Jump to main content
Jump to site search

Themed collection Materials and Nano Research in Brazil

55 items
Open Access Review Article

Nanocatalysis by noble metal nanoparticles: controlled synthesis for the optimization and understanding of activities

This review discusses the importance of physical/chemical control in metallic NPs for the optimization and understanding of catalytic performances.

Graphical abstract: Nanocatalysis by noble metal nanoparticles: controlled synthesis for the optimization and understanding of activities
From the themed collection: Recent Review Articles
Review Article

Recent advances in the use of carbon nanotubes as smart biomaterials

Carbon nanotubes (CNTs) have outstanding properties that can be used to produce intelligent devices to detect pathogens, delivery drugs, and replace bone and dental parts. Therefore, CNTs have been extensively studied as medical devices.

Graphical abstract: Recent advances in the use of carbon nanotubes as smart biomaterials
From the themed collection: Materials and Nano Research in Brazil
Review Article

Nanofibrous scaffolds for biomedical applications

Tissue engineering is an emergent and very interesting research field, providing potential solutions for a myriad of challenges in healthcare.

Graphical abstract: Nanofibrous scaffolds for biomedical applications
From the themed collection: Recent Review Articles
Open Access Review Article

Technical challenges of working with extracellular vesicles

Extracellular Vesicles (EVs) are gaining interest as central players in liquid biopsies, with potential applications in diagnosis, prognosis and therapeutic guidance in most pathological conditions.

Graphical abstract: Technical challenges of working with extracellular vesicles
From the themed collection: Recent Review Articles
Open Access Communication

PU nanocomposites from bifunctional nanoparticles: impact of liquid interphase on mechanical properties

Molten organic shell of hybrid Mag@PB1000 nanoparticles, covalently attached to the matrix, yields unexpected mechanical properties.

Graphical abstract: PU nanocomposites from bifunctional nanoparticles: impact of liquid interphase on mechanical properties
From the themed collection: Materials and Nano Research in Brazil
Communication

Wearable binary cooperative polypyrrole nanofilms for chemical mapping on skin

Wearable polypyrrole nanofilm arrays have been developed to extend the natural capabilities of the skin.

Graphical abstract: Wearable binary cooperative polypyrrole nanofilms for chemical mapping on skin
From the themed collection: Materials and Nano Research in Brazil
Communication

Engineering two-dimensional gold nanostructures using graphene oxide nanosheets as a template

Controlled growth of 2D gold nanostructures with tunable optical properties on the surface of graphene oxide by a surfactant-free method.

Graphical abstract: Engineering two-dimensional gold nanostructures using graphene oxide nanosheets as a template
From the themed collection: Materials and Nano Research in Brazil
Communication

Sputtering deposition of gold nanoparticles onto graphene oxide functionalized with ionic liquids: biosensor materials for cholesterol detection

The sputtering deposition of Au nanoparticles onto ionic liquid-graphene oxide combined with cholesterol oxidase affords an efficient biosensor for cholesterol detection.

Graphical abstract: Sputtering deposition of gold nanoparticles onto graphene oxide functionalized with ionic liquids: biosensor materials for cholesterol detection
From the themed collection: Materials and Nano Research in Brazil
Open Access Paper

In situ three-dimensional imaging of strain in gold nanocrystals during catalytic oxidation

The formation of a nanotwin network in a gold nanoparticle correlates with its surface deformation and functional properties.

Graphical abstract: In situ three-dimensional imaging of strain in gold nanocrystals during catalytic oxidation
From the themed collection: Materials and Nano Research in Brazil
Paper

PEGylation as an efficient tool to enhance cytochrome c thermostability: a kinetic and thermodynamic study

PEGylation of cytochrome-c preserves activity and increases thermal stability, favoring the protein application as a biosensor.

Graphical abstract: PEGylation as an efficient tool to enhance cytochrome c thermostability: a kinetic and thermodynamic study
From the themed collection: Materials and Nano Research in Brazil
Paper

Combining GeO2 passivation strategies aiming at dielectric layers with superior properties on germanium substrates

Hf and N incorporation in GeO2 suppresses its volatilization and further oxidation of the Ge substrate.

