Materials Literature
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Core‐shell‐structured CdSe/SiO x nanowires were synthesized on an equilateral triangle Si (111) substrate through a simple one‐step thermal evaporation process. SEM, TEM, and XRD investigations confirmed the core‐shell structure; that is, the core zone is single crystalline CdSe and the shell zone is SiO x amorphous l…
A facile method is reported to manipulate a diphenylalanine peptide into hierarchically ordered structures with interesting peony-like flower morphology in the organic solvent tetrahydrofuran. The flowers formed in THF and showed, by scanning electron microscopy, that they are actually flake-built spherical aggregatio…
In order to understand how nanoparticles (NPs <100 nm) interact with cellular systems, potentially causing adverse effects, it is important to be able to detect and localize them within cells. Due to the small size of NPs, transmission electron microscopy (TEM) is an appropriate technique to use for visualizing NPs in…
Galvanic wet etching was adopted to fabricate Si nanowire arrays (NWAs) as a near-perfect subwavelength structure (SWS), which is an optically effective gradient-index antireflection (AR) surface and also exhibits super-hydrophobicity with an extremely high water contact angle (159°). Fresnel reflection and diffuse re…
We report on the successful synthesis of ordered mesoporous WO3−X with a high conductivity comparable to a mesoporous carbon framework. Ordered mesoporous WO3−X was prepared using KIT-6 as a hard template. Some WO3−X particles have negative replica structures of KIT-6 template and the other particles are generated by…
An achiral molecular square and a chiral chain composed of cyanide bridged Fe(III) and Ni(II) ions were prepared, and they act as a single molecule magnet and a chiral single chain magnet, respectively.
We demonstrate a unique approach for preparing high quality iron oxide (Fe3O4) nanoparticles functionalized by newly developed multifunctional dendron ligands for biomedical applications. These particles are suitable for magnetic resonance imaging (MRI), highly stable in aqueous solutions as well as physiological medi…
Strontium titanate (SrTiO(3)) nanoparticles with well defined cubic shape and sub-10 nm size that are highly dispersible in non-polar organic solvents were successfully synthesized by hydrothermal (HT) processing. Water-soluble titanium complexes and strontium hydroxide were employed as precursors. When the HT process…
Semiconductor nanoparticles are promising for use as electron acceptors in polymer-based bulk heterojunction solar cells. Potential advantages over fullerene derivates that are widely used in organic photovoltaics are tuneable absorption properties and the possibility to use elongated nanoparticles for more efficient…
A novel class of efficient visible light sensitized antenna complexes of Eu3+ based on the use of a highly conjugated β-diketonate, namely, 1-(4-biphenoyl)-3-(2-fluoroyl)propanedione (HBFPD) and 1,10-phenanthroline as an ancillary ligand has been designed, synthesized, characterized and their photophysical properties…
The thermal transformation of aragonite to calcite in synthetic and biogenic aragonite (mussel nacre) is studied using Raman spectroscopy, high temperature synchrotron powder diffraction and scanning electron microscopy (SEM). Anomalous thermal behaviour in the form of plateau regions in the lattice parameter expansio…
A series of neutral lanthanide aryloxides supported by an amine bridged bis(phenolate) ligand were synthesized, and their catalytic behavior for the polymerization of L-lactide was explored. The reactions of (C(5)H(5))(3)Ln(THF) with amine bridged bis(phenol)LH(2) [L = Me(2)NCH(2)CH(2)N{CH(2)-(2-O-C(6)H(2)-Bu(t)(2)-3,…
We present a novel hybrid cationic polymer based on polyhedral oligomeric silsesquioxanes (POSS). This is the first report of using a cationic POSS-based material for gene delivery. Due to its amphiphilic properties, hydrophobic drugs such as paclitaxel can be encapsulated within the hydrophobic core of this polymer.…
A new organosilane precursor has been designed via Vilsmeier–Haack formylation of phloroglucinol followed by its Schiff base condensation with 3-aminopropyl-triethoxysilane (APTES). A novel organic–inorganic hybrid periodic mesoporous organosilica (PMO) LHMS-3 containing the highly coordinating bis(propyliminomethyl)-…
Biopolymer films containing chitosan as antimicrobial agent were obtained . As polymer matrix poly(vinyl alcohol) (PVA) and bacterial cellulose (BC) were used. The films were characterized using FTIR spectroscopy. FTIR spectra of the pure components and of composites films reveal strong interactions between chitosan a…
The platinum(II) terpyridine acetylide complex, [Pt(ttpy)(CCPh)]ClO4 (1, where ttpy = 4′-p-tolylterpyridine), sensitizes the 3π–π* excited state of 9,10-diphenylanthracene (DPA) that in turn produces upconverted fluorescence via triplet–triplet annihilation (TTA). The photoluminescence of 1 is readily quenched by DPA…
A series of mesoporous NiO/NiCo2O4/Co3O4 composites has been synthesized by nanocasting using SBA-15 silica as a hard template. The evaporation method was used as the impregnation step. Nickel and cobalt nitrates in different Ni(II) : Co(II) molar ratios were dissolved in ethanol and used as precursors. The composites…
Paclitaxel is an anti-leukemic, anti-tumor or in general an anti-neoplastic agent. It was first isolated from the bark of the pacific Yew tree, Taxus breviofolia. Paclitaxel drug is used to treat ovarian, breast and lung cancers. Spectroscopic investigations on Pharmaceutical samples are of importance in present. Vibr…
Biocompatible and water-soluble magnetic nanoparticles with mesoporous core-shell structure were prepared and successfully modified with a fluorescent polymer chain as a labelling segment and folic acid as the cancer targeting moiety and loaded with a drug for directional release. The porous silica oxide structure and…
Single-walled carbon nanotubes (SWCNTs) have been used as fillers to produce electrically conductive composite papers. While conductive composite papers have been made using other fillers, they either suffer from instability or low conductivity. Using simple papermaking techniques, we have made SWCNT–cellulose composi…