Materials Literature
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This work details the characterization of anatase nanoTiO 2 particles synthesized from Malaysian mineral precursors using the XRD and EDXRF. The properties that were analyzed were its crystallite sizes, relative crystallinity, phases, and chemical composition. It was determined that the crystallite size was quite smal…
Hydrochlorothiazide (HCT) is one of the most commonly prescribed antihypertensive drugs. In an attempt to gain an insight into the physicochemical and molecular aspects controlling the complex architecture of native β-cyclodextrin (β-CD) with HCT, we performed multiple-temperature-pH isothermal titration calorimetric…
Mn(2+) doped and Ce(3+)-Mn(2+) co-doped α-Sr(2)P(2)O(7) phosphors were prepared by a traditional high-temperature solid-state reaction route. The UV-vis excitation and emission spectra for all samples were investigated. Luminescence of Mn(2+) is assigned to from two different sites, which is similar to that of Ce(3+).…
A photochromic liquid crystalline (LC) polymer {4-butoxy-2′-(4-hex-5-enyloxy)-4′-(4-hex-5-enyl-oxybenzyloxy)azobenzene, abbreviated as PLCP} was newly synthesized via the acrylic diene metathesis polymerization (H. J. Choi, et al., J. Mater. Chem., 2009, 19, 7124). Utilizing the combined techniques of differential sca…
To improve the accuracy of the static contact angle measurement in the silicone rubber aging experiments, a high accurate contact angle algorithm in combination with the circle fitting algorithm and ellipse fitting algorithm is proposed. The influence of the water drop volume and noise on the calculation accuracies of…
Classical molecular dynamics simulations were used to investigate the interaction of methyl, ethyl, and n-propyl alcohols and thiols with the hydroxylated basal surfaces of aluminum hydroxide and iron oxyhydroxide, as well as a model graphite surface. Comparisons were made to concurrently run desorption experiments in…
Two versions of a facile and efficient synthetic approach to 3,5-bis(acetaldehyde) substituted BODIPY have been developed and this compound has been used to obtain, in high yields, a variety of 3,5-divinyl BODIPY derivatives (vinylacetates, enamines, vinyl chlorides, and some multiple-functionalized products). As show…
A series of 17,17-dialkyl-3,14-diaryltetrabenzofluorenes were efficiently prepared by using Suzuki-Miyaura cross-coupling reactions of the corresponding 3,14-dibromo derivatives. Studies of the unique fluorescence properties of these compounds showed that they display intense blue to yellow fluorescence with high quan…
Bicudoa amazonica C.E. Wetzel, Lange-Bertalot & Ector gen. nov. et sp. nov. is described using light and scanning electron microscopy. It differs from ‘araphid’ genera by a unique combination of characters such as the absence of a raphe system, helictoglossae, rimoportulae, apical pore fields and linking spines, w…
Abstract The mathematical treatment of polymer modification systems, described by population balances containing convolution is discussed. The two‐dimensional case (molecular weight vs. number of branch points) was considered by utilizing approximations of distributions, expanding them in terms of Gaussian basis funct…
Electrochemically active nanostructured polypyrrole (PPy) coated with polyaniline (PANi) was deposited on an electrode followed by gluteraldehyde (GA) attachment for grafting 5′-amine modified single strand DNA (ssDNA) to form PPy–PANi–GA–ssDNA and DNA hybridization in phosphate buffered solution. Differential pulse v…
Aiming at the development of a controlled redox responsive polymeric micelle system, a series of redox-sensitive ABA triblock degradable copolymers with different amounts of disulfide bonds were synthesized. These multi-disulfide-containing amphiphilic copolymers are able to self-assemble in aqueous solution to form s…
Single-phase orthorhombic DyMnO 3 and GdMnO 3 nanoparticles in the size range 60–70 and 35–45 nm, respectively, were synthesized using a modified hydrothermal method. The magnetic property measurements of DyMnO 3 nanocrystals show anomalies around ∼43 K (antiferromagnetic (AFM) coupling between Mn 3+ spins) and at 7 K…
Optimization of mechanical properties is required in applications of tissue-engineered scaffolds. In this study, a polyelectrolyte complexation approach is proposed to improve the mechanical properties of the nanofibrous scaffolds. Through an electrospun chitosan/gelatin (CG) model system, it is demonstrated that the…
Analytical formulas derived here are capable of predicting the measurement error of the parameters of the standard unidirectional impulse waveforms due to the distortion induced by the limited bandwidth of the measuring system. The parameters subject to analysis are the rise time and the peak value. The standard wavef…
Abstract The copolymerization of pyrrole with 3,4‐ethylenedioxythiophene (EDOT) is successfully achieved in boron trifluoride diethyl etherate via direct anodic oxidation of the monomer mixtures on indium‐tin oxide working electrodes. The resultant copolymers are characterized by electrochemical methods, FT‐IR, XPS, S…
We apply a complete uncertainty analysis, not studied in the literature, to investigate the dependences of retrieved electromagnetic properties of two MM slabs (the first one with only split-ring resonators (SRRs) and the second with SRRs and a continuous wire) with single-band and dual-band resonating properties on t…
Abstract Polymer epitaxy defines the crystallographic orientation of overgrowing polymer. It controls several aspects of the structure of semicrystalline polymers, such as fixed mutual chain orientation, certain crystal structures of polymorphic polymers, and the spatial arrangement of planar backbone molecular chains…
Effects of the Sm0.2Ce0.8O2-δ Modification of a Ni-Based Anode on the H2S Tolerance for Intermediate Temperature Solid Oxide Fuel Cells, Yun, Jeong Woo, Ham, Hyung Chul, Kim, Hee Su, Song, Shin Ae, Nam, Suk Woo, Yoon, Sung Pil
We report giant fluorescence enhancement in SiC nanocrystals (NCs) embedded in a sodium dodecyl sulfonate dielectric medium by proximately contacted Ag nanoparticles. The enhancement in integrated fluorescence intensity reaches an astonishing 176-fold under 360 nm excitation (53.3-fold enhancement in emission maximum…