Graphical abstract: Combining GeO2 passivation strategies aiming at dielectric layers with superior properties on germanium substrates
From the themed collection: Materials and Nano Research in Brazil
Paper

Characterization of the structural, optical, photocatalytic and in vitro and in vivo anti-inflammatory properties of Mn2+ doped Zn2GeO4 nanorods

The effect of Mn incorporation on the structural, optical, and photocatalytic properties of Zn2GeO4 (ZGO) host matrices was investigated.

Graphical abstract: Characterization of the structural, optical, photocatalytic and in vitro and in vivo anti-inflammatory properties of Mn2+ doped Zn2GeO4 nanorods
From the themed collection: Materials and Nano Research in Brazil
Paper

An FeIII dinuclear metallacycle complex as a size-selective adsorbent for nitrogenous compounds and a potentially effective ammonia storage material

Study of the FeIII dinuclear metallacycle complex as a size selective adsorbent to amines with excellent capacity to adsorb ammonia.

Graphical abstract: An FeIII dinuclear metallacycle complex as a size-selective adsorbent for nitrogenous compounds and a potentially effective ammonia storage material
From the themed collection: Materials and Nano Research in Brazil
Open Access Paper

Rutile nano–bio-interactions mediate dissimilar intracellular destiny in human skin cells

TiO2 NPs’ nano–bio-interactions mediate a distinct intracellular trafficking and destiny in human skin cells.

Graphical abstract: Rutile nano–bio-interactions mediate dissimilar intracellular destiny in human skin cells
From the themed collection: Materials and Nano Research in Brazil
Paper

Expression of chirality amplification in self-assembled achiral/chiral polyfluorene blends

Chirality amplification in pristine and annealed thin films was evidenced in chiral/achiral polymer blends, promoting highly ordered self-assembled morphologies.

Graphical abstract: Expression of chirality amplification in self-assembled achiral/chiral polyfluorene blends
From the themed collection: Materials and Nano Research in Brazil
Paper

Oily core/amphiphilic polymer shell nanocapsules change the intracellular fate of doxorubicin in breast cancer cells

The aim of this work was to develop and test the in vitro biological activity of nanocapsules loaded with a doxorubicin (DOX) free base dissolved in a core of castor oil shelled by poly(methyl vinyl ether-co-maleic anhydride) conjugated to n-octadecylamine residues.

Graphical abstract: Oily core/amphiphilic polymer shell nanocapsules change the intracellular fate of doxorubicin in breast cancer cells
Open Access Paper

Precisely tailored shell thickness and Ln3+ content to produce multicolor emission from Nd3+-sensitized Gd3+-based core/shell/shell UCNPs through bi-directional energy transfer

Precise tailoring of the shell thickness and Ln3+ content produced multicolour emissions from core/shell/shell UCNPs via a bi-directional energy transfer mechanism.

Graphical abstract: Precisely tailored shell thickness and Ln3+ content to produce multicolor emission from Nd3+-sensitized Gd3+-based core/shell/shell UCNPs through bi-directional energy transfer
From the themed collection: Materials and Nano Research in Brazil
Paper

Thulium doped LaF3 for nanothermometry operating over 1000 nm

The use and applications of infrared emitting rare-earth luminescent nanoparticles as nanothermometers have attracted a great deal of attention during the last few years.

Graphical abstract: Thulium doped LaF3 for nanothermometry operating over 1000 nm
From the themed collection: Materials and Nano Research in Brazil
Paper

Fast predictions of exciton diffusion length in organic materials

Simple computational protocol for the estimation of singlet exciton diffusion length in organic materials.

Graphical abstract: Fast predictions of exciton diffusion length in organic materials
From the themed collection: Materials and Nano Research in Brazil
Paper

In-place bonded semiconductor membranes as compliant substrates for III–V compound devices

Overcoming the critical thickness limit in pseudomorphic growth of lattice mismatched heterostructures is a fundamental challenge in heteroepitaxy.

