Materials Literature
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We examine the effects of interfacially active particles in blends of immiscible homopolymers with a droplet/matrix morphology. The effect of particles on drop size is not monotonic: at low volume fractions (∼0.1%), particles greatly increase the size of the dispersed phase by promoting flow-induced coalescence regard…
A simple and effective dispersion method based on solvent exchange is implemented to investigate the electro-responsive characteristics of graphene oxide sheets.
Thermally-induced shape memory multiblock poly(ether-ester)s (PBSEGs) comprising crystallisable poly(butylene succinate) (PBS) hard segments and poly(ethylene glycol) (PEG) soft segments, were synthesized by polycondensation from succinic acid, 1,4-butanediol and PEG diol. The copolymers were characterized by 1H-NMR,…
A recent literature review of the field shows that tissue-engineered skin has been in clinical use for the last several decades and that, over this time the technology has advanced rapidly. Despite this progress no synthetic skin yet produced has completely replicated normal, healthy skin. Therefore, researchers must…
We investigate plasmon resonances in gold nanoparticles to enhance the quantum yield of upconverting materials. For this purpose, we use a rate equation model that describes the upconversion of trivalent erbium based upconverters. Changes of the optical field acting on the upconverter and the changes to the transition…
In this study, the inhibition effect of 3-amino-1,2,4-triazole (ATA) on copper corrosion in 2M HNO3 solution was studied. Electrochemical techniques such as potentiodynamic polarization curves, weight loss (WL) and electrochemical impedance spectroscopy (EIS) were used. Results showed that ATA has good inhibition effi…
Uniform, ultra-small-sized and well-water-dispersible LaF(3) nanoparticles doped with trivalent rare earth (RE) ions (Eu(3+) or Tb(3+)) have been synthesized by a simple, low temperature synthesis route. The nanoparticles, with sizes of about 3.2 nm (for those doped with Eu(3+)) and 3.0 nm (for those doped with Tb(3+)…
Surface modification and functionalization of bioconjugated quantum dots (QDs) has drawn great attention for the past few years due to their wide applications in biomedical research. In this contribution, we demonstrate the use of PEGylated phospholipid micelles to encapsulate near infrared emitting ultra-small lead s…
A novel Y3(1−x)Er3xGa5O12 nanocrystalline garnet has been synthesized by a sol–gel technique and a complete structural, morphological, vibrational, and optical characterization has been carried out in order to correlate the local structure of the Er3+ ions with their optical properties. The synthesized nanocrystals ar…
A simple and low‐cost method for the synthesis of calcium carbonate nanoparticles from cockle shells was described. Polymorphically, the synthesized nanoparticles were aragonites which are biocompatible and thus frequently used in the repair of fractured bone and development of advanced drug delivery systems, tissue s…
A continuum theory is used to study ordering in liquid crystal nanodroplets. The free energy functional that describes the system is minimized using an Euler–Lagrange approach and an unsymmetric radial basis function method. The equilibrium morphology in nanodroplets is shown to represent a delicate balance between bu…
Microcrystals of FeII(phen)2(NCS)2 (phen = 1,10-phenanthroline), isolated by solvent-induced precipitation, were dispersed in glassy or semicrystalline matrices and subjected to thermal or chemical treatments. Interactions occurring between crystals and their macromolecular (or molecular) surroundings were revealed by…
We synthesized two series of diphenyl-diacetylene (DPDA)-based materials with alkoxy and alkyl tails of length m (DPDA–OCm and DPDA–Cm, respectively), and measured their nematic-phase birefringence (Δn) as a function of wavelength and temperature. We found that Δn decreases with an increase in m, possibly by a dilutio…
Vertically oriented WO3 nanoflakes woven from nanowires were obtained using a crystal-seed-assisted hydrothermal technique on a glass substrate coated with fluorine-doped tin oxide (FTO). Investigation of the growth process revealed that two types of nanowire, along the (100) and (002) planes, respectively, were forme…
A novel signal enhanced liquid crystal biosensor based on using AuNPs for highly sensitive DNA detection has been developed. This biosensor not only significantly decreases the detection limit, but also offers a simple detection process and shows a good selectivity to distinguish perfectly matched target DNA from two-…
We report the first high temperature solution state synthesis of glutathione (-SG) protected atomically precise silver clusters. Noble metal cluster synthesis from metal ions generally requires ice cold temperatures as they are extremely sensitive and high temperature routes are used only for core reduction methods, s…
Thin films of polyethylenimine (PEI) and poly(acrylic acid) (PAA), deposited using layer-by-layer assembly, were studied to understand the influence of various crosslinking methods on their oxygen and water vapor barrier. Glutaraldehyde (GA), 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide methiodide (EDC) and thermal…
As the colour palette of solution processable electrochromic conjugated polymers has extended from hues of purple and blue to vibrant colours such as yellow, orange, red, green, and cyan, the need for a counter electrode material that provides charge balance in electrochromic devices, but lends minimal colour, has bec…
Metal-enhanced fluorescence carbon dots adsorbed Ag@SiO2 composite nanoparticles, where the silica-shell is used to control the distance between silver-core and fluorescent carbon dots (CDs). A more than four-fold increase of fluorescence intensity of CDs was obtained, besides, a largely enhanced upconversion property…
Graphene oxide (GO)/polyvinyl alcohol (PVA) composites were prepared and thoroughly characterized. Through a convenient effective method, uniformly dispersed reduced graphene oxide (rGO)/PVA composites could be obtained by swelling the PVA matrix with a reductant solution. The electrical conductivity of the composite…