Self-Assembly of Bispentadecylphenol Substituted Perylenediimide with PS-b-P4VP for Structure–Property Insight into the Core of Core–Shell Micelles

2019 ◽  
Vol 2 (2) ◽  
pp. 805-816
Author(s):  
Moumita Roy ◽  
Pattuparambil R. Rajamohanan ◽  
Sapna Ravindranathan ◽  
Asha SK
Keyword(s):  
Self Assembly ◽  
Core Shell ◽  
Structure Property ◽  
The Core ◽  
Insight Into

Insight into the core–shell structures of Cu–In–S microspheres

2013 ◽  
Vol 26 ◽  
pp. 23-30 ◽  
Author(s):  
Angela S. Wochnik ◽  
Anna Frank ◽  
Christoph Heinzl ◽  
Jonas Häusler ◽  
Julian Schneider ◽  
...  
Keyword(s):  
Shell Structures ◽  
Core Shell ◽  
The Core ◽  
Insight Into

Structure property relationships in core-shell BaTiO3–LiF ceramics

1993 ◽  
Vol 8 (4) ◽  
pp. 871-879 ◽  
Author(s):  
C.A. Randall ◽  
S.F. Wang ◽  
D. Laubscher ◽  
J.P. Dougherty ◽  
W. Huebner
Keyword(s):  
Experimental Data ◽  
Dielectric Properties ◽  
Dielectric Property ◽  
Potential Application ◽  
Microstructural Development ◽  
Core Shell ◽  
Structure Property ◽  
The Core ◽  
Structure Property Relationships ◽  
Multilayer Capacitors

A sintering, microstructural development and dielectric property study of BaTiO3–LiF ceramics was performed to assess the potential application of low-fired multilayer capacitors. Not only does LiF allow for sintering below 1000 °C, it also allows for the manipulation of dielectric properties and interfaces within BaTiO3–LiF ceramics. Using mixing laws, a model of the dielectric properties of the core-shell microstructures is presented that agrees well with the observed experimental data.

Insight into the Effect of the Core–Shell Microstructure on the Electrochemical Properties of Undoped 3D-Networked Conductive Diamond/Graphite

2019 ◽  
Vol 123 (10) ◽  
pp. 6018-6029 ◽  
Author(s):  
Zhaofeng Zhai ◽  
Nan Huang ◽  
Bing Yang ◽  
Chun Wang ◽  
Lusheng Liu ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Core Shell ◽  
Shell Microstructure ◽  
The Core ◽  
Insight Into

Insight into growth of Au–Pt bimetallic nanoparticles: anin situXAS study

2017 ◽  
Vol 24 (4) ◽  
pp. 825-835 ◽  
Author(s):  
Chandrani Nayak ◽  
D. Bhattacharyya ◽  
K. Bhattacharyya ◽  
A. K. Tripathi ◽  
R. D. Bapat ◽  
...  
Keyword(s):  
Bimetallic Nanoparticles ◽  
Energy Dispersive ◽  
Core Shell ◽  
One Pot ◽  
X Ray ◽  
The Core ◽  
One Pot Synthesis ◽  
X Ray Absorption ◽  
Insight Into

Au–Pt bimetallic nanoparticles have been synthesized through a one-pot synthesis route from their respective chloride precursors using block copolymer as a stabilizer. Growth of the nanoparticles has been studied by simultaneousin situmeasurement of X-ray absorption spectroscopy (XAS) and UV–Vis spectroscopy at the energy-dispersive EXAFS beamline (BL-08) at Indus-2 SRS at RRCAT, Indore, India.In situXAS spectra, comprising both X-ray near-edge structure (XANES) and extended X-ray absorption fine-structure (EXAFS) parts, have been measured simultaneously at the Au and PtL3-edges. While the XANES spectra of the precursors provide real-time information on the reduction process, the EXAFS spectra reveal the structure of the clusters formed in the intermediate stages of growth. This insight into the formation process throws light on how the difference in the reduction potential of the two precursors could be used to obtain the core–shell-type configuration of a bimetallic alloy in a one-pot synthesis method. The core–shell-type structure of the nanoparticles has also been confirmed byex situenergy-dispersive spectroscopy line-scan and X-ray photoelectron spectroscopy measurements within situion etching on fully formed nanoparticles.

scholarly journals Gain-Assisted Optical Pulling Force on Plasmonic Graded Nano-Shell with Equivalent Medium Theory

Physics ◽  
2021 ◽  
Vol 3 (4) ◽  
pp. 955-968
Author(s):  
Yamin Wu ◽  
Yang Huang ◽  
Pujuan Ma ◽  
Lei Gao
Keyword(s):  
Optical Force ◽  
Core Shell ◽  
Deep Insight ◽  
Medium Theory ◽  
Additional Degree ◽  
The Core ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Pulling Force ◽  
Insight Into

The tunable optical pulling force on a graded plasmonic core-shell nanoparticle consisting of a gain dielectric core and graded plasmonic shell is investigated in the illumination of a plane wave. In this paper, the electrostatic polarizability and the equivalent permittivity of the core-shell sphere are derived and the plasmonic enhanced optical pulling force in the antibonding and bonding dipole modes of the graded nanoparticle are demonstrated. Additionally, the resonant pulling force occurring on the dipole mode is shown to be dependent on the aspect ratio of the core-shell particle, which is illustrated by the obtained equivalent permittivity. This shows that the gradation of the graded shell will influence the plasmonic feature of the particle, thus further shifting the resonant optical force peaks and strengthening the pulling force. The obtained results provide an additional degree of freedom to manipulate nanoparticles and give a deep insight into light–matter interaction.

scholarly journals Structures of collagen IV globular domains: insight into associated pathologies, folding and network assembly

