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Fabrication of stimulus-responsive diatom biosilica microcapsules for antibiotic drug delivery

Roshan B. Vasani、Dušan Lošić、Alex Cavallaro 等 4 位作者2015-01-01Journal of Materials Chemistry B

In this report, we employed surface-initiated atom transfer radical polymerisation to graft thermo-responsive copolymers of oligo(ethylene glycol) methacrylates from the surface of diatom biosilica microcapsules. We demonstrate the application of the resulting composites for thermo-responsive drug delivery.

Calcium Carbonate Crystallization and InhibitionMarine Sponges and Natural ProductsDiatoms and Algae Research

Electromagnetic interference shielding in 1–18 GHz frequency and electrical property correlations in poly(vinylidene fluoride)–multi-walled carbon nanotube composites

G. Sudheer Kumar、D. Vishnupriya、Anupama Joshi 等 5 位作者2015-01-01Physical Chemistry Chemical Physics

Electromagnetic interference (EMI) shielding properties in the 1-18 GHz frequency range for multi-walled carbon nanotube (MWNT)-poly(vinylidene fluoride) (PVDF) composites are reported. A simple and gentle acid-treatment of MWNT showed a percolation threshold (PT) of 0.15 wt% in the PVDF matrix as against 0.35 wt% for…

Electromagnetic wave absorption materialsAdvanced Antenna and Metasurface TechnologiesDielectric materials and actuators

Considerable Variation of Antibacterial Activity of Cu Nanoparticles Suspensions Depending on the Storage Time, Dispersive Medium, and Particle Sizes

Olga V. Zakharova、Anna Godymchuk、Alexander Gusev 等 6 位作者2015-01-01BioMed Research International

Suspensions of Cu nanoparticles are promising for creating the new class of alternative antimicrobial products. In this study we examined copper nanoparticles of various sizes obtained by the method of wire electric explosion: nanopowder average size 50 nm (Cu 50) and 100 nm (Cu 100). The paper presents the complex st…

Nanoparticles: synthesis and applicationsLaser-Ablation Synthesis of NanoparticlesNanotechnology research and applications

Nitrogen-doped ordered mesoporous carbon single crystals: aqueous organic–organic self-assembly and superior supercapacitor performance

Guozhu Shen、Xiaoran Sun、Hongwei Zhang 等 8 位作者2015-01-01Journal of Materials Chemistry A

Nitrogen-doped ordered mesoporous carbon single crystals have been synthesized. The resultant material shows high specific capacitance, excellent rate performance, and outstanding cycling stability in EDLCs.

Electrocatalysts for Energy ConversionSupercapacitor Materials and FabricationConducting polymers and applications

Performance of Al-Air Batteries Based on Al–Ga, Al–In and Al–Sn Alloy Electrodes

Zegao Sun、Huimin Lu、Liang Fan 等 6 位作者2015-01-01Journal of The Electrochemical Society

In this paper, the performance of Al-air batteries based on pure Al, Al–0.1 wt%Ga, Al–0.1 wt%In and Al–0.1 wt%Sn anodes in 1 M KOH solutions was investigated by galvanostatic discharge test. The electrochemical characteristics of the anodes were investigated by means of hydrogen collection, tafel polarization, electro…

Corrosion Behavior and InhibitionMagnesium Alloys: Properties and ApplicationsHydrogen Storage and Materials

An Overview on the Improvement of Mechanical Properties of Ceramics Nanocomposites

José Dinis Silvestre、Nuno Silvestre、Jorge de Brito2015-01-01Journal of Nanomaterials

Due to their prominent properties (mechanical, stiffness, strength, thermal stability), ceramic composite materials (CMC) have been widely applied in automotive, industrial and aerospace engineering, as well as in biomedical and electronic devices. Because monolithic ceramics exhibit brittle behaviour and low electric…

Advanced ceramic materials synthesisAdvanced materials and compositesTribology and Wear Analysis

Out of sight but not out of mind: the role of counter electrodes in polymer-based solid-state electrochromic devices

D. Eric Shen、Anna M. Österholm、John R. Reynolds2015-01-01Journal of Materials Chemistry C

Through the appropriate choice of counter electrode material, effective electrochromic polymer devices with low operating voltages, no break-in time, high optical contrast, and short switching times are produced.

