Materials Literature
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Diketopyrrolopyrrole (DPP) containing copolymers have gained a lot of interest in organic optoelectronics with great potential in organic photovoltaics. In this work, DPP based statistical copolymers, with slightly different bandgap energies and a varying fraction of donor-acceptor ratio are investigated using monochr…
Upon heating, lithium L-malate undergoes topotactic dehydration to form a phase containing the unsaturated fumarate ligand, in which the original 3-D framework remains intact. Insight into this unusual transformation has been obtained by single crystal X-ray diffraction, MAS-NMR, in situ powder X-ray diffraction and D…
The application of the compact spinning technique with a suction groove could reduce the spinning triangle to a minimum and dramatically decrease the hairiness of ramie yarn. The change range of negative pressure was discussed when the hairiness index was reduced to a minimum for the best gathering effect. The relatio…
The purpose of this investigation was to study the effects of gold (Au) and silver (Ag) nanoparticles on a commonly used enzymatic reaction between horseradish peroxidase (HRP) and the substrate, 3,3',5,5'-tetramethylbenzidine (TMB). Two different methodologies were used in this study. The first was the addition of sm…
The imaging capability of nonideal double negative metamaterial slabs excited by arbitrarily oriented electric or magnetic dipoles is investigated. A dipole oriented parallel to the interface of the slab excites transverse electric and transverse magnetic modes simultaneously, which are transmitted unequally by the sl…
Kynurenic acid (KYNA) may have important therapeutic effects in neurological disorders; however, its use as a neuroprotective agent is restricted due to its very limited ability to cross the blood brain barrier (BBB). For this reason, we are looking for new alternatives for KYNA to reach the brain; one of them is usin…
We cross-linked the polyester chains with 1,1-thiocarbonyldiimidazole to form a reversible addition–fragmentation chain-transfer (RAFT) gel, in which the trithiocarbonate moiety acted as a cross-linker. The “RAFT gel” was then swollen in vinyl monomers and styrene was radically polymerized within the gel, in which the…
CNT concentration range after 1 h of exposure. The toxicity of CNTs was linked to the number of CNT walls. These results were further confirmed by SEM analysis and cell-viability tests that were consistent with the toxicity assays using fluorescent bioconjugates with different types of CNTs. SWCNTs imposed more severe…
A fluorescent macrocyclic anion receptor based on the 2,6-bis(2-anilinoethynyl)pyridine scaffold has been synthesized to investigate the mechanism of fluorescence quenching in this class of compounds. X-ray crystallography reveals that the binding pocket of the receptor is a natural host to both H2O and HCl, accommoda…
Sphene-titanium oxide composite coatings are prepared by a hybrid technique of microarc oxidation (MAO) and heat treatment on titanium. The average roughness of the MAO coating increases after heat treatment due to the crystallization and crystal growth of the MAO coating. The wetting ability, roughness, phase composi…
Hypergols (fuel and oxidizer that ignite on contact) are useful for space propulsion since reaction can be initiated or terminated by opening or closing appropriate valves. Hypergolic liquid propellants are strongly preferred over solid fuels or oxidizers since they show excellent hypergolic ignition and low ignition…
This paper proposes a novel pattern recognition approach based on the radial basis function (RBF) neural network for identifying insulation defects of high-voltage electrical apparatus arising from partial discharge (PD). Pattern recognition of PD is used for identifying defects causing the PD, such as internal discha…
We developed an analytical model to describe hopping conductivity and mobility in organic semiconductors including both energetic disorder and polaronic contributions. The model is based on the Marcus jump rates with a Gaussian energetic disorder, and it is premised upon a generalized Effective Medium approach yet avo…
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Novel 3D frameworks containing D 4h paddle-wheel copper units and 1D zigzag nickel chain have been successfully synthesized and characterized magnetically.
F-doped α- and γ-Fe 2 O 3 nanostructures are grown on Al 2 O 3 (0001) by PE-CVD tailoring fluorine content, nano-organization and optical properties as a function of processing conditions.
Osteoporosis is characterized by a decrease in bone mass and micro architectural deterioration of bone tissue. Current treatments for osteoporosis are generally associated with many limitations, including low oral bioavailability, short half time and long-term side effects. Drug delivery systems are developed to reduc…
A hierarchical flower-like TiO2/MPCNFs web was cost-effectively fabricated by electrospinning, solvothermal treatment and calcination. The flower-like TiO2/MPCNFs as a free-standing anode possessed superior cycling reversibility and rate capability to nano-particulate and micro-particulate TiO2/MPCNFs because of its u…
Electrodeposition of ZnO in a novel electrolyte, namely reverse micelles containing zinc nitrate and dissolved oxygen, has been successfully performed. By simply altering the applied current densities or using different substrates, various morphologies are obtained, from 2D ultrathin nanosheets to 3D hierarchical flow…
We show that resonant tunneling of electromagnetic (EM) fields can occur through a six-layer structure consisting of two pairs of bilayer slabs: one being an epsilon-negative layer and the other being a mu-negative layer with a double-positive (DPS) medium and air. This type of tunneling is accompanied by high-magneti…