Materials Literature
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A series of zinc complexes with oximate ligands is investigated for their suitability as precursors for zinc oxide in inkjet printing. The variation of hydrogen and alkyl groups in the side chains of the oximate framework (R1–ON–C2O2–R2) of the corresponding zinc complexes influences the decomposition temperature, and…
Single-walled carbon nanotubes (SWCNTs) with large diameters (LDs) (≥3 nm) have wide applications. But, up to now, the synthesis of these novel nanostructured carbon materials is still a great challenge, and exploration of a simple synthesis method suitable for economical and large-scale production is still an importa…
Seven soluble metal nanoparticle catalysts including Pt, Ru, Rh, Pd, Ir, Ag and Au were synthesized and studied for the aqueous-phase selective oxidation of non-activated alcohols under atmospheric pressure of O2. The effects of particle size were examined on the Pt catalysts with mean diameters of 1.5–4.9 nm. Pt nano…
Stable Au and Ag nanoparticles with diameter 5–10 nanometers were synthesized in water at pH 7 and at room temperature by a novel green photocatalytic method. The method features very low energy consumption and non-toxic reagents with high yields of concentrated nanoparticles in aqueous solution obtained in less than…
Nanoparticle technology refers to research and technology developed at the atomic or molecular level for materials of approximately 1-100 nm in length. Through accidental or involuntary exposure, nanoparticles are potentially toxic to the body, including reproductive organs. Ovarian granulosa cells play a major role i…
Despite impressive advances in chemistry and biology, the mimicking of the complexity and functionality of natural cells in artificial systems still remains in its infancy. Liposomes for instance have been extensively used to reproduce some basic properties of cells and particularly biological membranes, whereas other…
Solid solutions of two isotypic compounds from the end members LaSr2AlO5 and Sr3SiO5 are hosts for Ce3+ activator ions, allowing for careful tuning of the various parameters associated with efficient solid state (blue + yellow =) white lighting. By incorporating this phosphor with an encapsulant on InGaN light-emittin…
We present a new convenient and efficient ‘grafting-from’ method to obtain well-defined polystyrene (PS) silica nanoparticles. The method, based on nitroxide-mediated polymerization (NMP), consists of binding covalently the alkoxyamine (which acts as an initiator controlling agent) to the silica nanoparticles surface…
The coordination chemistry of porphyrins and related tetrapyrrolic ligands has traditionally centered around the ability of these systems to form pyrrole N-ligated complexes via the formation of sigma bonds, either within the N(4) core or displaced above it. In fact, such sigma-complexes are known with almost every me…
A new mesoporous polymer, mesoporous poly-triallylamine (MPTA-1), has been synthesized by a simple and facile in situ radical polymerization of triallylamine through organic–organic self-assembly of anionic or anionic/non-ionic mixed surfactant systems. Powder XRD and TEM image analysis suggests the presence of disord…
We present a facile route to fabricate nanoporous gold composites (NPGCs) through chemical dealloying of two phase Al–Au alloys comprising Al2Au and AlAu intermetallic compounds under free corrosion conditions. The microstructures of the NPGCs were characterized using X-ray diffraction, scanning electron microscopy wi…
TiO(2) nanoparticles hazard is associated to their photocatalytic activity causing release of DNA damaging ROS (Reactive Oxygen Species), lipid peroxidation and skin damage. Various coatings have been proposed to minimize photocatalysis, while keeping the potential to block UV radiations. Uncoated and variously coated…
High-surface-area CexFe1−xO2 solid solutions about 5 nm in size have been successfully prepared by using ultrahigh surface area carbon material as template and cerium and iron nitrates as oxide precursor. The obtained materials were characterized by means of N2 physisorption, X-ray diffraction, Raman spectroscopy, ele…
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Being biocompatible and biodegradable, magnesium alloys are considered as the new generation biomedical implant materials, such as for stents, bone fixtures, plates and screws. A major drawback is the poor chemical stability of metallic magnesium; it corrodes at a pace that is too high for most prospective implant app…
The extracellular matrix is a key component during regeneration and maintenance of tissues and organs, and it therefore plays a critical role in successful tissue engineering as well. Tissue engineers should recognise that engineering technology can be deduced from natural repair processes. Due to advances in such dis…
Electrochromic devices based on poly(3,4-ethylenedioxythiophene) (PEDOT) as the cathodic coloring electrode and polyaniline (PANI) or Prussian blue (PB) as the counter electrode containing a highly conductive, self-supporting, distensible and transparent polymer-gel electrolyte film encapsulating an ionic liquid, 1-bu…
ZnO nanoparticles of size 2–10 nm were generated in situ from the single source precursor [2-(methoxyimino)propanoato]zinc(II), ([CH3ONCCH3COO]2Zn·2H2O) onto multiwalled carbon nanotubes (MWCNTs) at low temperature (150 °C). The degree of ZnO coverage on the MWCNTs can be tuned and is dependent upon the ZnO precursor…
An overview of the recent developments in functional dyes, which are useful for hi‐tech applications for those based on optoelectronics, such as dye sensitized solar cells, photochromic dyes and biomedical applications, such as photodynamic therapy for the treatment of cancer and fluorescent sensors is presented.
A heterometallic lanthanide complex has been prepared by sequential deprotection and complexation of an orthogonally protected ligand: luminescence and NMR spectroscopy have been used to probe the integrity of the complex.