Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
ABA block copolymers composed of highly methylated polyrotaxane and hydrophobic anchoring terminal segments containing 2-methacryloyloxyethyl phosphorylcholine (MPC) and n-butyl methacrylate (PMB) (OMe-PRX-PMB) were synthesized as a platform of molecularly dynamic biomaterials. A contact angle measurement indicated th…
Crystalline solids self-assembled from anionic and cationic porphyrins provide a new class of multifunctional optoelectronic micro- and nanomaterials. A 1 : 1 combination of zinc(II) tetra(4-sulfonatophenyl)porphyrin (ZnTPPS) and tin(IV) tetra(N-methyl-4-pyridiniumyl)porphyrin (SnTNMePyP) gives porphyrin nanosheets wi…
Novel magnetic, pH and redox sensitive microcontainers have been prepared using a sacrificial template-directed synthesis procedure, followed by chemical deposition of magnetic nanocrystals via co-precipitation. The fabricated magnetic microcontainers exert operative pH responsiveness, gradual and controlled collapse,…
Ferroelectricity and piezoelectricity are two of the common ferroelectric material properties, which have widespread observations in many biological systems, and these are referred to as biopiezoelectricity and bioferroelectricity. This paper presents a short overview of the main issues of piezoelectricity and ferroel…
The kinetics of growth for chiral J-aggregates of H(4)TPPS(4) porphyrin have been investigated under different experimental conditions in the presence of tartaric acid. The observed rate constants and the anisotropy factor g show a defined dependence on the enantiomer used as a chiral templating agent.
We report here the application of a medicinally important plant Amaranthus spinosus for the synthesis of gold nanoparticles (AuNPs). Different concentrations of ethanolic leaf extract of the plant were reacted with aqueous solution of HAuCl 4 4H 2 O under mild reaction conditions. Synthesis of AuNPs was confirmed from…
Multifunctional magnetic/upconversion luminescent mesoparticles, consisting of a Fe(3)O(4) nanoparticle core and a LaF(3):Yb(3+), Er(3+) nanocrystal shell, have been developed using a facile co-precipitation approach. Owing to their excellent superparamagnetic properties, superior T(2)-enhanced magnetic resonance effe…
We demonstrate the synthesis of 2D metal nanoparticles (MNPs)/graphene nanocomposites using small cationic surfactants as stabilizers. 2D sandwich-like MNPs/graphene nanocomposites with a uniform distribution of MNPs can be achieved via a one-pot in situ growth and reduction protocol.
A novel inorganic-organic hybrid film structure based on polyoxometalate and conventional organic dye has been fabricated, whose fluorescence can be reversibly switched using the electrochromic component to activate or suppress the related fluorescence quenching mechanism upon applying reduction or oxidation potential…
High quality triethanolamine-coated Fe3O4 nanocrystals can be prepared by a novel complex-coprecipitation route based on the use of triethanolamine as ligands to the iron precursors. These nanocrystals show high saturation magnetizations and excellent Cr(VI) removal performances.
Graphene oxide/polypropylene (GO/PP) nanocomposites were fabricated by varying the concentration of GO in the presence of octyltriethoxysilane (OTES) using an internal batch mixer to enhance the anti-scratch properties of pristine PP. Mechanical properties, including hardness, elastic modulus, and fracture toughness,…
In this study, we demonstrate a realization of a favorable modification of band structures and an apparent increase in the density of state effective mass in β-Zn4Sb3 compound by introduction of a slight amount of Ge at the Zn site, in a manner of adding a shape peak below the valence band edge and giving rise to a si…
This paper reports self-assembled microstructures of CuO particles synthesized from Cu(CH3COO)2–NaOH aqueous systems. The assembled CuO particles are composed of CuO primary single crystal nanoparticles, which are bounded by three {100} planes. The morphology of these CuO primary crystals is determined by the surface…
Macromonomeric azoinitiators are very special multi-functional polymer molecules which combine the properties of various essential reactants typically used in polymerization reactions in just a single molecule such as polymerizable double bonds and thermolabile azo groups. The reactive groups are typically separated b…
The increase in wettability of a low surface energy solid surface has become an important task for different applications, and this can be improved by the help of surfactant solutions. On the other hand, reduction of surfactant consumption without compromising the wettability may be of great importance from an environ…
Plate-like Pt nanoframes were synthesized using Au nanoplates as a template, followed by formation of a Ag layer coating on the Au template, and selective chemical etching of Au and Ag leaving the Pt structure intact. Circular, triangular, and hexagonal Au nanoplates successfully served as templates for fabrication of…
Absorption spectra of several free base triarylcorroles were investigated by MCD spectroscopy. The MCD spectra exhibit unusual sign-reverse (positive-to-negative intensities in ascending energy) features in the Soret- and Q-type band regions, suggesting a rare ΔHOMO < ΔLUMO relationship between π and π* MOs in the cor…
We have created periodic lattices of close-packed non-toroidal focal conic domains (FCD) in smectic A liquid crystal films deposited on solid substrates that induce unidirectional planar anchoring, at the interface with air which induces homeotropic anchoring. Each cell of the quasi-hexagonal lattice contained a FCD w…
There are very important characteristics of partial substitution of the cations at both A and B sites in ABO3 perovskite structure. In this report, SrFeO(3−δ) (SFO) photocatalyst powder was synthesized by a high temperature solid state reaction method. The morphology and crystalline structure of the obtained samples w…
Silver nanoparticles were synthesized by chemical reduction method. The Ag nanoparticles (AgNP) were characterized using UV-Vis spectroscopy which shows an absorption band at 420 nm confirming the formation of nanoparticles. For any practical application of the silver nanoparticles it is necessary to stabilize it whic…