Materials Literature
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Sub-micron-sized [Fe(Htrz)(2)(trz)](BF(4))·H(2)O nanoparticles that exhibit a spin crossover transition are positioned between Au electrodes with sub-100 nm separation. After voltage poling, samples exhibit unexpected large conductivity, with photoconductance and photovoltaic behavior.
Polymer brush-based three-dimensional (3D) structures are emerging as a powerful platform to engineer a surface by providing abundant spatially distributed chemical and physical properties. In this feature article, we aim to give a summary of the recent progress on the fabrication of 3D structures with polymer brushes…
A facile, dissolution-free route to direct synthesis of hexagonal magnesium hydroxide nanoplates from natural brucite is reported. Stable brucite undergoes disaggregation into thin nanosheets and subsequent solid-solid transformation in the presence of p-toluene sulfonate, circumventing the threshold of size effect fr…
Nanodiamond materials have been studied as potential drug carriers for cancer therapy. In this study, doxorubicin hydrochloride (DOX), a chemotherapy drug, was physically adsorbed onto red fluorescent nanodiamond (FND) with a size of ∼140 nm. Our results revealed that FND carrying DOX (FND-DOX) can efficiently deliver…
Specific hydrogen bond breakage by fluoride anions was observed in a simple FRET system formed by thioglycolic acid modified CdTe quantum dots and citrate-capped gold nanoparticles.
A stable aqueous dispersion of poly(3,4-ethylenedioxythiophene) (PEDOT) nanorods stabilized by graphene oxide (GO) has been successfully prepared via interface polymerization of EDOT in the presence of GO for the first time. The non-covalent functionalization of PEDOT by GO leads to a PEDOT-GO dispersion that can be s…
An ionic liquid (IL) assisted solvothermal method is employed to prepare single phase, oxygen free, hexagonal NaGdF4:Eu3+ (2 mol%) nanorods with a visible quantum efficiency of 187%. In contrast, for mixed materials containing cubic and hexagonal NaGdF4:Eu3+, the quantum efficiency is much less (127%). Thus, synthesis…
The self-assembly of core-substituted naphthalene diimides bearing triethylene glycol motifs leads to the formation of stable vesicles in DMSO and CHCl(3)/MeOH (6 : 4, v/v) solvents. The vesicles were evaluated by means of UV/vis and fluorescence spectroscopy, transmission electron microscopy, atomic force microscopy…
Conducting polymer hydrogels with unusual 2D building blocks were synthesized in one step via a combination of oxidative coupling polymerization and non-covalent crosslinking of an amphiphilic thiophene derivative. Chemicals with standard electrode potentials higher than 0.8 V triggered disbanding of the resulting con…
Highly (100)-textured Pb(Zr0.53Ti0.47)O3 films (Lotgering factors ≥90%) with thicknesses ranging from 20 to 260 nm were grown on platinized Si substrates using sol-gel deposition. Ferroelectric hysteresis, low field dielectric permittivity, and nonlinear dielectric response as well as converse longitudinal piezoelectr…
Two unique dysprosium(III) coordination compounds with similar dodecanuclear clusters composed of four vertex-sharing cubane-like units, [2Cl− ⊂ {Dy12(OH)16(phenda)8(H2O)8}]2+, were reported. Magnetic studies reveal that both compounds exhibit slow magnetic relaxation.
We show an order of magnitude increase in yield strength and Young's modulus of poly(propylene carbonate) (PPC) by adding a small amount of graphene oxide (GO) nanosheets, accompanied by a dramatic increase of glass transition temperature (Tg). The reinforced tensile properties are comparable to those of conventional…
The silicon age that started in the 60s of the last century has changed the world profoundly, mainly related to the invention and development of microprocessor technology. Meanwhile, the demand for silicon is driven by the photovoltaics industry that consumes about 80% of the high-purity silicon produced worldwide. In…
A slim Luneburg lens is proposed, which allows the lens to be incorporated into an antenna system through transformation electromagnetics. The transformed lens is then discretized and fed by a patch antenna to form a high-directive antenna system with low sidelobe levels and steering capabilities for wide angles and a…
Rosette nanotubes (RNTs) are novel, biomimetic, injectable, self-assembled nanomaterials. In previous studies, materials coated with RNTs have significantly increased cell growth (eg, osteoblasts, chondrocytes, and endothelial cells) due to the favorable cellular environment created by RNTs. It has also been suggested…
In this work, low concentrated ammonia solution (up to ∼10 wt.%) was used to capture from blast furnace gas (BFG), compared to exhausted gas from power plant have a high CO 2 concentration(up to ∼23 vol.%). Pilot plant with processing capacity of 50 Nm 3 -BFG/hr was built at POSCO in late 2008. Changing the operating…
A number of fascinating properties of micro/nano-fibers can be obtained as their fine-structures are tuned. Here, we report a one-step procedure to construct nanoporous polystyrene (PS) fibers loaded with controllably distributed silica nanoparticlesvia tuning the solvent compositions in electrospinning. With decreasi…
We present a simple method to gradually tune the size and to induce the shape change of CeO(2) nanoparticles via increasing the content of Yb(3+) doping.
Graphene-polyaniline nanocomposite electrodes have been developed via oxidative polymerization of aniline by MnO2 on a graphene surface for electrochemical supercapacitor applications. The formation mechanism of the above nanocomposite indicates that the MnO2 undergoes oxidative disintegration and results in porous po…
This paper describes unique plasmonic characteristics of two dimensional (2D) crystalline sheets composed of homogeneous Ag nanoparticles (AgNPs) fabricated by the Langmuir-Schaefer method at an air-water interface. The localized surface plasmon resonance (LSPR) band of the Ag nanosheet was tuned by changing the inter…