Materials Literature
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The reaction of Mn(ClO4)2·6H2O, a derivatised phenolic oxime (R-saoH2) and the ligand tris(2-pyridylmethyl)amine (tpa) in a basic alcoholic solution leads to the formation of a family of cluster compounds of general formula [Mn(III)2O(R-sao)(tpa)2](ClO4)2 (1, R = H; 2, R = Me; 3, R = Et; 4, R = Ph). The structure is t…
This review article describes and discusses the physical properties of three major classes of biomacromolecules, namely polysaccharides (PS), polypeptides (PP), and polynucleotides (PN). PP and PN can be classified as amphiphilic systems as they possess hydrophobic and hydrophilic moieties that are responsible for the…
A series of model catalysts were prepared by depositing different size Pd(n) clusters on alumina films grown to variable thickness on a Ta(110) support. Samples were characterized by a combination of X-ray photoelectron spectroscopy, low energy He+ scattering, and temperature-programmed reaction and desorption (TPR/ T…
Nanocrystalline PbS thin films were prepared by Chemical Bath Deposition (CBD) at 40 ± 2°C onto glass substrates and their structural and optical properties modified by in‐situ doping with Hg. The morphological changes of the layers were analyzed using SEM and the X‐rays spectra showing growth on the zinc blende (ZB)…
Click Stress Corrosion Cracking (SCC) is an environmentally well-known as a failure caused by exposure to a corroding while under a sustained tensile stress. SCC is most often rapid, unpredictable. Failure can occur in a short time as a few hours or take years and decades to happen. Most alloys are liable to SCC in on…
In this work, we first report a thermo-responsive photoluminescent polymer brushes device as a platform for the selective and sensitive detection of Cr(VI). Positively charged fluorescent molecules of a quaternary ammonium tetraphenylethylene derivative (d-TPE) are immobilized in the thermo-responsive polymer brushes…
Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digita…
The study of pathogen interactions with eukaryotic host cells requires the introduction of fluorescent probes to visualize processes such as endocytosis, intracellular transport or host cell manipulation by the pathogen. Here, three types of fluorescent nanoparticles (NPs), i.e. Rhodamine-labeled polymethacrylate (PMA…
We report an effective and facile method for synthesis of FePt-Au hybrid nanoparticles (HNPs). The typical secondary growth of Au proceeded in the presence of FePt seeds in organic solvents under a specific atmosphere. Interestingly, the type of atmosphere (Ar or Ar-H₂) and the size of selected FePt seeds were two maj…
Novel flexible composite fibers with good structural stability were fabricated by coating nanostructured polyaniline (PANI) layers on the surface of traditional polyurethane (PU) fibers through in situ chemical oxidative polymerization. Their chemoresistive characteristics for organic vapor compounds showed a rapid an…
Trialkoxysilyl terminal groups were directly introduced into fluorescent organic dye molecules by consecutive allylation and hydrosilation reactions; the derivatized dye molecules were then successfully embedded into silica nanoparticles by the Stöber method. Those fluorescent silica nanoparticles (FSNPs) had emission…
One of the obstructive problems of luminogenic molecules is aggregation caused quenching (ACQ) and as a result they lose their emissive property when they turn into a solid from their solution form. Therefore, there is an increase in the demand for molecules having the aggregation induced emission (AIE) property, the…
The pH responsive hybrid microgels containing homogeneously distributed silver nanoparticles (Ag NPs) were created by in situ reduction of Ag+ ions coordinated into the microgels with semi-interpenetrating polymer network structure composed of linear poly(acrylic acid) and crosslinked poly(N-isopropylacrylamide). When…
Disordered layered p-type bismuth telluride was obtained by high pressure (1 GPa) and high strain deformation along the c-axis direction of commercially available single crystals. After initial deformation the p-type bismuth telluride flakes were subsequently fully densified by cold pressing (800 MPa at room temperatu…
A new redox-active ligand, tris(4-(pyridin-4-yl)phenyl)amine (Npy3), has been synthesised, and incorporated into the coordination framework [Cu(Npy3)Cl2]·DMF. The monoradical cation of the ligand is readily accessible, thus enabling chemical oxidation of the framework. The novel Npy3 ligand has significant potential a…
This paper describes the development of physically and/or chemically modified chitosan membranes to probe cellular behaviors and molecular-level structural responses of NIH-3T3 fibroblasts (normal cells) and Ha-ras-transformed cells (abnormal cells) adhered onto these modified membranes. To prepare chitosan membranes…
An aza-15-crown-5-ether functionalized bisthienylethene (BTE-15C5) was synthesized, which can reversibly capture and release calcium ions by UV/Vis irradiation. After doping this photochromic bisthienylethene with a two-component lecithin-Ca(2+) organogel, the original deep-blue gel changed to light-blue fluid due to…
The electronic structure of SrAlSi4N7 was calculated using the CASTEP code and SrAlSi4N7 is an intermediate band gap semiconductor with an indirect energy gap of 3.6 eV. Ce3+ and Yb2+-activated SrAlSi4N7 samples were prepared by a solid-state reaction method at high temperature, and their photoluminescence properties…
In this contribution, Fe3O4 magnetic nanoparticles (MNPs) have been functionalized with a tetraphosphonate cavitand receptor (Tiiii), capable of complexing N-monomethylated species with high selectivity, and polyethylene glycol (PEG) via click-chemistry. The grafting process is based on MNP pre-functionalization with…
We observe the spontaneous formation of hollow cobalt oxide nanoparticles at room temperature, indicating an enhancement of the solid-state diffusion at the nanoscale. Single crystal cobalt nanoparticles covered by a hydrophobic organic layer were transformed spontaneously into CoO hollow nanoparticles when deposited…