scholarly journals Chemically controlled interfacial nanoparticle assembly into nanoporous gold films for electrochemical applications

2018 ◽  
Vol 6 (2) ◽  
pp. 556-564 ◽  
Author(s):  
Mikkel U.-B. Christiansen ◽  
Nedjeljko Seselj ◽  
Christian Engelbrekt ◽  
Michal Wagner ◽  
Frederick N. Stappen ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Nanoporous Gold ◽  
Nanoparticle Assembly ◽  
Gold Films ◽  
Electrochemical Applications ◽  
Air Interface

Nanoporous gold (NPG) is an effective material for electrocatalysis and can be made by self-assembly of gold nanoparticles at liquid–air interface.

Vertical segregation in the self-assembly of nanoparticles at the liquid/air interface

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 14662-14666 ◽  
Author(s):  
Yanming Liu ◽  
Yang Liu ◽  
Peng Tao ◽  
Wen Shang ◽  
Chengyi Song ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
The Self ◽  
Bimodal Size Distribution ◽  
Size Dependent ◽  
Colloidal Gold Nanoparticles ◽  
Air Interface ◽  
Vertical Segregation ◽  
One Step ◽  
The One

Vertical segregation was induced by the size-dependent charge neutralization during the one-step interfacial self-assembly of colloidal gold nanoparticles with bimodal size distribution.

scholarly journals Interfacial Crystallization and Supramolecular Self-Assembly of Spider Silk Inspired Protein at the Water-Air Interface

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4239
Author(s):  
Pezhman Mohammadi ◽  
Fabian Zemke ◽  
Wolfgang Wagermaier ◽  
Markus B. Linder
Keyword(s):  
Self Assembly ◽  
Spider Silk ◽  
Assembly Process ◽  
Protein Solution ◽  
Time Resolved ◽  
Macromolecular Assembly ◽  
X Ray Scattering ◽  
Air Interface ◽  
Fundamental Research ◽  
Β Sheet

Macromolecular assembly into complex morphologies and architectural shapes is an area of fundamental research and technological innovation. In this work, we investigate the self-assembly process of recombinantly produced protein inspired by spider silk (spidroin). To elucidate the first steps of the assembly process, we examined highly concentrated and viscous pendant droplets of this protein in air. We show how the protein self-assembles and crystallizes at the water–air interface into a relatively thick and highly elastic skin. Using time-resolved in situ synchrotron X-ray scattering measurements during the drying process, we showed that the skin evolved to contain a high β-sheet amount over time. We also found that β-sheet formation strongly depended on protein concentration and relative humidity. These had a strong influence not only on the amount, but also on the ordering of these structures during the β-sheet formation process. We also showed how the skin around pendant droplets can serve as a reservoir for attaining liquid–liquid phase separation and coacervation from the dilute protein solution. Essentially, this study shows a new assembly route which could be optimized for the synthesis of new materials from a dilute protein solution and determine the properties of the final products.

Fluorescence biosensor for Salmonella typhimurium detection in food based on nano-self-assembly of alendronic acid modified upconversion and gold nanoparticles

2021 ◽  
Author(s):  
Min Chen ◽  
Leiqing Pan ◽  
K. Tu
Keyword(s):  
Gold Nanoparticles ◽  
Salmonella Typhimurium ◽  
Gold Nanoparticle ◽  
Alendronic Acid ◽  
Self Assembly ◽  
Upconversion Nanoparticles ◽  
Fluorescent Biosensor ◽  
Fluorescence Biosensor

A simple and quick responsive fluorescent biosensor for Salmonella typhimurium detection based on the recognition of aptamer coupled with alendronic acid (ADA)@upconversion nanoparticles (UCNPs) and gold nanoparticle (AuNPs) has been...

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