated. The deposition processes were designed for a condition of continuous deposition time D1 (60 min) and three conditions of discontinuous deposition time D2 (30 min × 2 times), D3 (15 min × 4 times), and D4 (1 min × 60 times). The crystal structure, surface morphology, and hydrophilicity of TiO2 thin films were characterized by X-ray diffraction, atomic force microscope, and water contact angle method, respectively. It was found that the increasing of discontinuous deposition time (conditions from D1 to D4) shows the changing of grain size from big grain size with spherical shape to small grain size with oval shape. The crystallinity of TiO2 films decrease with increasing the discontinuous deposition time. The water contact angles also decrease as a function of increasing discontinuous deposition time. These results may be explained from the accumulation of heat on the substrate which affected the phase composition and surface morphology of TiO2 thin films.

Water dynamics and self-assembly of single-chain nanoparticles in concentrated solutions

Soft Matter ◽  
2020 ◽  
Vol 16 (42) ◽  
pp. 9738-9745
Author(s):  
Beatriz Robles-Hernández ◽  
Edurne González ◽  
José A. Pomposo ◽  
Juan Colmenero ◽  
Ángel Alegría
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Water Dynamics ◽  
Nano Particles ◽  
Random Copolymers ◽  
Core Shell ◽  
Dielectric Studies ◽  
Single Chain ◽  
Concentrated Solutions ◽  
Overlap Concentration

Dielectric studies on water dynamics in aqueous solutions of amphiphilic random copolymers confirm the self-assembly into globular like core–shell single-chain nano-particles (SCNPs) at concentrations well above the overlap concentration.

NANOSTRUCTURES FROM DESIGNER PEPTIDES

COSMOS ◽  
2008 ◽  
Vol 04 (02) ◽  
pp. 173-183
Author(s):  
BOON TEE ONG ◽  
PARAYIL KUMARAN AJIKUMAR ◽  
SURESH VALIYAVEETTIL
Keyword(s):  
Atomic Force Microscopy ◽  
Solid State ◽  
Self Assembly ◽  
Size Range ◽  
The Self ◽  
Mica Surface ◽  
Force Microscopy ◽  
Solution Structures ◽  
Atomic Force

The present article reviews the self-assembly of oligopeptides to form nanostructures, both in solution and in solid state. The solution structures of the peptides were examined using circular dichroism and dynamic light scattering. The solid state assembly was examined by adsorbing the peptides onto a mica surface and analyzing it using atomic force microscopy. The role of pH and salt concentration on the peptide self-assembly was also examined. Nanostructures within a size range of 3–10 nm were obtained under different conditions.

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.

Utilization of click chemistry to study the effect of poly(ethylene)glycol molecular weight on the self-assembly of PEGylated gambogic acid nanoparticles for the treatment of rheumatoid arthritis

2020 ◽  
Vol 8 (16) ◽  
pp. 4626-4637 ◽  
Author(s):  
Anne Nguyen ◽  
Hidenori Ando ◽  
Roland Böttger ◽  
K. K. DurgaRao Viswanadham ◽  
Elham Rouhollahi ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Molecular Weight ◽  
Ethylene Glycol ◽  
Click Chemistry ◽  
Self Assembly ◽  
The Self ◽  
Gambogic Acid ◽  
Poly Ethylene Glycol ◽  
Molecular Weights ◽  
Poly Ethylene

Click chemistry was used to study the effect of varied PEG molecular weights on the self-assembly of PEG-gambogic acid (GA) conjugates into nanoparticles.

Design and Characterization of Nanoarchitectures from Multifunctional Polyparaphenylenes

2003 ◽  
Vol 776 ◽  
Author(s):  
Renu Ravindranath ◽  
Suresh Valiyaveettil ◽  
Chinnapan Baskar ◽  
Ananda Putra ◽  
Fitri Fitrilawati ◽  
...  
Keyword(s):  
Thin Films ◽  
Conducting Polymers ◽  
Self Assembly ◽  
The Self ◽  
Morphological Properties ◽  
Synthesis And Characterization ◽  
Solution Properties ◽  
Wide Range ◽  
Modified Surfaces

AbstractConducting polymers are interesting materials due to their wide range of applications in electronics, sensing, photonics and display applications. The present paper delineates the synthesis and characterization of the three functionalized poly (p-phenylene)s (PPP) (A-C) and solution properties of the polymers. The self-assembly of the polymers were investigated on various substrates and the optical/morphological properties of thin films of these polymers were also studied. The spontaneous self assembly of the modified PPP's lead to the formation of thin films on both hydrophilic and modified surfaces.

Influence of spin casting‐solvent on the self‐assembly of silicon‐containing block copolymers thin films via high‐temperature thermal treatment

2021 ◽  
Author(s):  
Tommaso J. Giammaria ◽  
Michele Laus ◽  
Riccardo Chiarcos ◽  
Christopher K. Ober ◽  
Gabriele Seguini ◽  
...  
Keyword(s):  
Thin Films ◽  
High Temperature ◽  
Block Copolymers ◽  
Thermal Treatment ◽  
Self Assembly ◽  
The Self ◽  
Spin Casting

Nanostructured films by the self-assembly of bioactive copolymer

RSC Advances ◽  
2014 ◽  
Vol 4 (98) ◽  
pp. 55565-55570 ◽  
Author(s):  
O. V. Sinitsyna ◽  
N. K. Davydova ◽  
V. N. Sergeev ◽  
E. E. Laukhina
Keyword(s):  
Thin Films ◽  
Self Assembly ◽  
The Self ◽  
Cavity Formation ◽  
Dewetting Process ◽  
Nanostructured Films

We have developed a method via a simple dewetting process that permits the control over cavity formation on the surfaces of thin films based on a bioactive copolymer, which is able to trap DNA.

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