Graphical abstract: In-place bonded semiconductor membranes as compliant substrates for III–V compound devices
From the themed collection: Materials and Nano Research in Brazil
Open Access Paper

A random laser based on electrospun polymeric composite nanofibers with dual-size distribution

Electrospun fiber-based random lasers are environment-friendly flexible systems in which waveguiding/scattering processes provided by their structure with a broad distribution of diameters are essential elements to generate a suitable lasing mechanism.

Graphical abstract: A random laser based on electrospun polymeric composite nanofibers with dual-size distribution
From the themed collection: Materials and Nano Research in Brazil
Paper

Synthesis of Sr–morin complex and its in vitro response: decrease in osteoclast differentiation while sustaining osteoblast mineralization ability

We synthesized an easy-to-prepare Sr–morin complex that can sustain osteoblast mineralization and inhibit osteoclast differentiation at a low dose.

Graphical abstract: Synthesis of Sr–morin complex and its in vitro response: decrease in osteoclast differentiation while sustaining osteoblast mineralization ability
From the themed collection: Materials and Nano Research in Brazil
Paper

Changes induced by transition metal oxides in Pt nanoparticles unveil the effects of electronic properties on oxygen reduction activity

Relevance of electronic effects in oxygen reduction on Pt nanoparticles is unveiled taking advantage of metal–support interactions.

Graphical abstract: Changes induced by transition metal oxides in Pt nanoparticles unveil the effects of electronic properties on oxygen reduction activity
From the themed collection: Materials and Nano Research in Brazil
Open Access Paper

Allosteric inhibition of α-thrombin enzymatic activity with ultrasmall gold nanoparticles

The enzymatic activity of α-thrombin was allosterically regulated by interactions with ultrasmall gold nanoparticles.

Graphical abstract: Allosteric inhibition of α-thrombin enzymatic activity with ultrasmall gold nanoparticles
From the themed collection: Materials and Nano Research in Brazil
Paper

Lipid nanoemulsion passive tumor accumulation dependence on tumor stage and anatomical location: a new mathematical model for in vivo imaging biodistribution studies

Nanoparticle delivery to tumor tissue is one of the most important applications of nanomedicine.

Graphical abstract: Lipid nanoemulsion passive tumor accumulation dependence on tumor stage and anatomical location: a new mathematical model for in vivo imaging biodistribution studies
From the themed collection: Materials and Nano Research in Brazil
Paper

Nanocatalysts for hydrogen production from borohydride hydrolysis: graphene-derived thin films with Ag- and Ni-based nanoparticles

High values of maximum rates of hydrogen production are obtained using four thin film nanocomposites that showed recycling features.

Graphical abstract: Nanocatalysts for hydrogen production from borohydride hydrolysis: graphene-derived thin films with Ag- and Ni-based nanoparticles
From the themed collection: Materials and Nano Research in Brazil
Paper

Persistent luminescence warm-light LEDs based on Ti-doped RE2O2S materials prepared by rapid and energy-saving microwave-assisted synthesis

Persistent luminescence materials based on Ti-doped rare earth oxysulfides were obtained by a rapid, one-step process for application in self-sustained warm-light LEDs.

Graphical abstract: Persistent luminescence warm-light LEDs based on Ti-doped RE2O2S materials prepared by rapid and energy-saving microwave-assisted synthesis
From the themed collection: Materials and Nano Research in Brazil
Paper

Interplay of non-uniform charge distribution on the electrochemical modification of graphene

Graphene electrodes exchange electrons with electrolyte inhomogeneously, preferentially at the edges, and covalent functionalization alters the electronic organization of graphene.

Graphical abstract: Interplay of non-uniform charge distribution on the electrochemical modification of graphene
From the themed collection: Materials and Nano Research in Brazil
Paper

Luminescent silicone materials containing Eu3+-complexes for photonic applications

We report the synthesis and investigation of a set of highly red emissive [Eu(tta)3(H2O)2]-doped silicone samples.

