Materials Literature
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Micro/nano-structured poly (3,4-ethylenedioxythiophene) (PEDOT) has shown a broad range of potential applications in various fields. In this work, PEDOT micro/nanostructures including hollow spheres and double-layer bowls, which exhibit typical hierarchical three-dimensional micro-structures assembled from one-dimensi…
Semimagnetic Pb(1-x)Mn(x)Se nanocrystals were synthesized by a fusion method in a glass matrix and characterized by optical absorption (OA), atomic/magnetic force microscopy (AFM/MFM), and photoluminescence techniques. MFM images strongly indicated the formation of Pb(1-x)Mn(x)Se magnetic phases in the glass system. Q…
In this work, a miniemulsion template method was proposed to prepare a porous polymeric monolith with an inter-connected structure. The preparation of a porous monolith with sub-micrometer pore structure was realized and showed great potential to prepare a nanoscale porous monolith with an inter-connected structure. A…
Tumor targetability and stimuli responsivity of drug delivery systems (DDS) are key factors in cancer therapy. Implementation of multifunctional DDS can afford targetability and responsivity at the same time. Herein, cholesterol molecules (Ch) were coupled to hyaluronic acid (HA) backbones to afford amphiphilic conjug…
Biocompatible and biodegradable nanogels with a branched structure designed as potential carriers for drug delivery are reported here. The nanogels were prepared by the reaction of 3,6-dioxaoctan-1,8-diyl bis(ethylene phosphate) (TEGDP) with tris(2-aminoethyl)amine (TREN) in an ionic liquid containing miniemulsion; th…
Self-assembled monolayers (SAMs) of alkanethiolates on gold are chemically defined substrates that can be used to evaluate the effects of an immobilized biomolecule. However, the types of biomolecules that can influence stem cell behavior are numerous and inter-related, and efficient experimental formats are a critica…
Active laser arrays, of arbitrary pattern, were created by inkjet deposition of self-assembled photonic structures in the form of dye-doped chiral nematic liquid crystals. The print process itself achieves the requisite alignment for photonic band-edge lasing action normal to the substrate; laser threshold and linewid…
We address the crystallization of monodisperse hard spheres in terms of the properties of finite-size crystalline clusters. By means of large scale event-driven molecular dynamics simulations, we study systems at different packing fractions ϕ ranging from weakly super-saturated state points to glassy ones, covering di…
A radiation shield was developed from environmental-friendly materials as a potential replacement for the lead aprons used as shields against radiation produced in radiological examinations. For this, a radiation shielding sheet was manufactured using barium sulfate, which is not harmful to the human body, and its per…
The perovskite SrTiO(3) is arguably one of the most important oxide systems in condensed matter research. In this study, we report measurement of the orientation dependence of oxygen exchange on SrTiO(3) single crystal surfaces by dynamic conductivity measurements under electrochemical perturbations. Activation energy…
ZnFe2O4 nanoparticles were tightly packed and encapsulated in chitosan nanospheres by a nonsolvent-aided counterion complexation method. The obtained hybrid nanospheres exhibited not only the superparamagnetic properties provided by pure ZnFe2O4 nanoparticles but also a much higher r2 relaxivity value than separate Zn…
Theoretically predicted effect of odd-even pattern of electron pairing on behavior of gold clusters in polyaniline/Au N (N = 0 to 8) has been confirmed experimentally. In these composites the atomic Au clusters with even number of atoms exhibit higher catalytic activity for electrochemical oxidation of n-propanol in 1…
Nanocomposites of single‐walled carbon nanotubes dispersed within polyvinylchloride have been obtained by using the solution path. High‐power sonication was utilized to achieve a good dispersion of carbon nanotubes. Thermogravimetric analysis revealed that during the synthesis, processing, or thermal analysis of these…
A photochromic diarylethene, 1,2-bis(2-methyl-6-nitro-1-benzothiophen-3-yl)perfluorocyclopentene (1a), can undergo crystallization from the amorphous film in poly(methyl methacrylate) (PMMA) at 130 °C. The contact angle with water on the film changed from 82 to 132° upon crystallization. Moreover, by heating at 180 °C…
The structurally based viscosity model proposed in our previous study is extended to include more components, e.g. SiO2, Al2O3, FeO, MnO, MgO, CaO, Na2O and K2O. A simple method is proposed to calculate the numbers of different types of oxygen ions classified by the different cations they bonded with, which is used to…
Carbon spheres were obtained via the Stöber method using phenolic resin followed by carbonization. Spherical carbon-gold core-shell particles were fabricated by deposition of gold nanoparticles on the modified surface of carbon spheres.
This study investigates two apparently similar thermal signatures, shaped as bimodal exotherms, observed when either the crystalline or the amorphous from of the drug are subjected to milling. Crystalline griseofulvin was cryomilled and the (quenched-melt) amorphous form was subjected to either cryomilling or grinding…
The thermal evaporation system type (Edwards) has been used to evaporate high purity (99.9%) silver on quartz and (n-type) silicon substrates at room temperature under low pressure (about10-6torr) for different thickness (50, 100, and 150) nm. Using a rapid thermal oxidation (RTO) of Ag film at oxidation temperature 2…
A series of controlled current cycling experiments have been conducted to investigate the effect of barium hydroxide on the rechargeable performance of the alkaline manganese dioxide cathode. Analysis of the resulting discharge behavior revealed that the inclusion of Ba(OH) 2 suppresses the dissolution of Mn 3+ ions d…
We have synthesized new D-A-D type phosphorus(V) porphyrin derivatives and functionalized with axial carbazolylvinylnaphthalimide units. The absorption bands of the obtained phosphorus(V) porphyrins were in the range 250-640 nm with high molar absorption coefficients, meaning strong light-harvesting abilities. Notably…