scholarly journals Preparation of MoS2-based polydopamine-modified core–shell nanocomposites with elevated adsorption performances

RSC Advances ◽  
2018 ◽  
Vol 8 (38) ◽  
pp. 21644-21650 ◽  
Author(s):  
Shuxin Sun ◽  
Tifeng Jiao ◽  
Ruirui Xing ◽  
Jinghong Li ◽  
Jingxin Zhou ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Composite Materials ◽  
Self Assembly ◽  
Core Shell ◽  
Assembly Process ◽  
Potential Applications ◽  
Self Assembled ◽  
Shell Composite

New core–shell MoS2–PDA nanocomposites are prepared via mussel-inspired chemistry and a simple interfacial self-assembly process, demonstrating potential applications in wastewater treatment and self-assembled core–shell composite materials.

scholarly journals Fabrication of CS/GA/RGO/Pd composite hydrogels for highly efficient catalytic reduction of organic pollutants

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15091-15097 ◽  
Author(s):  
Lei Ge ◽  
Meng Zhang ◽  
Ran Wang ◽  
Na Li ◽  
Lexin Zhang ◽  
...  
Keyword(s):  
Composite Materials ◽  
Organic Pollutants ◽  
Self Assembly ◽  
Catalytic Reduction ◽  
Assembly Process ◽  
Composite Hydrogels ◽  
Highly Efficient ◽  
Potential Applications

New functional CS/GA/RGO/Pd composite hydrogels are prepared via a self-assembly process, demonstrating potential applications in catalysis as well as composite materials.

scholarly journals ATRP-based synthesis of a pH-sensitive amphiphilic block polymer and its self-assembled micelles with hollow mesoporous silica as DOX carriers for controlled drug release

RSC Advances ◽  
2021 ◽  
Vol 11 (48) ◽  
pp. 29986-29996
Author(s):  
Xiuxiu Qi ◽  
Hongmei Yan ◽  
Yingxue Li
Keyword(s):  
Controlled Release ◽  
Drug Release ◽  
Self Assembly ◽  
Drug Loading ◽  
Controlled Drug Release ◽  
Ph Sensitive ◽  
Core Shell ◽  
Assembly Process ◽  
Block Polymer ◽  
Hollow Mesoporous Silica

A pH-sensitive core–shell nanoparticle (HMS@C18@PSDMA-b-POEGMA) was developed via a self-assembly process as the carrier of anticancer drug doxorubicin (DOX) for drug loading and controlled release.

scholarly journals A facile preparation method for new two-component supramolecular hydrogels and their performances in adsorption, catalysis, and stimuli-response

RSC Advances ◽  
2019 ◽  
Vol 9 (39) ◽  
pp. 22551-22558 ◽  
Author(s):  
Junlin Zhu ◽  
Ran Wang ◽  
Rui Geng ◽  
Xuan Zhang ◽  
Fan Wang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Preparation Method ◽  
Assembly Process ◽  
Two Component ◽  
Potential Applications ◽  
Stimuli Response ◽  
Facile Preparation ◽  
Sensor Materials

New two-component supramolecular hydrogels were prepared via a self-assembly process, demonstrating potential applications in adsorption and catalysis as well as sensor materials.

Synthesis Technology of Silica Aerogels/Polystyrene Core-Shell Composite Materials

2010 ◽  
Vol 168-170 ◽  
pp. 1833-1836
Author(s):  
Gang Qiang Geng ◽  
Jing Tao Guo ◽  
Jun Jun Zou ◽  
Gong Xun Bian
Keyword(s):  
Composite Materials ◽  
Polymerization Process ◽  
System Component ◽  
Core Shell ◽  
Ultrasound Technique ◽  
The Core ◽  
Optimum Reaction ◽  
The Impact ◽  
Shell Composite

In order to obtain super aerogels heat insulating composite materials with silane coupling agent on the in-situ surface treatment. The core-shell structure composite materials have been prepared by dispersion polymerization process of polystyrene grafted on the SiO2 particles. By TEM on these samples the impact of the system components initiator polymerization parameters and dispersion process was discussed. The results showed that the system component of the greatest impact on conversion rate is the ratio of aerogels /St ,the optimum reaction temperature is 75 °C.With organic initiator KPS as initiator after a unique ultrasound technique to obtain the core-shell composite materials structure which coating is 70%.