Graphical abstract: Luminescent silicone materials containing Eu3+-complexes for photonic applications
From the themed collection: Materials and Nano Research in Brazil
Paper

Thermoplasmonic enhancement of upconversion in small-size doped NaGd(Y)F4 nanoparticles coupled to gold nanostars

Feeling the plasmonic heat: the photothermal effect in gold nanostars enhances the emission intensity of small-size upconverting nanocrystals.

Graphical abstract: Thermoplasmonic enhancement of upconversion in small-size doped NaGd(Y)F4 nanoparticles coupled to gold nanostars
From the themed collection: Materials and Nano Research in Brazil
Paper

Artificial cerium-based proenzymes confined in lyotropic liquid crystals: synthetic strategy and on-demand activation

The artificial proenzyme concept for ultra-small cerium-based nanoparticles: the on-demand activation of inactive nanoparticles to mimic the activity of superoxide dismutase.

Graphical abstract: Artificial cerium-based proenzymes confined in lyotropic liquid crystals: synthetic strategy and on-demand activation
From the themed collection: Materials and Nano Research in Brazil
Paper

Understanding the loss of electrochemical activity of nanosized LiMn2O4 particles: a combined experimental and ab initio DFT study

Nanosized spinel LMOs with crystallites smaller than ∼15 nm present significantly decreased electrochemical activity due to the increase of the energy barriers in the Li-ion diffusion paths.

Graphical abstract: Understanding the loss of electrochemical activity of nanosized LiMn2O4 particles: a combined experimental and ab initio DFT study
From the themed collection: Materials and Nano Research in Brazil
Open Access Paper

The chemical fingerprint of hair melanosomes by infrared nano-spectroscopy

In situ characterization of the sheep hair melanosomes was performed with a spatial resolution of 25 nm using infrared nano-spectroscopy.

Graphical abstract: The chemical fingerprint of hair melanosomes by infrared nano-spectroscopy
From the themed collection: Recent Open Access Articles
Paper

Uniformly self-decorated Co3O4 nanoparticles on N, S co-doped carbon layers derived from a camphor sulfonic acid and metal–organic framework hybrid as an oxygen evolution electrocatalyst

A simple one step preparation of Co3O4 nanoparticle decorated carbon from a camphor sulfonic acid and metal–organic framework hybrid.

Graphical abstract: Uniformly self-decorated Co3O4 nanoparticles on N, S co-doped carbon layers derived from a camphor sulfonic acid and metal–organic framework hybrid as an oxygen evolution electrocatalyst
From the themed collection: Materials and Nano Research in Brazil
Paper

Carboxyl-functionalized ionic liquids: synthesis, characterization and synergy with rare-earth ions

Herein, we describe for the first time room temperature ionic liquids (RTILs) and imidazole-based cations with appended carboxylic acids as terminals, which are directly derived from the anhydrides.

Graphical abstract: Carboxyl-functionalized ionic liquids: synthesis, characterization and synergy with rare-earth ions
Paper

Marrying SPR excitation and metal–support interactions: unravelling the contribution of active surface species in plasmonic catalysis

We studied the contribution from active surface oxide species in SPR-mediated oxidation reactions.

Graphical abstract: Marrying SPR excitation and metal–support interactions: unravelling the contribution of active surface species in plasmonic catalysis
From the themed collection: Materials and Nano Research in Brazil
Paper

Covalent functionalization of graphene oxide with D-mannose: evaluating the hemolytic effect and protein corona formation

Graphene oxide mannosylation impacts on RBCs toxicity and plasma protein interactions.

Graphical abstract: Covalent functionalization of graphene oxide with d-mannose: evaluating the hemolytic effect and protein corona formation
From the themed collection: Materials and Nano Research in Brazil
Paper

Conductivity dynamics of metallic-to-insulator transition near room temperature in normal spinel CoFe2O4 nanoparticles

Designing a ferrite with dual electrical characteristics: the effect of temperature and site occupancy on the conductivity mechanisms of spinel CoFe2O4.

