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。
Spherical silica nanoparticles containing Rhodamine 6G dyes were prepared using an improving Stöber method. The nanocomposites were almost mono-dispersed. Excitation and emission peaks of entrapment of Rhodamine 6G dye molecules in the silica matrix showed no obvious shift compared with that of Rhodamine 6G. The photo…
The promotional effects of soot oxidation with an additional catalyst were studied via varying the oxidation temperature (650 and 1000 °C) at the same temperature ramp. The performance with or without the catalyst was evaluated through temperature-programmed oxidation in thermogravimetric analysis (TGA) mode. The soot…
One of the expected systems on the power transmission aspect of high capacity and lower loss is the high-temperature superconducting (HTS) dc cable system. In an HTS dc cable system, the components with insulation system mainly consist of a superconducting power cable, a cable joint, and termination bushing at cryogen…
Hierarchical α‐MnO2 tube‐on‐tube arrays (HMNTAs) are controllably synthesized by a facile hydrothermal route. HMNTAs are comprised of single‐crystal [001]‐oriented tetragonal nanotubes, where the branch nanotubes are assembled onto a backbone nanotube along a specific crystallographic direction, showing a unique edge‐…
Abstract The purification of phenanthrene is a prerequisite before studying its solid‐solid phase transition at the molecular scale. Two purification methods, namely, zone melting and co‐crystallization with 3,5‐dinitrobenzoic acid, were separately studied and compared, in view of reaching ultrapurity which means a pu…
Abstract Benzil‐based α‐bisimines are implemented as photoswitches for the construction of a speed‐regulating molecular device, in which, by application of light, three different states may be addressed, showing distinct frequencies of internal C–C bond rotation, spanning 12 orders of magnitude. Bond rotation barriers…
For the first time, the thermodynamics are described for the formation of double-stranded DNA (ds-DNA)-single-walled carbon nanotube (SWNT) hybrids. This treatment is applied to the exchange reaction of sodium cholate (SC) molecules on SWNTs and the ds-DNAs d(A)20 -d(T)20 and nuclear factor (NF)-κB decoy. UV/Vis/near-…
The electronic structure of inorganic semiconductor interfaces functionalized with extended π-conjugated organic molecules can be strongly influenced by localized gap states or point defects, often present at low concentrations and hard to identify spectroscopically. At the same time, in transparent conductive oxides…
Photoluminescent carbon dots (c-dots) have recently attracted growing interest as a new member of the carbon-nanomaterial family. Here, we report for the first time that c-dot-decorated TiO2 nanotube arrays (c-dot/TiNTs) exhibit highly enhanced abilities regarding photo/voltage-induced organic pollutant degradation an…
Patterned homeotropic alignment using nanoparticles (NPs) was achieved using inkjet printing. Two types of gold NPs, one smaller and one larger in core diameter (2 and 5 nm) capped with a monolayer of dodecanethiol, and emissive carbon dots with a core diameter of 2.5 nm featuring a mixed ligand shell of carboxylic ac…
We demonstrate a new successful technique for inducing a monodomain in blue phase (BP) liquid crystals (BPLCs). By application of an AC voltage during the cooling or heating of the material into the BP temperature range, a fairly homogeneous BP area was obtained, compared to the case without voltage. We determined tha…
Scalable and low-cost doping of graphene could improve technologies in a wide range of fields such as microelectronics, optoelectronics, and energy storage. While achieving strong p-doping is relatively straightforward, non-electrostatic approaches to n-dope graphene, such as chemical doping, have yielded electron den…
Superhydrophobic coatings based on PDMS and TiO2-NPs/SiO2-NPs were prepared. Due to the photocatalytic property of TiO2-NPs, the PDMS/TiO2-NPs coatings could remove the organic pollutes efficiently, and showed an excellent self-cleaning properties. The superhydrophobicity of the PDMS/TiO2-NPs coatings was still remain…
We studied high-density amorphous ices between 0.004 and 1.6 GPa by isobaric in situ volumetry and by subsequent ex situ x-ray diffraction and differential scanning calorimetry at 1 bar. Our observations indicate two processes, namely, relaxation in the amorphous matrix and crystallization, taking place at well-separa…
A rectangular [28]hexaphyrin bearing outer straps at the long side has been synthesized by SN Ar reaction of [26]hexaphyrin with allyl alcohol, intramolecular olefin metathesis by using Hoveyda-Grubbs second-generation catalyst, and reduction with NaBH4 . The peripheral straps enforce a rectangular conformation for th…
In this research, the revalorization of Posidonia oceanica leaf sea waste was studied and the acid hydrolysis processing times were modulated in order to optimize the extraction of cellulose nanocrystals (CNCs). The obtained ... | Find, read and cite all the research you need on Tech Science Press
To explore the origin of the unusual nonbulk superconductivity with a ${T}_{\mathrm{c}}$ up to 49 K reported in the rare-earth-doped $\mathrm{CaF}{\mathrm{e}}_{2}\mathrm{A}{\mathrm{s}}_{2}$, the chemical composition, magnetization, specific heat, resistivity, and annealing effect are systematically investigated on nom…
Effect of polypyridine derivatives on chromium(VI) oxidation of D-ribose in aqueous media was studied spectrophotometrically. The oxidized product D-erythrose was detected by paper chromatography. The promoters 1,10-phenanthroline, 2,2΄-bipyridine, 2-picolinic acid, and 2,3-dipicolinic acid accelerated the oxidation,…
A series of functionalized carbonaceous adsorbents were prepared by means of reaction with urea and chemical activation of Polish brown coal. In order to obtain nitrogen groups bonded in different ways to the carbon structure, the reaction with urea was performed at two different stages of processing, with precursor o…
Various properties of two polymorphs of carbon, highly oriented pyrolytic graphite (HOPG) and diamond, were investigated at the ab initio level using different Hamiltonians with all-electron Gaussian-type functions (GTF) and projector augmented wave (PAW) basis sets. Their equilibrium lattice parameters, cohesive and…