ChemInform Abstract: The Fabrication and Progress of Core-Shell Composite Materials.

ChemInform ◽  
2010 ◽  
Vol 41 (16) ◽  
Author(s):  
Shunsheng Cao ◽  
Juanrong Chen ◽  
Jie Hu
Keyword(s):  
Composite Materials ◽  
Core Shell ◽  
Shell Composite

scholarly journals Self-assembled peptide nanostructures for electrical, optical, and magnetic applications

2018 ◽  
Author(s):  
◽  
Soma Khanra
Keyword(s):  
Electron Microscopy ◽  
Self Assembly ◽  
Nonlinear Optical ◽  
Electronic Devices ◽  
Longitudinal Component ◽  
The Self ◽  
Assembly Process ◽  
Experimental Characterization ◽  
X Ray ◽  
Self Assembled

Bio-nanotechnology has become a widespread exciting field of research as the basic biological structure of bio-inspired materials and nanotechnology share the common length scale. Bio-nanotechnology, which is mainly based on bio-inspired nanostructured materials, has potential applications in nanomedicine, drug delivery, bio-sensors, and bio-degradable electronic devices. The nanostructures obtained from biomolecules are attractive due to their biocompatibility for molecular recognition, ease of chemical modification, and the ability to scaffold other organic and inorganic materials. Peptide nanostructures formed through the self-assembly process of the basic building block of diphenylalanine show promising applications in biodegradable electronic devices, drug delivery, catalysis agent, waveguide, and frequency converter. This research focusses on the self-assembly process in a dipeptide, L, L diphenylalanine (FF) and exploring its electronic, optical, and magnetic properties. The role of solvents in the self-assembly process of FF is explored by combining density functional theory (DFT) along with experimental characterization techniques such as electron microscopy, Raman scattering, and x-ray diffraction (XRD). One of the objectives of this work was to explore the nonlinear optical (NLO) properties of FF nanostructures via second harmonic generation (SHG). The ratio of the nonlinear optical coefficients was obtained from individual FF nanotubes as a function of the tube diameter and thermal annealing conditions. The ratio of the shear to the longitudinal component (d15/d33) of the NLO coefficient increases with the diameter of the tubes. One of the transverse components, d31, of the NLO coefficient is found to be negative, and its magnitude with respect to the longitudinal component (d33) increases with the tube diameter. Thermal treatment of individual FF tubes has a similar effect as increasing the diameter of the tubes in SHG polarimetry. The functionalization of FF micro-nanostructures (FF-MNS) with nanomaterials was studied. FF-MNS with Ag or Au nanoparticles were explored in surface-enhanced Raman scattering (SERS). Such self-assembled nanostructures provide a natural template for tethering Au and Ag nanoparticles (Nps) due to its fractal surface. The FF-MNS undergo an irreversible phase transition from hexagonal packing (hex) to an orthorhombic (ort) structure at [about] 150 [degree]C. The metal Nps form chains on hex FF-MNS as inferred from transmission electron microscopy images and a uniform non-aggregated distribution in the ort phase. The SERS spectra obtained from R6G bound to FF-MNSs with AuNps show a higher enhancement for the ort phase compared with the hex phase. The experimental results agree well with our calculated Raman spectra of model systems using DFT. Our results indicate that FF-MNS both in the hex and ort phase can be used as substrates for SERS analysis with different metal Nps, opening up a novel class of optically active bio-based substrates. The use of magnetic nanoparticles with biomolecules offers a versatile path for tuning the functionality of the composite material for several applications. The functionalization of FF-MNS with cobalt ferrite (CFO) magnetic nanoparticles was achieved. The interaction between CFO nanoparticles and FF-MNS was investigated by optical spectroscopy, x-ray photoelectron spectroscopy (XPS), and magnetization measurements. The changes in the XPS data from pristine FF-MNS and CFO:FF-MNS are indicative of a charge transfer process from CFO to FF-MNS, changing the electronic states of the Fe2+ and Co2+ ions. A comparison of the magnetic characterization from CFO nanoparticles and CFO:FF-MNS shows a higher saturation magnetization from the nanocomposite sample, which is attributed to a change in the cationic distribution in CFO upon binding with the peptide. We were further successful in demonstrating the application of FF-MNS as a bio-degradable active layer in an organic light emitting diode (OLED). FF-MNS were functionalized with two blue-emitting conducting polymers: di-octyl-substituted polyfluorene (PF8) and ethyl-hexyl polyfluorene (PF2/6), and used as an active layer in an OLED architecture. A combination of molecular dynamics and experimental characterization techniques reveals a stronger binding mechanism for PF8 compared to PF2/6 with FF-MNS. Biodegradability tests from FF-MNS:PF8 nanocomposite films show more than 80% weight loss in 2 h by enzymatic action compared to PF8 pristine films, which do not degrade. Self-assembled FF-MNS with organic semiconductors open up a new generation of biocompatible and biodegradable materials in organic electronics.

