Layer-by-layer assembly: Layer-By-Layer Technique for Producing Porous Nanostructured 3D Constructs Using Moldable Freeform Assembly of Spherical Templates (Small 23/2010)

Small ◽  
2010 ◽  
Vol 6 (23) ◽  
pp. 2643-2643 ◽  
Author(s):  
Praveen Sher ◽  
Catarina A. Custódio ◽  
João. F. Mano
Keyword(s):  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Layer Technique ◽  
Layer By Layer Technique ◽  
Layer Assembly ◽  
Assembly Layer

Layer-by-layer assembly of exfoliated layered double hydroxide nanosheets for enhanced electrochemical oxidation of water

2016 ◽  
Vol 4 (29) ◽  
pp. 11516-11523 ◽  
Author(s):  
Cong Zhang ◽  
Jingwen Zhao ◽  
Lei Zhou ◽  
Zhenhua Li ◽  
Mingfei Shao ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Layered Double Hydroxide ◽  
Ultrathin Films ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Layer Technique ◽  
Double Hydroxide ◽  
Layer By Layer Technique ◽  
Layer Assembly

Well-ordered (CoNi-LDH/Fe-PP)nultrathin films were obtained through a layer-by-layer technique, which exhibit largely enhanced OER performance.

scholarly journals Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates

2015 ◽  
Vol 6 ◽  
pp. 2310-2318 ◽  
Author(s):  
Joseba Irigoyen ◽  
Nikolaos Politakos ◽  
Eleftheria Diamanti ◽  
Elena Rojas ◽  
Marco Marradi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Layer By Layer ◽  
Force Microscopy ◽  
Atomic Force ◽  
Transmission Electron ◽  
Layer Technique ◽  
Polyallylamine Hydrochloride ◽  
Layer By Layer Technique ◽  
Layer Assembly ◽  
Shape And Size

A novel and facile method was developed to produce hybrid graphene oxide (GO)–polyelectrolyte (PE) capsules using erythrocyte cells as templates. The capsules are easily produced through the layer-by-layer technique using alternating polyelectrolyte layers and GO sheets. The amount of GO and therefore its coverage in the resulting capsules can be tuned by adjusting the concentration of the GO dispersion during the assembly. The capsules retain the approximate shape and size of the erythrocyte template after the latter is totally removed by oxidation with NaOCl in water. The PE/GO capsules maintain their integrity and can be placed or located on other surfaces such as in a device. When the capsules are dried in air, they collapse to form a film that is approximately twice the thickness of the capsule membrane. AFM images in the present study suggest a film thickness of approx. 30 nm for the capsules in the collapsed state implying a thickness of approx. 15 nm for the layers in the collapsed capsule membrane. The polyelectrolytes used in the present study were polyallylamine hydrochloride (PAH) and polystyrenesulfonate sodium salt (PSS). Capsules where characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), dynamic light scattering (DLS) and Raman microscopy, the constituent layers by zeta potential and GO by TEM, XRD, and Raman and FTIR spectroscopies.

Complex formation of modified chitosan and carboxymethyl cellulose and its effect on paper properties

TAPPI Journal ◽  
2009 ◽  
Vol 8 (6) ◽  
pp. 29-35 ◽  
Author(s):  
PEDRAM FATEHI ◽  
LIYING QIAN ◽  
RATTANA KITITERAKUN ◽  
THIRASAK RIRKSOMBOON ◽  
HUINING XIAO
Keyword(s):  
Carboxymethyl Cellulose ◽  
Polymer System ◽  
Layer By Layer ◽  
Paper Strength ◽  
Anionic Polymer ◽  
Paper Properties ◽  
Modified Chitosan ◽  
Layer By Layer Assembly ◽  
Polyelectrolyte Titration ◽  
Layer Assembly

The application of an oppositely charged dual polymer system is a promising approach to enhance paper strength. In this work, modified chitosan (MCN), a cationic polymer, and carboxymethyl cellulose (CMC), an anionic polymer, were used sequentially to improve paper strength. The adsorption of MCN on cellulose fibers was analyzed via polyelectrolyte titration. The formation of MCN/CMC complex in water and the deposition of this complex on silicon wafers were investigated by means of atomic force microscope and quasi-elastic light scattering techniques. The results showed that paper strength was enhanced slightly with a layer-by-layer assembly of the polymers. However, if the washing stage, which was required for layer-by-layer assembly, was eliminated, the MCN/CMC complex was deposited on fibers more efficiently, and the paper strength was improved more significantly. The significant improvement was attributed to the extra development of fiber bonding, confirmed further by scanning electron microscope observation of the bonding area of fibers treated with or without washing. However, the brightness of papers was somewhat decreased by the deposition of the complex on fibers. Higher paper strength also was achieved using rapid drying rather than air drying.

Stabilization of starch-based microgel-lysozyme complexes using a layer-by-layer assembly technique

2017 ◽  
Vol 214 ◽  
pp. 213-217 ◽  
Author(s):  
Bao Zhang ◽  
Yi Pan ◽  
Hanqing Chen ◽  
Tengfei Liu ◽  
Han Tao ◽  
...  
Keyword(s):  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Assembly Technique ◽  
Layer Assembly

Layer-by-layer assembly of hemoglobin and gold nanoparticles for enhancing the ability of oxygen carrying

2016 ◽  
Vol 363 ◽  
pp. 566-571 ◽  
Author(s):  
Lijun Sun ◽  
Xiaojun Liu ◽  
Qiaoling Sun ◽  
Meng Cai ◽  
Jiajing Zhou ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Layer Assembly
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