Materials Literature
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Modified 3,4-ethylenedioxythiophene is employed as the conjugated side chain in conjugated polymers, which can significantly depress the dark current of the polymer photodetectors with little associated decrease in photovoltaic properties, thus enhanceing the detectivities. This approach can be applied to a variety of…
A large-area flexible polymer electrode is fabricated using a new type of polyimide/single-walled carbon nanotube (SWCNT) nanocable composite. SWCNTs serve as the current collector and conductive network, and polyimide nanoparticles anchored on carbon nanotubes act as active materials. The electrode shows superior rat…
We report on a visible-light-absorbing chiral molecular triangle composed of three covalently linked 1,6,7,12-tetra(phenoxy)perylene-3,4:9,10-bis(dicarboximide) (PDI) units. The rigid triangular architecture reduces the electronic coupling between the PDIs, so ultrafast symmetry-breaking charge separation is kinetical…
A diketopyrrolopyrrole-based conjugated polymer, PDPP-4FTVT, which exhibits ambipolar transport behavior in air with hole and electron mobilities up to 3.40 and 5.86 cm(2) V(-1) s(-1), respectively, is synthesized via direct arylation polycondensation. Incorporation of F-atoms in β-positions of thiophene rings dramati…
A core-shell nanovehicle coated with a platelet membrane (PM) is developed for targeted and site-specific delivery of an extracellularly active drug and an intracellular functional small-molecular drug, leading to enhanced antitumor efficacy. This PM-coated nanovehicle can also effectively eliminate the circulating tu…
Low-toxic bismuth-based perovskites are prepared for the possible replacement of lead perovskite in solar cells. The perovskites have a hexagonal crystalline phase and light absorption in the visible region. A power conversion efficiency of over 1% is obtained for a solar cell with Cs3 Bi2 I9 perovskite, and it is con…
Encapsulation of H 4 PVMo 11 O 40 (1-vanado-11-molybdophosphoric acid) inside silica provided a single-site long-lived pervanadyl cation (VO 2 + ) for oxidation reactions. Protective silica residues allowed vanadium to sit in the secondary Keggin structure without being reduced, contrasting the classical situation for…
The introduction of fluorescent moieties in the polymeric chain permits the preparation of luminescent materials with potential applications. In this report, a number of aromatic nanosized polyamides containing both pendant acetoxynaphthamide and acetoxybenzamide were synthesized and characterized. The nanosized polym…
Abstract A novel aromatic diamine monomer, 3,3′‐diisopropyl‐4,4′‐diaminodiphenyl‐3′′,4′′‐difluorophenylmethane (PAFM), was successfully synthesized by coupling of 2‐isopropylaniline and 3,4‐difluorobenzaldehyde. The aromatic diamine was adopted to synthesize a series of fluorinated polyimides by polycondensation with…
In this paper, we report a Schottky ultraviolet photodetector based on poly (3,4-ethylenedioxy-thiophene) poly(styrenesulfonate) (PEDOT:PSS) transparent electrode contacts to Mg 0.1 Zn 0.9 O. The I – V characteristic curves of the device are measured in the dark condition and under the illumination of a 340-nm UV ligh…
Results of the density functional theory studies of the phonon dynamics in the ternary layered cobalt diselenide are reported. The partial phonon densities of states due to vibrations of K, Co, and Se atoms are analysed in detail. They indicate that phonons associated with the dynamics of Co and Se ions within the [Co…
A series of polyamide 1010 (PA1010) composites were prepared by melt technique. A combination of two ball milled nanfillers were used to reinforce the composites i.e. nanodiamond (ND) and graphitized carbon black (GCB). The structure of nanocomposites was characterized by Fourier transform infrared spectroscopy (FTIR)…
A series of polyacrylamide (PAM) organoclay nanocomposites were synthesized by in-situ intercalative polymerization using acrylic amide, sodium hydrogen sulfite, and ammonium peroxydisulfate in the presence of various contents of metakaolinite (MK) modified with potassium acetate (KAc). Both x-ray diffraction data and…
Mucin networks are lubricous biofunctional coats formed through the continuous deposition of mucin glycoproteins. Previously, we demonstrated the synthesis of a mucin mimic using biotinylated-filomicelles crosslinked via streptavidin using a layer-by-layer approach. These networks recreate the fibrous nature of mucin…
Abstract An environmentally friendly approach is presented to synthesize sulfonated reduced graphene oxide (S‐rGO) by usingL‐ascorbic acid (L‐AA) and aryl diazonium salt of sulfanilic acid. The preparation conditions have been optimized in order to obtain isolated and conductive S‐rGO, and the products have been chara…
Application of shear stress has been shown to unidirectionally orient the microstructures of block copolymers and polymer blends. In the present work, we study the phase separation of a novel nanoparticle (NP)-polymer blend thin film system under shear using a soft-shear dynamic zone annealing (DZA-SS) method. The nan…
ABSTRACT The present study deals with the green synthesis of titanium dioxide nanoparticles (nTiO2) using Murraya koenigii leaf extract without any catalyst, template, and surfactant. Colloidal nTiO2 were synthesized by reacting aqueous titanium(IV) isopropoxide with M. koenigii leaf extract under controlled ultrasoun…
Deposition corrosion, via formation of microgalvanic cells from copper ions (e.g., Cu[I], Cu[II]) on iron or galvanized (zinc-coated) steel pipe, has been linked to disastrous field corrosion failures. Key factors expected to control deposition corrosion, including soluble copper concentration, copper ion speciation,…
Determination of electrostatic parameters of a coumarin derivative compound C17H13NO3 by x-ray and density functional theory, Megrouss, Youcef, Benhalima, Nadia, Bahoussi, Rawia, Boukabcha, Nouredine, Chouaih, Abdelkader, Hamzaoui, Fodil
The development and use of engineered nanomaterials is increasing rapidly and there are already a large number of consumer products containing nanomaterials. The possible release of nanomaterials from these products is still uncertain, as is their final fate and effects in the environment. Regulators need to deal with…