Materials Literature
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Soluble tetrakis(pentaphenylphenyl)ethylene (1), prepared in three steps, allows non-emissive tetraphenylethylene (TPE) to turn into an emitter (Phi(F) = 0.13) owing to the steric bulk of the four large hexaphenylbenzene propellers which hamper =C-Ph and C=C bond rotations in the TPE core.
Single crystal and powder samples of [Co(terpy)(2)][BF(4)](2) are low spin below 100 K but show a typically gradual thermal spin-transition on warming, centred near 270 K. However, the spin-crossover exhibits an unusual and pronounced discontinuity above room temperature, when the material is ca. 87% high-spin. A crys…
Decoration of nitrogen vacancies by oxygen atoms has been studied by near-edge X-ray absorption fine structure (NEXAFS) around B K-edge in several boron nitride (BN) structures, including bamboo-like and multi-walled BN nanotubes. Breaking of B-N bonds and formation of nitrogen vacancies under low-energy ion bombardme…
Individual nanocomposite sheets of chemically reduced graphene oxide (CRG) and poly(N-vinyl pyrrolidone) (PVP), namely CRG/PVP, have been fabricated through a simple one-pot procedure. The structure and composition of the as-prepared CRG/PVP sheets were complementarily characterized using solid-state 13C NMR, atomic f…
<abstract language="eng">The increasing use of nanomaterials in several products in different areas such as electronics, cosmetics, food and drugs has attracted the attention of the scientific community due to unknown properties of these materials, such as the life cycle and the interaction with receptor organisms onc…
Test samples of ternary glass tellurite [(TeO2)65(B2O3)35]y[Ag2O]y with y = 10, 15, 20, 25, 30 mol % have been fabricated and their physical and optical properties were investigated. The optical absorption was recorded at room temperature in the wavelength range from 200 to 800 nm. From the absorption edge data, the v…
Electrospinning is a unique way to producing novel polymer nano fibres with diameter typically in the range from 10 nm to 1500nm. Large length to diameter ratio and small mass to volume ratio of these nano- sizes fibres widens the areas of their application to many industrial uses. Nylon 6 nanofibres with diameter ran…
One-dimensional (1D) boron nanostructures are very potential for nanoscale electronic devices since their physical properties including electric transport and field emission have been found very promising as compared to other well-developed 1D nanomaterials. In this article, we review the current progress that has bee…
This report shows that, of the Tween series (Tween 20, Tween 40, Tween 60 and Tween 80) of nonionic surfactants adsorbed on gold nanoparticles (NPs), Tween 80 makes the NPs most stably dispersed in aqueous solutions with or without the presence of representative biological molecules, such as nucleic acids or proteins…
BACKGROUND: Nanotechnology has the potential to provide agriculture with new tools that may be used in the rapid detection and molecular treatment of diseases and enhancement of plant ability to absorb nutrients, among others. Data on nanoparticle toxicity in plants is largely heterogeneous with a diversity of physico…
One of the distinct biochemical signatures of life is the high chiral preference of biomolecules that compose the organisms, e.g.L-amino acids, D-sugars, L-phospholipids. As a result, many biological and physiological processes are greatly influenced by the chirality of biomolecules. This inspires the introduction of…
The geometrical structures, relative stabilities, and electronic properties of small bare gold clusters Au(n)(lambda) and bimetallic complexes of bare metal clusters with one copper atom Au(n-1)Cu(lambda) (charge lambda = 0, +1, -1; 2 < or = n < or = 9) have been systematically investigated by means of first-principle…
A supramolecular hydrogel 1, prepared at high concentration (5–10 wt%), exhibited mechanical toughness comparable to that of a polymer hydrogel, even though the gel was constructed solely by noncovalent bonding interactions among small molecules. The mechanical toughness and thermal reversibility of gel 1 allowed us t…
Bi(3+)/Ln(3+):YVO(4) nanocrystals with a mean size of 6 nm are prepared through a mixed solvothermal route. With Bi(3+) doping, the excitation band corresponding to the Ln(3+) emission is shifted from 280 nm to 345 nm, owing to the occurrence of Bi(3+) --> V(5+) metal-metal charge transfer and the subsequent energy tr…
A subattomolar HIV-1 DNA detection assay based on multilayer metal-molecule-metal nanojunctions (NJs) has been developed using surface-enhanced Raman spectroscopy (SERS). There is a two-step mechanism involved. First, label free target DNA facilitated the precipitation of Detection Unit I on the substrate through form…
Utilization of industrial and agricultural waste products in the industry has been the focus of research for economical, environmental, and technical reasons. Sugar-cane bagasse is a fibrous waste-product of the sugar refining industry, along with ethanol vapor. This waste-product is already causing serious environmen…
The present study aims at the preparation of silk fibroin solution for possible applications in tissue engineering. Pure silk fibroin protein was extracted from Bombyx mori silk cocoon by degumming method using aqueous Na 2 CO 3 solution followed by solubilizing in LiBr aqueous solution. The fibroin protein solution w…
Inorganic borohydrides are actively studied in view of potential hydrogen storage applications. These compounds can be obtained by a variety of reactions ranging from high temperature reactions of the elements to exchange reactions in solution or in solid state. Different approaches will be discussed and compared.
Various types of metallic orthodontic appliances are used in the management of malocclusion. These appliances are placed in oral environment under many stresses and variations such as masticatory forces, appliance loading, temperature fluctuations, varieties of ingested food and saliva. These metals undergo electroche…
A series of aluminium alkyl complexes {PhC(NR')(NR'')}AlR(2) (4a-n, R' = 2,6-(i)Pr(2)C(6)H(3), 2,6-Me(2)C(6)H(3); R'' = aryl groups with various ortho-, para- or meta-substituents, tert-butyl; R = methyl, ethyl) bearing non-symmetrically N-substituted benzamidinate ligands were synthesized via the reaction of trialkyl…