Materials Literature
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Consider a weighted undirected graph and its corresponding Laplacian matrix, possibly augmented with additional diagonal elements corresponding to self-loops. The Kron reduction of this graph is again a graph whose Laplacian matrix is obtained by the Schur complement of the original Laplacian matrix with respect to a…
BACKGROUND: Immediate hypersensitivity reactions (IHR) to iodinated contrast media (ICM) have traditionally been considered nonallergic; however, the increasingly frequent reporting of positive skin test and basophil activation test results suggests a specific allergic mechanism in some patients. Skin tests have been…
Biodegradable sodium alginate-g-poly (vinyl caprolactam) synthesized by graft copolymerization of N-vinyl caprolactam (VCL) on to sodium alginate (NaAlg) via free radical initiation mechanism using a redox initiation system. Grafting (%), efficiency (%), and conversion (%) were all found to depend on the content of po…
ZnS–TiO2 hetero-nanostructured photocatalysts were synthesized by the impregnation of ZnS quantum dots (QDs) on the surface of TiO2 nanofibers. Samples were characterized by X-ray diffraction (XRD), field emission gun scanning electron microscopy (FEG-SEM), X-ray photoelectron spectroscopy (XPS) and UV-visible diffuse…
Extracellular matrices derived from animal tissues for human tissue repairs are processed by various methods of physical, chemical, or enzymatic decellularization, viral inactivation, and terminal sterilization. The mechanisms of action in tissue repair vary among bioscaffolds and are suggested to be associated with p…
Organic solar cells (OSCs) have gained serious attention during the last decade and are now considered as one of the future photovoltaic technologies for low-cost power production. The first dream of attaining 10% of power coefficient efficiency has now become a reality thanks to the development of new materials and a…
The development of conjugated materials bearing electron-rich and electron-poor units along their backbone introduces new possibilities to control functionality for organic electronic applications through charge transfer character in ground and excited states. A thorough understanding of intramolecular dipoles and the…
A new type of device is presented that allows direct measurement of spin selectivity in charge transfer processes occurring in adsorbed molecules. The new device provides direct information about the nature of the charge being transferred (electrons or holes) and on spin selectivity, if it exists. Here the device is a…
A template-free strategy is exploited to bottom-up synthesize yolk-shell vanadium oxide through a two-step spontaneous assembly of hydrolytically formed subunits in a one-pot process. The unique structured vanadium pentoxide exhibits excellent cathode performance for lithium ion batteries.
Mesoporous hydrogenated TiO2 microspheres were synthesized via a simple hydrogenation treatment process, and showed twice the rate capability compared to that of mesoporous TiO2 microspheres at 20 C due to the combination of the short lithium ion diffusion path and the high electronic conductivity of the mesoporous hy…
This review outlines key principles and recent advances in the use of dynamic electrochemistry with polymeric liquid membranes. Ideally polarizable membranes are most attractive in fundamental studies of ion transfer and when the accumulation of the ion in the receiving phase is of key interest, for example in strippi…
This work is focussed on establishing the effect of the nanostructure of a series of ordered mesoporous carbon (OMC) support materials, after Pt loading, on the oxygen reduction reaction (ORR) performance, for application in proton exchange membrane fuel cells (PEMFCs). Hexagonal mesoporous silica (HMS) templates were…
Multimodal porous CNT@TiO2 core–sheath coaxial nanocables have been constructed by a sol–gel method and post-calcination in the presence of polymer nanotubes acting as a template and carbon source. The composite exhibits excellent electrochemical properties, attaining a high discharge capacity of 231 mA h g−1 at 1000…
Good response, in particular high sensitivity, of polyvinylidene fluoride (PVDF) attracts a lot of research works on its manufacturing process and applications. Polarization is an important factor that is influential to the performance of PVDF. In this article, a new polarization method using ITO (Indium Tin Oxide) gl…
Electron-rich cycloparaphenyleneacetylenes as well as their twin "glasses-like" conjugates form stable complexes with fullerenes.
Perpendicular arrangement of two nitro groups of adjacent molecules was found in 104 structural fragments deposited in the Cambridge Structural Database. In the most cases, this non-hydrogen bonding ONO2⋯π(N)NO2 interaction is shorter than 3 Å. Ab initio calculations of the interaction energy indicates the attractive…
Graphene sheets have been considered as acceptors and transporters of photoinduced electrons generated from illuminated photocatalysts. Herein, we utilize these electrons with the help of graphene sheets in photocatalytic selective reduction. First, graphene-modified TiO2 hybrids are prepared by electrostatic assembly…
Nanoparticles of the TiO2/ZnO composite photocatalysts were prepared via sol‐gel process. The crystalline structure, morphology, thermal stability, and pore structure properties of the composite photocatalysts were characterized by XRD, FE‐SEM, TG‐DTA, and N2 physical adsorption measurements. The photocatalytic activi…
Benzo[4,5]thieno[2,3-b]pyridine (BTP) was newly developed as an electron deficient moiety for high triplet energy materials and two BTP derivatives with the BTP and carbazole groups were synthesized as high triplet energy bipolar host materials. The BTP derivatives were effective as the host materials for green and bl…
Organic photovoltaics (OPVs) are a topic of extensive research because of their potential application in solar cells. Recent work has led to the development of a coarse-grained model for studying poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) blends using molecular simulations. Her…