scholarly journals A simple approach to prepare self-assembled, nacre-inspired clay/polymer nanocomposites

Soft Matter ◽  
2020 ◽  
Vol 16 (23) ◽  
pp. 5497-5505 ◽  
Author(s):  
P. Xu ◽  
T. Erdem ◽  
E. Eiser
Keyword(s):  
Polymer Nanocomposites ◽  
Hierarchical Structure ◽  
Self Assembly ◽  
Simple Approach ◽  
Water Evaporation ◽  
Assembly Process ◽  
Inorganic Nanocomposites ◽  
Self Assembled ◽  
The Relationship

Inspired by the relationship between the ordered architecture of aragonite crystals and biopolymers found in natural nacre, we present a facile strategy to construct organic/inorganic nanocomposites with hierarchical structure via a water-evaporation driven self-assembly process.

Self-assembled metamaterial perfect absorbers at visible wavelengths using core–shell Au@SiO2 meta-atoms

2020 ◽  
Vol 8 (37) ◽  
pp. 12876-12885 ◽  
Author(s):  
Haibin Zhang ◽  
Yaru Li ◽  
Xiyu Long ◽  
Jun Luo ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Visible Region ◽  
Core Shell ◽  
Metamaterial Absorbers ◽  
Perfect Absorbers ◽  
Self Assembled ◽  
Visible Wavelengths

Design of metamaterial absorbers with near-perfect absorbing properties in the visible region via self-assembly of core–shell Au@SiO2 plasmonic NPs.

scholarly journals Structural lipid nanoparticles self-assembled from electrospun core–shell polymeric nanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (13) ◽  
pp. 9462-9466 ◽  
Author(s):  
Deng-Guang Yu ◽  
Kenneth White ◽  
Nicholas Chatterton ◽  
Ying Li ◽  
Lingling Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
Composite Nanofibers ◽  
Lipid Nanoparticles ◽  
Core Shell ◽  
Polymeric Nanocomposites ◽  
Structural Lipid ◽  
Self Assembled

Electrospun core–sheath composite nanofibers are exploited as templates to manipulate molecular self-assembly for generating core–shell lipid nanoparticles.

scholarly journals STM visualisation of counterions and the effect of charges on self-assembled monolayers of macrocycles

2011 ◽  
Vol 2 ◽  
pp. 674-680 ◽  
Author(s):  
Tibor Kudernac ◽  
Natalia Shabelina ◽  
Wael Mamdouh ◽  
Sigurd Höger ◽  
Steven De Feyter
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Self Assembled Monolayers ◽  
Assembly Process ◽  
Organic Monolayers ◽  
Preferential Adsorption ◽  
Scanning Tunnelling ◽  
Assembled Monolayers ◽  
Tunnelling Microscopy ◽  
Self Assembled

Despite their importance in self-assembly processes, the influence of charged counterions on the geometry of self-assembled organic monolayers and their direct localisation within the monolayers has been given little attention. Recently, various examples of self-assembled monolayers composed of charged molecules on surfaces have been reported, but no effort has been made to prove the presence of counterions within the monolayer. Here we show that visualisation and exact localisation of counterions within self-assembled monolayers can be achieved with scanning tunnelling microscopy (STM). The presence of charges on the studied shape-persistent macrocycles is shown to have a profound effect on the self-assembly process at the liquid–solid interface. Furthermore, preferential adsorption was observed for the uncharged analogue of the macrocycle on a surface.

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