Graphical abstract: Conductivity dynamics of metallic-to-insulator transition near room temperature in normal spinel CoFe2O4 nanoparticles
From the themed collection: Materials and Nano Research in Brazil
Paper

Effects of accelerated degradation on metal supported thin film-based solid oxide fuel cells

Elemental distribution effects are detected throughout the metal supported TF-SOFC, indicating low energy surface elemental interdiffusion and electromigration effects.

Graphical abstract: Effects of accelerated degradation on metal supported thin film-based solid oxide fuel cells
From the themed collection: Materials and Nano Research in Brazil
Paper

A comprehensive structural and microstructural investigation of a new iron–telluride nano phase

A nanocrystalline iron-rich telluride, Fe5Te4, was prepared mechanochemically using ball milling procedures in an inert atmosphere, starting from FexTe powder mixtures with x = 1.0, 1.25 and 1.5, with x = 1.25 leading to the pure phase.

Graphical abstract: A comprehensive structural and microstructural investigation of a new iron–telluride nano phase
From the themed collection: Materials and Nano Research in Brazil
Paper

Flexible room-temperature volatile organic compound sensors based on reduced graphene oxide–WO3·0.33H2O nano-needles

Isopropanol sensors on flexible PET substrates presented high-performance at room-temperature in terms of sensitivity, selectivity and mechanical stability.

Graphical abstract: Flexible room-temperature volatile organic compound sensors based on reduced graphene oxide–WO3·0.33H2O nano-needles
From the themed collection: Materials and Nano Research in Brazil
Paper

Silk fibroin as a biotemplate for hierarchical porous silica monoliths for random laser applications

Bombyx mori silk fibroin offers unlimited opportunities for functionalization, processing, and biological integration.

Graphical abstract: Silk fibroin as a biotemplate for hierarchical porous silica monoliths for random laser applications
From the themed collection: Materials and Nano Research in Brazil
Paper

Rigorous analysis of Casimir and van der Waals forces on a silicon nano-optomechanical device actuated by optical forces

We show how van der Waals and Casimir forces affect nano-optomechanical devices, by changing their operation and design limits.

Graphical abstract: Rigorous analysis of Casimir and van der Waals forces on a silicon nano-optomechanical device actuated by optical forces
From the themed collection: Materials and Nano Research in Brazil
Paper

Carbon-supported metal nanodendrites as efficient, stable catalysts for the oxygen reduction reaction

One-pot-produced XC-72 carbon-supported metal nanodendrites with Pt or Pt–Pd surfaces proved highly catalytic toward the ORR.

Graphical abstract: Carbon-supported metal nanodendrites as efficient, stable catalysts for the oxygen reduction reaction
From the themed collection: Materials and Nano Research in Brazil
Paper

Combating pathogens with Cs2.5H0.5PW12O40 nanoparticles: a new proton-regulated antimicrobial agent

A cesium salt of phosphotungstic heteropolyacid (Cs2.5H0.5PW12O40) acts as a proton-regulated antimicrobial combating human pathogens.

Graphical abstract: Combating pathogens with Cs2.5H0.5PW12O40 nanoparticles: a new proton-regulated antimicrobial agent
From the themed collection: Materials and Nano Research in Brazil
Paper

All at once: how electrochemistry can be used to design and access multiple compositions in a single sample

A library of PtRh compositions is simultaneously obtained by electrodeposition in a diffusion-controlled cell. This approach enables to perform compositional studies in a single piece of substrate and open new perspectives of studies in heterogeneous catalysis and electrocatalysis.

Graphical abstract: All at once: how electrochemistry can be used to design and access multiple compositions in a single sample
From the themed collection: Materials and Nano Research in Brazil
Paper

Quantum capacitance as a reagentless molecular sensing element

The application of nanoscale capacitance as a transduction of molecular recognition relevant to molecular diagnostics is demonstrated, wherein the energy-related signal relates directly to the electron occupation of quantized states.

Graphical abstract: Quantum capacitance as a reagentless molecular sensing element
From the themed collection: Materials and Nano Research in Brazil
Paper

Biomolecular corona formation: nature and bactericidal impact on surface-modified silica nanoparticles

The biomolecular corona impacts the overall surface charge, the colloidal stability and the biological response of functionalized nanoparticles.

