Materials Literature
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Poly(L-lactic acid) (PLLA) is a potential candidate for a new renewable resource, but often suffers from a sharp decrease in the storage modulus and heat distortion resistance when the temperature is higher than 60 °C. In this work, reduced graphene oxide (RGO) was introduced to composite with PLLA, which greatly impr…
Compared to single photoluminescence (PL) intensity-based sensors, dual-emitting-based ratiometric PL sensors are more preferable because the influence from PL fluctuation in the reagents and background PL can be reduced to a minimum. However, so far no report has been directed to the ratiometric PL detection of 5-flu…
In this paper we report a study of novel thermally stable surface enhanced Raman scattering (SERS) substrates consisting of Ag nanoparticles immobilized on an anodized aluminum oxide (AAO) support. The morphological and chemical characteristics and the SERS activity of the Ag nanoparticles before and after the thermal…
Iron oxide nanoparticles (IONPs) with diameters of 15, 25, and 41 nm were evaluated as mediators of thermal cytotoxicity under radio-frequency (RF) exposure. The 25 nm IONPs were found to be the most efficient of the three in killing cancer cells at 350 kHz low-frequency RF irradiation. However, at a higher frequency…
Tuning electronic band gaps of materials has proven very challenging, but is fundamentally relevant for optoelectronic applications. We demonstrate that a widely and continuously tunable band gap can be realized in the single-gated bilayer silicene. Bilayer silicene in which 50% of the Si atoms take sp3 hybridization…
The morphologies and phase diagrams exhibited by symmetric ABC star triblock copolymer nanoparticles are investigated by using the real-space self-consistent field theory. A variety of three-dimensional morphologies, such as spherically concentric lamellae and ring-like structures, are identified in the triangular pha…
A self‐assembled metamaterial exhibiting a positive near‐zero index of refraction at visible wavelengths is demonstrated. The metamaterial consists of thiolene‐functionalized gold nanospheres self‐assembled into macroscopic, crosslinked, monolayers. By measuring the real and imaginary parts of the phase shift of light…
Dimethyl ether oxidation was conducted over MoO3–SnO2 catalysts prepared from different Sn salt precursors. Over the MoO3–SnO2 catalyst prepared from SnCl4, methyl formate selectivity reached 94.1% at 433 K without the formation of COx. The performance of the catalyst was determined by the existence form of MoO3 and t…
Bacterial cellulose, which is inherently a non-magnetic hydrogel, has been made magnetic by the infiltration of Ni-nanoparticles via a simple aqueous phase salt reduction method. The resulting hydrogel, when converted to the aerogel and xerogel forms, exhibits different magnetic behaviour due to the microstructural ch…
The lanthanide coordination chemistry of a tri-functional vanillin-hydrazone-oxime ligand reveals a variety of different products, depending on reaction conditions, with mono-nuclear (Dy), dinuclear (Yb, Tm), tetranuclear (Gd) and hexanuclear (Gd, Tb, Dy) examples. The Ln6 (Ln = Gd, Dy, Tb) complexes form in the prese…
This paper examines differences in the cooperative interaction between carbon nanotubes (CNTs) and Ru particles loaded on their internal/external surface. The techniques used were transmission electron microscopy, X-ray photoelectron spectroscopy, CO chemisorption, X-ray diffraction, N2 physisorption, hydrogen tempera…
In the search for noninvasive diagnostic techniques and new therapies, "nanosystems", which are capable of binding and targeting bioactive molecules, are becoming increasingly important. In this context, biocompatible coatings are gaining interest, not only for their biological effects but also because they are consid…
Copper is considered to be the most promising substrate for the growth of high-quality and large area graphene by chemical vapor deposition (CVD), in particular, on the (111) facet. Because the interactions between graphene and Cu substrates influence the orientation, quality, and properties of the synthesized graphen…
Ethylene glycol-functionalised copper(II) carboxylates Cu[O2CCR2(OC2H4)nOCH3]2 (n = 0-3; R = H, Me) (2a-e) have been prepared by the reaction of [Cu2(OAc)4·2H2O] with CH3O(C2H4O)nCR2CO2H (1a-e). Upon reduction of 2a-e with triphenylphosphine, the corresponding tris(triphenylphosphine)copper(I) complexes 3a-e were obta…
The use of Quantum Dots (QDs) as fluorescent probes for understanding biological functions has emerged as an advantageous alternative over application of conventional fluorescent dyes. Intracellular delivery of QDs is currently a specific field of research. When QDs are tracking a specific target in live cells, they a…
The mesoporous carbon nanofiber arrays that stand on carbon-gold double-layer current collectors are synthesized by self-assembly of a PS-b-PEO copolymer and resol in AAO templates for a high-power micro-supercapacitor at high current densities.
In the study, we present the results of thermodynamic simulation of CaSO4 water-salt systems containing Ca 2+ , Mg 2+ , Na + , K + and HCO - 3 at 37°C. The results showed that the solubility of CaSO phase increased with increasing NaCl as wells as KCl concentration in the range of 0.0 to 2.0 M and 0.0 to 1.0 M, respec…
We investigate metal-enhanced fluorescence of peridinin-chlorophyll protein coupled to silver nanowires using optical microscopy combined with spectrally and time-resolved fluorescence techniques. In particular we study two different sample geometries: first, in which the light-harvesting complexes are deposited onto…
Perovskite type catalysts La1-xSrxCoO3 (x=0, 0.2) composition prepared by co precipitation method which were tested for carbon monoxide (CO) oxidation. The prepared perovskite samples were characterized by X-ray diffraction (XRD), BET surface area, scanning electron microscope (SEM), energy dispersive X-ray spectrosco…
High-molecular-weight poly(N,N-dimethylacrylamide-co-acrylamide) was used as a model functional substrate to investigate phosphazene base (t-BuP4)-promoted metal-free anionic graft polymerization utilizing primary amide moieties as initiating sites. The (co)polymerization of epoxides was proven to be effective, leadin…