Conducting polymers and applicationsTransition Metal Oxide NanomaterialsAnalytical Chemistry and Sensors

Low temperature synthesized carbon nanotube superstructures with superior CO 2 and hydrogen storage capacity

Beatrice Adeniran、Robert Mokaya2015-01-01Journal of Materials Chemistry A

Carbon nanotube (CNT) superstructures prepared at 180 °C are activated to highly porous (1479–3802 m 2 g −1 ; 0.83–2.98 cm 3 g −1 ) carbons with excellent CO 2 uptake; up to 4.8 and 8.4 mmol g −1 at 1 bar and 25 or 0 °C, respectively, and exceptional hydrogen storage; up to 7.5 and 14.9 wt% at −196 °C and 20 or 150 ba…

Supercapacitor Materials and FabricationHydrogen Storage and MaterialsCovalent Organic Framework Applications

Effect of the chloride ion as a hole scavenger on the photocatalytic conversion of CO 2 in an aqueous solution over Ni–Al layered double hydroxides

Shoji Iguchi、Kentaro Teramura、Saburo Hosokawa 等 4 位作者2015-01-01Physical Chemistry Chemical Physics

The photocatalytic conversion of CO2 into useful chemical compounds in water without using organic sacrificial reagents is a promising method to overcome environmental and energy problems. Various synthesized layered double hydroxides (LDHs) are capable of reducing CO2 to CO in an aqueous solution under UV light irrad…

Advanced Photocatalysis TechniquesCatalytic Processes in Materials ScienceLayered Double Hydroxides Synthesis and Applications

Stimuli responsive drug delivery application of polymer and silica in biomedicine

Arif Gulzar、Shili Gai、Piaoping Yang 等 6 位作者2015-01-01Journal of Materials Chemistry B

In the last decade, using polymer and mesoporous silica materials as efficient drug delivery carriers has attracted great attention. Although the development and application of them involves some inevitable barriers, such as chronic toxicities, long-term stability, understanding of the biological fate and physiochemic…

Nanoparticle-Based Drug DeliveryHydrogels: synthesis, properties, applicationsGraphene and Nanomaterials Applications

Glitter in a 2D monolayer

Li-Ming Yang、Matthew Dornfeld、Thomas Frauenheim 等 4 位作者2015-01-01Physical Chemistry Chemical Physics

We predict a highly stable and robust atomically thin gold monolayer with a hexagonal close packed lattice stabilized by metallic bonding with contributions from strong relativistic effects and aurophilic interactions. We have shown that the framework of the Au monolayer can survive 10 ps MD annealing simulations up t…

Graphene research and applicationsMolecular Junctions and NanostructuresElectronic and Structural Properties of Oxides

A ratiometric fluorescent system for carboxylesterase detection with AIE dots as FRET donors

Yinglong Wu、Shuailing Huang、Fang Zeng 等 8 位作者2015-01-01Chemical Communications

A ratiometric fluorescent system for CaE detection with AIE dots as the FRET donors was designed. Upon enzymatic reaction, electrostatic interaction between the cationic TPE-N(+) dots and the enzymatic reaction product - the negatively charged fluorescein molecules - allows the FRET process to proceed, thus affording…

Electrochemical sensors and biosensorsMolecular Sensors and Ion DetectionLuminescence and Fluorescent Materials

Antibacterial Activity and Cytotoxicity of Gold (I) and (III) Ions and Gold Nanoparticles

Shareena Dasari TP、Ying Zhang2015-01-01Biochemistry & Pharmacology Open Access

values for Au(I) and Au(III) in different buffers are HEPES (0.48 and 1.55 µM) > Trizma (0.41 and 0.57 µM) > PBS (0.14 and 0.06 µM). Bacterial growth inhibition by AuNPs is gradually reduced by centrifugation-resuspension to remove residual Au(III) ion present in the crude synthetic AuNPs. After 4 centrifugations-resu…

Nanoparticles: synthesis and applicationsGold and Silver Nanoparticles Synthesis and ApplicationsPharmaceutical and Antibiotic Environmental Impacts

Highly flexible transparent self-healing composite based on electrospun core–shell nanofibers produced by coaxial electrospinning for anti-corrosion and electrical insulation

Seongpil An、Minho Liou、Kyo Yong Song 等 8 位作者2015-01-01Nanoscale

Coaxial electrospinning was used to fabricate two types of core-shell fibers: the first type with liquid resin monomer in the core and polyacrylonitrile in the shell, and the second type with liquid curing agent in the core and polyacrylonitrile in the shell. These two types of core-shell fibers were mutually entangle…

Advanced Sensor and Energy Harvesting MaterialsElectrospun Nanofibers in Biomedical ApplicationsPolymer composites and self-healing