Graphical abstract: Biomolecular corona formation: nature and bactericidal impact on surface-modified silica nanoparticles
From the themed collection: Materials and Nano Research in Brazil
Paper

Upconversion nanoparticle-decorated gold nanoshells for near-infrared induced heating and thermometry

The present work involves the design of a multifunctional system based on gold nanoshells (AuNSs) decorated with lanthanide-based upconversion nanoparticles (UCNPs) intended as an optical heater and temperature probe at the nanoscale.

Graphical abstract: Upconversion nanoparticle-decorated gold nanoshells for near-infrared induced heating and thermometry
From the themed collection: Materials and Nano Research in Brazil
Paper

Diruthenium(II,III) metallodrugs of ibuprofen and naproxen encapsulated in intravenously injectable polymer–lipid nanoparticles exhibit enhanced activity against breast and prostate cancer cells

Stable nanoformulations of diruthenium(II,III)-NSAID metallodrugs encapsulated in intravenously injectable polymer-lipid NPs have been prepared and tested in cancer cells.

Graphical abstract: Diruthenium(ii,iii) metallodrugs of ibuprofen and naproxen encapsulated in intravenously injectable polymer–lipid nanoparticles exhibit enhanced activity against breast and prostate cancer cells
From the themed collection: Materials and Nano Research in Brazil
Paper

Graphite exfoliation in cellulose solutions

Shaking graphite powder dispersed in an aqueous alkaline cellulose solution produces stable dispersions of hydrophilic, thin graphite sheets with lateral dimensions reaching many micrometers.

Graphical abstract: Graphite exfoliation in cellulose solutions
From the themed collection: Materials and Nano Research in Brazil
Paper

Continuous microfiber drawing by interfacial charge complexation between anionic cellulose nanofibers and cationic chitosan

This study describes a novel process of drawing fibers generated by the electrostatic complexation of negatively charged nanocellulose fibers with positively charged chitosan macromolecules.

Graphical abstract: Continuous microfiber drawing by interfacial charge complexation between anionic cellulose nanofibers and cationic chitosan
From the themed collection: Materials and Nano Research in Brazil
Paper

Thermal decomposition and recovery properties of ZnAl–CO3 layered double hydroxide for anionic dye adsorption: insight into the aggregative nucleation and growth mechanism of the LDH memory effect.

The LDH memory effect is driven by an aggregative nucleation and growth mechanism limited by the adsorption of the anionic dye in on the external surface.

Graphical abstract: Thermal decomposition and recovery properties of ZnAl–CO3 layered double hydroxide for anionic dye adsorption: insight into the aggregative nucleation and growth mechanism of the LDH memory effect.
From the themed collection: Materials and Nano Research in Brazil
Paper

Tailoring multifunctional graphene-based thin films: from nanocatalysts to SERS substrates

Synthesis of functionalized graphene-based thin films through the interfacial route, their nanocomposites with Ag-NPs, and their multiple applications.

Graphical abstract: Tailoring multifunctional graphene-based thin films: from nanocatalysts to SERS substrates
From the themed collection: Materials and Nano Research in Brazil
Paper

Thermal sensitivity of frequency upconversion in Al4B2O9:Yb3+/Nd3+ nanoparticles

We report measurements of frequency upconversion (UC) processes in ytterbium (Yb3+) and neodymium (Nd3+) doped Al4B2O9 nanoparticles – labeled as Al4B2O9:Yb3+/Nd3+ – prepared by a polymeric precursor method.

Graphical abstract: Thermal sensitivity of frequency upconversion in Al4B2O9:Yb3+/Nd3+ nanoparticles
From the themed collection: Materials and Nano Research in Brazil
55 items

About this collection

In honour of the XVIII Brazil MRS Meeting 2019, we have put together a collection of some of the fantastic research published across the Materials and Nano journals by Brazilian authors. The articles in this collection are free to access until the 15 th  October 2019. We hope you enjoy reading them!

Spotlight

Advertisements