Materials Literature
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The reversible proton dissociation and geminate recombination of a photoacid was studied in peptide-based hydrogels over a large concentration range of the self-assembled peptide nanotube (PNT) network. 8-Hydroxypyrene-1,3,6-trisulfonate trisodium salt (HPTS) was used as the photoacid. We found that the proton transfe…
The highly ordered anodic aluminum oxide (AAO) template was prepared with two-step anodization. The AAOtemplate was carried out wet etching process using a mixture of phosphoric acid and chromic acid, NaOH, and H3PO4solutions. The relationship between mass loss of AAO template and etching time was studied. The results…
Abstract The effect of nanoclay loading on the alteration of tensile and dynamic mechanical properties of aramid short fibre‐filled styrene butadiene rubber composites was investigated. In all the composites, 20 phr of N330 black was used. Dynamic mechanical thermal analysis was used to investigate the viscoelastic da…
A series of hexadentate ditopic receptors incorporating benzimidazole moieties have been designed, which are fitted with phosphonic acid or phosphoethylester coordinating units. In addition, poly(oxyethylene) pendants have been introduced on the benzimidazole backbone of two ligands to increase water solubility. The l…
Electrochemical reduction of a solid TiO 2 −ZrO 2 mixture (molar ratio = 1:1) to the TiZr alloys in a consolidated porous structure was studied by constant cell voltage electrolysis in molten CaCl 2 at 900 °C. For the first time, and surprisingly, it was found that tuning the α- and β-phases in the TiZr alloys could b…
The diatomic free radical nitric oxide (NO) plays a crucial role in many physiological functions including vasodilation, angiogenesis, and neurotransmission, as well as some immune responses. NO-mediated processes allude to the possibility that chemical systems capable of generating NO may provide useful therapeutic a…
We show that the high-molecular weight (HMW) protein aggregate of fish otolith matrix is involved in the regulation of crystal polymorphs during otolith biomineralization. Teleost fish otoliths are biominerals that contain calcium carbonate aragonite or vaterite crystals. In a previous study, we identified a novel pro…
This study presents an optically controllable fiber-optic attenuator consisting of side-polished fiber (SPF) with a photoresponsive liquid crystal (LC) overlay operating in the telecommunication wavelength. Attenuation is controlled by a photochemical-induced phase transition of photoresponsive LC, which modulates the…
Abstract Single‐walled carbon nanotubes (SWNTs) are a promising material for future nanotechnology. However, their applications are still limited in success because of the co‐existence of metallic SWNTs and semiconducting SWNTs produced samples. Here, electrochemical etching, which shows both diameter and electrical s…
Dissipative particle dynamics simulations of a mesoscale model are performed to investigate the concentration dependence of surfactant adsorption on small-diameter carbon nanotubes and their bundles. Adsorption is found to follow fundamentally different mechanisms in the two cases because of the heterogeneity of the b…
Novel flower-like vanadium carbide (V8C7) hierarchical nanocrystals have been successfully synthesized in a large-scale hydrothermal process using a mixture of diethanolamine (HN(C2H4OH)2, DEA) and V2O5 powder. The products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FES…
Abstract Blends were made from linear low‐density polyethylene (LLDPE) and various amounts of soya powder. The soya powder content was varied from 5 to 20 wt%. Polyethylene‐ g ‐(maleic anhydride) (PE‐ g ‐MA) was used as a compatibilizer. Tensile strength and elongation at break (EB) decreased with increasing soya powd…
Finite-size effects become significant in nanoscale materials. When a nanocrystal is surrounded by a host matrix of a different nature, the perfection of the crystal structure is distorted by the interface formed between the nanocrystal and the matrix. The larger the surface-to-volume ratio of the nanocrystal, the hig…
By using 13 C solid-state NMR, monitoring the reactivity of methoxy species with carbon monoxide has been performed on 12-tungstophosphoric acid, H 3 PW 12 O 40, at 423−473 K. Surface methoxy species have been selectively prepared from methanol at 293−423 K. Almost quantitative conversion of surface methoxy species in…
We present a dissipative particle dynamics simulation study on the formation of nanostructures of symmetric diblock copolymers confined between planar surfaces with and without nanopatterns. The nanopatterned surface is mimicked by alternating portions of the surface that interact differently with the diblock copolyme…
Abstract The synthesis, structure, magnetic and electrochemical properties of the heterobridged μ‐phenoxido–μ 1,1 ‐azide dinickel(II) compound [Ni II 2 (HL 1 ) 3 (μ 1,1 ‐N 3 )] · 3H 2 O ( 1 ) derived from the tetradentate Schiff base ligand N ‐(2‐hydroxyethyl)‐3‐methoxysalicylaldimine (H 2 L 1 ) are described. The tit…
Abstract Almost all sutures in current usage only play one role, i.e. to mechanically tie wound tissues together. Drug‐loaded composite nanofibers obtained through coaxial electrospinning can initiate the development of a new type of biodegradable sutures with drug release. In this work, electrospun poly( L ‐lactic ac…
The complex dielectric functions of Si-nanocrystals (nc-Si) with different sizes embedded in SiO2 matrix synthesized by SiOx/SiO2 superlattice approach is obtained by spectroscopic ellipsometry. The Maxwell–Garnett effective medium approximation and the Lorentz oscillator model are employed in the spectra fitting. The…
Die Basenstärke entscheidet: Die Bildung eines Charge-Transfer-Komplexes wird durch eine Kombination aus Coulomb-Anziehung und Charge-Transfer-Wechselwirkungen bestimmt. Der Charge-Transfer-Komplex, der aus einem supramolekularen Amphiphil erhalten wurde (siehe Bild), ist wasserlöslich und bildet ultralange Nanofasern…
Using a density-functional scheme, we investigate the electronic, structural, and vibrational properties of amorphous silicon nitride. Through a Car-Parrinello molecular-dynamics simulation, we generate a model structure formed mainly by a network of ${\text{SiN}}_{4}$ tetrahedra a large fraction of which are edge sha…