IUCrJ ◽  
2018 ◽  
Vol 5 (6) ◽  
pp. 765-779 ◽  
Author(s):  
Patricia Casino ◽  
Roberto Gozalbo-Rovira ◽  
Jesús Rodríguez-Díaz ◽  
Sreedatta Banerjee ◽  
Ariel Boutaud ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Self Assembly ◽  
Molecular Mechanisms ◽  
Collagen Iv ◽  
Basement Membranes ◽  
Missense Mutations ◽  
The Core ◽  
Extracellular Structures ◽  
Insight Into

Basement membranes are extracellular structures of epithelia and endothelia that have collagen IV scaffolds of triple α-chain helical protomers that associate end-to-end, forming networks. The molecular mechanisms by which the noncollagenous C-terminal domains of α-chains direct the selection and assembly of the α1α2α1 and α3α4α5 hetero-oligomers found in vivo remain obscure. Autoantibodies against the noncollagenous domains of the α3α4α5 hexamer or mutations therein cause Goodpasture's or Alport's syndromes, respectively. To gain further insight into oligomer-assembly mechanisms as well as into Goodpasture's and Alport's syndromes, crystal structures of noncollagenous domains produced by recombinant methods were determined. The spontaneous formation of canonical homohexamers (dimers of trimers) of these domains of the α1, α3 and α5 chains was shown and the components of the Goodpasture's disease epitopes were viewed. Crystal structures of the α2 and α4 noncollagenous domains generated by recombinant methods were also determined. These domains spontaneously form homo-oligomers that deviate from the canonical architectures since they have a higher number of subunits (dimers of tetramers and of hexamers, respectively). Six flexible structural motifs largely explain the architectural variations. These findings provide insight into noncollagenous domain folding, while supporting the in vivo operation of extrinsic mechanisms for restricting the self-assembly of noncollagenous domains. Intriguingly, Alport's syndrome missense mutations concentrate within the core that nucleates the folding of the noncollagenous domain, suggesting that this syndrome, when owing to missense changes, is a folding disorder that is potentially amenable to pharmacochaperone therapy.

scholarly journals Formation of Giant Polymer Vesicles by Simple Double Emulsification using Block Copolymers as the Sole Surfactant

Soft Matter ◽  
2021 ◽  
Author(s):  
Mazarine Houbrechts ◽  
Lucas Caire da Silva ◽  
Anitha Ethirajan ◽  
Katharina Landfester
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Shell Structure ◽  
The Self ◽  
Amphiphilic Block Copolymers ◽  
Core Shell ◽  
The Core ◽  
Polymer Vesicles ◽  
Core Shell Structure ◽  
Double Emulsification

Polymer vesicles that mimic the function of cell membranes can be obtained through the self-assembly of amphiphilic block copolymers. The cell-like characteristics of polymer vesicles, such as the core-shell structure,...

scholarly journals Characterizing the Core-Shell Architecture of Block Copolymer Nanoparticles with Electron Microscopy: A Multi-Technique Approach

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1656
Author(s):  
Vitalii Tkachenko ◽  
Loïc Vidal ◽  
Ludovic Josien ◽  
Marc Schmutz ◽  
Julien Poly ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Block Copolymer ◽  
Self Assembly ◽  
Morphological Characterization ◽  
Spherical Particles ◽  
Core Shell ◽  
Positive Staining ◽  
Particle Volume ◽  
Core Diameter ◽  
The Core

Electron microscopy has proved to be a major tool to study the structure of self-assembled amphiphilic block copolymer particles. These specimens, like supramolecular biological structures, are problematic for electron microscopy because of their poor capacity to scatter electrons and their susceptibility to radiation damage and dehydration. Sub-50 nm core-shell spherical particles made up of poly(hydroxyethyl acrylate)–b–poly(styrene) are prepared via polymerization-induced self-assembly (PISA). For their morphological characterization, we discuss the advantages, limitations, and artefacts of TEM with or without staining, cryo-TEM, and SEM. A number of technical points are addressed such as precisely shaping of particle boundaries, resolving the particle shell, differentiating particle core and shell, and the effect of sample drying and staining. TEM without staining and cryo-TEM largely evaluate the core diameter. Negative staining TEM is more efficient than positive staining TEM to preserve native structure and to visualize the entire particle volume. However, no technique allows for a satisfactory imaging of both core and shell regions. The presence of long protruding chains is manifested by patched structure in cryo-TEM and a significant edge effect in SEM. This manuscript provides a basis for polymer chemists to develop their own specimen preparations and to tackle the interpretation of challenging systems.

scholarly journals Controlled Release from Core-Shell Nanoporous Silica Particles for Corrosion Inhibition of Aluminum Alloys

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Xingmao Jiang ◽  
Ying-Bing Jiang ◽  
Nanguo Liu ◽  
Huifang Xu ◽  
Shailendra Rathod ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Self Assembly ◽  
Effective Diffusion ◽  
Silica Particles ◽  
Single Step ◽  
Nanoporous Silica ◽  
Core Shell ◽  
Release Process ◽  
The Core ◽  
Release Data

Cerium (Ce) corrosion inhibitors were encapsulated into hexagonally ordered nanoporous silica particles via single-step aerosol-assisted self-assembly. The core/shell structured particles are effective for corrosion inhibition of aluminum alloy AA2024-T3. Numerical simulation proved that the core-shell nanostructure delays the release process. The effective diffusion coefficient elucidated from release data for monodisperse particles in water was1.0×10−14 m2s for Ce3+compared to2.5×10−13 m2s for NaCl. The pore size, pore surface chemistry, and the inhibitor solubility are crucial factors for the application. Microporous hydrophobic particles encapsulating a less soluble corrosion inhibitor are desirable for long-term corrosion inhibition.

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