Materials Literature
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The formation of tren-based tris-urea supramolecular gels in organic solvents is perturbed by the presence of the nerve agent soman providing a new method of sensing the presence of organophosphorus warfare agents.
Density functional theory (DFT) calculations have been performed on A(2+)B2(3+)O4(2-) (where A(2+) = Fe, Ni or Zn, and B(3+) = Fe or Cr) spinel oxides in order to determine some of their thermodynamic properties. Mixing energies were calculated for Fe3O4-NiFe2O4, Fe3O4-ZnFe2O4, Fe3O4-FeCr2O4, NiFe2O4-ZnFe2O4, NiFe2O4-…
β-Substituted ferrocenyl porphyrins were designed and synthesized by the Pd-catalyzed Sonogashira cross-coupling reaction. The UV-vis absorption, emission, and cyclic voltammetric results indicate strong electronic communication between ferrocene and porphyrin. The porphyrin 4a is non-emissive in nature, while 4b and…
Usually, it is very difficult to fabricate hydrogels from hydrophobic polyaniline (PANI). In the present work, an electromechanical PANI–cellulose hydrogel, for the first time, was prepared from a PANI–cellulose transparent solution dissolved in a NaOH–urea aqueous system at low temperature by cross-linking with epich…
Oxovanadium(IV) and iron(III) salen complexes grafted onto amino-modified graphene oxide (NH2–GO) have been synthesized via a stepwise procedure and the prepared materials were used as heterogeneous catalysts in the aerobic oxidation of styrene. The structures of these materials have been thoroughly investigated using…
A naphthalene diimide motif bearing phosphonic acid functionalities has been found to be self-assembled with L- and D-arginine through chirality induced molecular recognitions and leads to the formation of micrometre long nanobelts and spherical aggregates at pH 9 in water, respectively.
Polyaniline (Pani)/ZnO nanocomposite with diameter 40–50 nm was successfully fabricated by coprecipitation method of ZnO via in situ polymerization of Pani. X‐ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), fourier transformation infrared (FT‐IR), UV‐Vis absorption spectra, thermogravi…
Titanium has been increasingly applied to biomedical application because of its improved mechanical characteristics, corrosion resistance and biocompatibility. However their application remains limited, due to the low strength and poor wear resistance of unalloyed titanium. The purpose of this study is to evaluate the…
An ultrafine grained (UFG) structure developed in precipitation hardenable Al alloys through cryorolling by suppression of dynamic recovery followed by low temperature aging has received great research interest because of its high strength and very good ductility. In the present work, Al 6061 alloy was solution treate…
Multifunctional graphene quantum dots (GQDs) conjugated layered protonated titanate (LPT) nanoflowers have been developed as a promising system for fluorescence imaging and targeted drug delivery. The layered structure of the titanate nanoflowers provides a high specific area for loading drugs. The negatively charged…
We report on the preparation of porous tubular carbon nanorods with a high surface area and excellent electrochemical properties through a template-mediated process. The synthesis involves the preparation of rod-like nickel–hydrazine complexes in a reverse micelle, sequential coating of the nanorods with a layer of ph…
A new hybrid compound, Na[Ag6(pyttz)2(H2O)][PMo12O40] (pyttz = 3-(pyrid-3-yl)-5-(1H-1,2,4-triazol-3-yl)-1,2,4-triazolyl), has been hydrothermally synthesized and structurally characterized by routine techniques. X-ray diffraction analysis reveals that the title compound is constructed by the 2D Ag-pyttz coordination p…
Active packaging is becoming an emerging food technology to improve quality and safety of food products. One of the most common approaches is based on the release of antioxidant/antimicrobial compounds from the packaging material. In this work an antifungal active packaging system based on the release of carvacrol and…
Cassava bagasse, a solid by-product of cassava starch industry, is a source of natural fibers can be used as a reinforcement filler to overcome poor mechanical property of films. This research aims to study the character of cellulose nanofibers which produced from cassava bagasse and to study the influence of its appl…
We have prepared meta-atoms based on radio-frequency superconducting quantum-interference devices (rf SQUIDs) and examined their tunability with dc magnetic field, rf current, and temperature. rf SQUIDs are superconducting split-ring resonators in which the usual capacitance is supplemented with a Josephson junction,…
Agradecimentos: The authors acknowledge Fundacao de Amparo a Pesquisa do Estado de Sao Paulo - FAPESP(03/12604-6) and Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - CAPES (BEX 4631-06-4) for financial support. This work was also part of an Industrial Partnership Programme IPP I28 of the "Stichting voor…
We investigate charge transport in pentacene-graphene nanojunctions employing density functional theory (DFT) electronic structure calculations and the Landauer transport formalism. The results show that the unique electronic properties of graphene strongly influence the transport in the nanojunctions. In particular,…
Abstract— Nanomedicine has a huge potential to bring benefits in prophylaxis, diagnosis and treatment of various diseases, with increased socio-economic benefits. Since most of the future applications of therapeutic nanoparticles (NPs) are based on intravenous/oral administration, experiments on their interaction wi…
The Zintl compound Ca5Al2Sb6 is a promising thermoelectric material with exceptionally low lattice thermal conductivity resulting from its complex crystal structure. In common with the Al analogue, Ca5In2Sb6 is naturally an intrinsic semiconductor with a low p-type carrier concentration. Here, we improve the thermoele…
Large three-dimensional poly(glycerol sebacate) (PGS)-based scaffolds were successfully fabricated via a freeze-drying and a subsequent curing process, in the presence of a minor structure-supporting polymer such as biocompatible poly(l-lactic acid) (PLLA). The resulting PGS/PLLA scaffolds exhibited highly interconnec…