Materials Literature
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Numerous colloidal particles have been designed for cellular uptake and intracellular delivery in biological systems. The different kinds of colloidal particle systems and the interactions between the particles and cells are highlighted, with a focus on the parameters governing cellular uptake. A perspective of the re…
In this paper, Mn2+-doped ZnSe quantum dots (Mn:ZnSe d-dots) are synthesized successfully by a nucleation–doping method in aqueous solution with mercaptopropionic acid as the stabilizer. The optimal precursor ratio and kind of stabilizer for obtaining Mn:ZnSe d-dots with good photoluminescence emission properties was…
We compare the phase behavior of a mutant filamentous virus, fd Y21M, to that of a conventional fd wild-type (wt). We find significantly different macroscopic phase behavior despite the only microscopic difference between the two viruses being in a single amino acid of the major coat protein pVIII. Compared to fd wt,…
A mesoporous silica nanoparticle-based intracellular cysteine delivery system that could be induced and regulated by cell-produced natural antioxidants was synthesized.
Methyl esters were prepared by the clean, one-step catalytic esterification of primary alcohols using molecular oxygen as a green oxidant and a newly developed SiO2-supported gold nanoparticle catalyst. The catalyst was highly active and selective in a broad range of pressure and temperature. At 3 atm O2 and 130 °C be…
An efficient red phosphor, BaMoO4:Pr3+, has been fabricated by a convenient solid-state method. A strong red emission centered at 643 nm corresponding to the 3P0→3F2 transition of Pr3+ is observed under 430–500 nm excitation. In addition, improvement of the intensity of the red emission has been achieved by adding an…
A phytochemical study on the flowe r of Calotropis gigantea (Linn.) using silica gel column chromatography and preparative thin layer chromatography, led to the first time isolation of Di-(2-ethylhexyl) phthalate (compound 1) and anhydrosophoradiol-3-acetate (compound 2). The structures of these compounds were confirm…
Structure elucidation of a condensed carbon(IV) nitride with a stoichiometry close to C3N4 by electron diffraction reveals a two-dimensional planar heptazine-based network containing isolated melamine molecules in the trigonal voids.
One-dimensional CaWO4 and CaWO4:Tb3+ nanowires and nanotubes have been prepared by a combination method of sol-gel process and electrospinning. X-Ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), photoluminescenc…
Ordered Co3O4 hierarchical nanorod arrays have been fabricated employing pulsed laser deposition (PLD) on polystyrene colloid spheres followed by an annealing process in air. The surface roughness and chemical composition were controlled successfully by adjusting the oxygen pressure during the PLD process and post-ann…
1. Theory of organocopper-mediated reactions ( Eiichi Nakamura and Naohiko Yoshikai ). 2. Structural organocopper chemistry ( Gerard van Koten and Johann T. B. H. Jastrzebski ). 3. Thermochemistry of organocopper compounds ( Joel F. Liebman and Suzanne W. Slayden ). 4. NMR spectra of organocopper compounds ( Tobias Ga…
Organic electro-optic (EO) materials are of considerable interest owing to their attractive characteristics for applications in high-speed information processing and sensing. The purpose of this review is to highlight the areas of special significance in recent organic EO materials development. Particular attention is…
Commercial products using organic light emitting diode (OLED) display technology have begun to appear in cell phones, mp3 players and even televisions. One key area that has allowed and will allow for this technology to continue its ascension into the flat panel display and lighting markets is materials R&D. From this…
Grand Canonical Monte Carlo (GCMC) simulations are performed to study hydrogen physisorption in different nano carbon porous materials made up of different substructures including carbon nanotubes (CNT), graphene sheets and C60. Hydrogen weight percentage (wt%) at different temperatures with pressure ranging from 1 to…
A low-cost, green and reproducible probiotic microbe (Lactobacillus sporogens) mediated biosynthesis of ZnO nanoparticles is reported. The synthesis is performed akin to room tem-perature in five replicate samples. X-ray and transmission electron microscopy analyses are performed to ascertain the formation of ZnO nano…
The oxidative lactonization of various diols using molecular oxygen as a primary oxidant can be efficiently catalyzed by hydrotalcite-supported Au nanoparticles (Au/HT). For instance, lactonization of 1,4-butanediol gave γ-butyrolactone with an excellent turnover number of 1400. After lactonization, the Au/HT can be r…
The unique structure of carbon nanotubes endows them with fantastic physical and chemical characteristics. Carbon nanotubes have been widely studied due to their potential applications in many fields including conductive and high‐strength composites, energy storage and energy conversion devices, sensors, field emissio…
Catalytic degradation of organic dye molecules has attracted extensive attention due to their high toxicity to water resources. In this paper, we propose a novel method for the fabrication of uniform silver-coated ZnO nanowire arrays. The degradation of typical dye molecule rhodamine 6G (R6G), as an example, is invest…
An experimental study aimed at understanding the interactions between exopolymers exuded by microorganisms and clays, particularly kaolinite, is described. Two biopolymers–-xanthan gum, an anionic bacterial extracellular polysaccharide, and guar gum, a neutrally charged plant polysaccharide–-were used as exopolymer an…
The aim of this work was to study the influence of calcium carbonate nanoparticles in both tensile and impact mechanical properties of a polypropylene homopolymer. Four compositions of PP/CaCO3 nanocomposites were prepared in a co-rotational twin screw extruder machine with calcium carbonate content of 3, 5, 7 and 10…