Materials Literature
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Graphitized nanodiamonds were conveniently prepared by the laser irradiation of colloidal solution using various solvents. The nanodiamonds were converted into a fully graphitized onion-like structure, which became a cage-like mesoporous structure by the degradation of graphitic layers. Alcohols, acetone, and acetonit…
We report the formation and characterization of hybrid pn-junction solar cells based on a layer of copper diffused silver indium disulfide (AgInS2@Cu) nanoparticles and another layer of copper phthalocyanine (CuPc) molecules. With copper diffusion in the nanocrystals, their optical absorption and hence the activity of…
Tungsten disulphide inorganic nanotubes (INT-WS2) were used to prepare advanced biodegradable polymer nanocomposites. The biopolymer matrix employed, poly(3-hydroxybutyrate) (PHB), is one of the most extensively researched and utilized biodegradable and renewable thermoplastic polyesters. Results from differential sca…
ABSTRACT In this investigation, the porous structure of polyaniline/MgO (PANI/MgO) composites has been successfully synthesized by in‐situ oxidative polymerization method. The as‐prepared materials were characterized by Ultraviolet–visible absorption spectroscopy, Fourier transform infrared spectroscopy, X‐ray diffrac…
We report the preparation, characterization and responsive behavior of polystyrene-block-poly(acrylic acid) (PS-b-PAA) copolymer brushes grafted from silica substrates using Surface-Initiated Atom Transfer Radical Polymerization (SI-ATRP). pH-dependent swelling behavior was investigated in situ by ellipsometry and it…
Activated platelets play a pivotal role in cardiovascular diseases such as atherothrombosis. Therefore, strategies enabling activated platelet molecular imaging are of great interest. Herein, a chemical protocol was investigated for coating superparamagnetic iron oxide nanoparticles with low molecular weight fucoidan,…
The regenerated Araneus ventricosus spider dragline silk protein fibrous scaffold with moderate strength and flexibility was fabricated by electrospinning and post treatment with 90 vol % acetone. The effect of collection method on the morphology of regenerated spider silk protein (RSSP) fibrous scaffold, the effects…
Lu 2 O 3:Tb,Hf ceramics prepared at 1700 °C were found as an efficient storage phosphor with the main TL band around 250 °C composed of three overlapping components. Their respective trap depths are of 1.37, 1.35, and 0.86 eV. The latest, although rather shallow, gave TL at the highest temperature (around 300 °C) due…
KYP2O7 powders doped with Eu3+ were obtained for the first time by a one-step urea-assisted combustion method. Detailed structural properties were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) and X-ray fluorescence (EDX). Spectroscopic properties like excitation, emi…
Single crystals of (NH4)14[Hf9O8(OH)6(SO4)14]·nH2O (1) were obtained by heating a sealed aqueous solution of HfOCl2·8H2O, (NH4)2SO4 and H2SO4 at 80 °C for 10 days. The discrete [Hf9O8(OH)6(SO4)14](14-) anionic clusters have no inter-cluster connectivity. This rare nonameric architecture has only been observed previous…
Porous, hollow metal carbonate microstructures show many unique properties, and are attractive for various applications. Herein, we report the first demonstration of a general strategy to synthesize hollow metal carbonate structures, including porous MnCO3 hollow cubics, porous CoCO3 hollow rhombuses and porous CaCO3…
Over the last 30 years, the single-crystal photocrystallographic technique has been developed to determine the three-dimensional crystal and molecular structures of metastable species which have been generated in the crystal photochemically. Transition-metal complexes that have been investigated using this methodology…
Chitin nanofibers are structural components of the insect cuticle, the exoskeleton of crabs, and mollusk shells. Chitin nanofibers have found broad use in biomedical applications. Here, we study structure-properties-processing relationships of 3 nm chitin nanofiber networks self-assembled from a chitin hexafluoroisopr…
In this work, the possibility of synthesizing stable tetragonal zirconia nanopowders via polyacrylamide gel method was investigated. In addition, the effects of the sulfation process on the stabilization of metastable tetragonal structure and tetragonal to monoclinic phase transformation were studied. Zirconium oxychl…
Short carbon‐fiber (C sf ) reinforced alumina ceramics with MgO–Y 2 O 3 as additives were fabricated by pressureless sintering at 1500 °C for 2 h. The mechanical, dielectric and microwave properties of the composites in the X band (8.2–12.4 GHz) were evaluated. The flexure strength and HRA of the ceramic increased wit…
Abstract Poly(ethylene terephthalate) (PET) resin is one of the most widely used thermoplastics, especially in packaging. Due to thermal and hydrolytic degradations, recycled PET (RPET) exhibits poor mechanical properties and lacks moldability. The effects of adding chain extender (CE) and nanoclay to RPET were invest…
Three families of scheelite CaWO4-based red luminescent phosphors, Ca1−1.5xWO4:xEu3+ (0.02 ≤ x ≤ 0.09), Ca0.925−ySryWO4:0.05Eu3+ (0 ≤ y ≤ 0.9) and Ca0.625Sr0.30W1−zMozO4:0.05Eu3+ (0 ≤ z ≤ 0.7) were hydrothermally prepared and characterized. The substitutions of Sr2+ for Ca2+ and Mo6+ for W6+, which improve local symme…
The present study focuses on the effects of nanoscale porosity on inflammatory response in vitro and in vivo. Nanoporous alumina membranes with different pore sizes, 20 and 200 nm in diameter, were used. We first evaluated cell/alumina interactions in vitro by observing adhesion, proliferation, and activation of a mur…
Absorption current is an important characteristic of polymers with regard to their time-domain response to a direct current (DC) poling field. This is because the results of absorption current measurements can be used to gain understanding of the relationship between space charge accumulation and movement. In semicrys…
Single-crystalline organic nanowires (NWs) are important building blocks for future low-cost and efficient nano-optoelectronic devices due to their extraordinary properties. However, it remains a critical challenge to achieve large-scale organic NW array assembly and device integration. Herein, we demonstrate a feasib…