Materials Literature
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The H(2)O(2)-mediated oxidation of silver nanoparticles (AgNPs) over a range of pH (3.0-14.0) is investigated here, and an electron charging-discharging model capable of describing the experimental results obtained is developed. AgNPs initially react with H(2)O(2) to form Ag(+) and superoxide, with these products subs…
The increasing demand for graphene has required a new route for its mass production without causing extreme damages. Here we demonstrate a simple and cost-effective intercalation based exfoliation method for preparing high quality graphene flakes, which form a stable dispersion in organic solvents without any function…
Poly(lactide) (PLA)-graphene oxide (GO) nanocomposites were prepared by blending commercial poly(l-lactide) (PLLA) with GO-g-PDLA, where GO-g-PDLA was synthesized via ring-opening polymerization using modified GO as the initiator. Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC)…
Visible light-harvesting C(60)-bodipy dyads were devised as universal organic triplet photosensitizers for triplet-triplet annihilation (TTA) upconversion. The antennas in the dyad were used to harvest the excitation energy, and then the singlet excited state of C(60) will be populated via the intramolecular energy tr…
The conductivity of Ca-doped BiFeO 3 ceramics varies by many orders of magnitude, depending on the oxygen partial pressure during processing. Bi 1– x Ca x FeO 3–( x /2)+δ ceramics are mixed oxide ion/electron conductors at 800 °C, but the electron conduction can be suppressed; when sintered and cooled in N 2 from 800…
Ordered mesoporous tricompound NiO–CaO–Al 2 O 3 composite oxides with various Ca content were first designed and facilely synthesized via a one-pot, evaporation-induced, self-assembly (EISA) strategy. The obtained mesoporous materials with advantageous textural properties and superior thermal stabilities were investig…
A simple method is presented for synthesizing large single crystal graphene domains on melted copper using atmospheric pressure chemical vapor deposition (CVD). This is achieved by performing the reaction above the melting point of copper (1090 °C) and using a molybdenum or tungsten support to prevent balling of the c…
A family of donor–acceptor–donor (D–A–D) type near-infrared (NIR) fluorophores containing rigid nonplanar conjugated tetraphenylethene (TPE) moieties was designed and synthesized through Stille coupling reactions with electron-deficient [1,2,5]thiadiazolo[3,4-g]quinoxaline (QTD) or benzo[1,2-c;4,5-c′]bis[1,2,5]thiadia…
A ternary blend of entirely biodegradable polymers, namely polylactide (PLA), poly(3-hydroxybutyrate-co-hydroxyvalerate) (PHBV), and poly(butylene succinate) (PBS), was first melt-compounded in an effort to prepare novel fully biodegradable materials with an excellent balance of properties. The miscibility, morphology…
Diatoms of Europe: Diatoms of the European Inland Waters and Comparable habitats, Vol 6. Eunotia and some related genera (2011) by Horst Lange-Bertalot, Małgorzata Ba¸k & Andrzej Witkowski. Edited ...
High Mobility in a Stable Transparent Perovskite Oxide, Kim, Hyung Joon, Kim, Useong, Kim, Kim, Tai Hoon, Mun, Hyo Sik, Jeon, Byung-Gu, Hong, Kwang Taek, Lee, Woong-Jhae, Ju, Chanjong, Kim, Kee Hoon, Char, Kookrin
Atomically precise, inherently charged Au(25) clusters are an exciting prospect for promoting catalytically challenging reactions, and we have studied the interaction between CO(2) and Au(25). Experimental results indicate a reversible Au(25)-CO(2) interaction that produced spectroscopic and electrochemical changes si…
ZnO nanoparticles have been synthesized by precipitation method from Zinc nitrate. The powder was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected-area electron diffraction, UV-vis optical absorption, and photoluminescence spectroscopy analyses. XRD patterns…
It is very important for realizing the polarization-multiplex holographic memory to clarify the optical properties of vector holograms recorded using the inhomogeneous polarized beams. In the present paper we present a simple yet useful method using the radially polarized writing beams to systematically investigate th…
By analysis of diffuse-reflectance infrared Fourier transform spectroscopy results obtained from core/shell particles, the entrapment of bergamot oil (BO) and benzoyl peroxide (BPO) was compared in different silica and organosilica shells obtained from oil-in-water microemulsions (see spectra). The results point to a…
Abstract The temperature distribution of glass fiber-reinforced epoxy flat plates coated with a thin oxy-acetylene flame-sprayed aluminum-12silicon coating was determined experimentally. The composite plates were fabricated by filament winding. Following winding, but prior to and during curing, garnet sand was uniform…
Shear flow orientation of nematic liquid crystals (LCs) has been investigated for two side-chain polymethacrylates having the same methoxyazobenzene mesogens but different spacers of either four (PM4MA) or six (PM6MA) methylene groups. These two polymer nematic LCs exhibited orientation behaviors distinct from each ot…
We demonstrate that waste heat from integrated circuits especially computer microprocessors can be recycled as valuable electricity to power up a portion of the circuitry or other important accessories such as on-chip cooling modules, etc. This gives a positive spin to a negative effect of ever increasing heat dissipa…
The unusual synthesis of the dimeric dithiolene complex [(PPh 3 )Pd(ethylene-1,2-dithiolate)] 2 (1), containing the simplest dithiolene ligand, has been achieved through the reaction between tetrathiafulvalene (TTF) and Pd(PPh 3 ) 4 . The complex shows a folded structure in the solid state, according to single crystal…
Micro-beam x-ray absorption fine structure spectroscopy was used to investigate rutile TiO2 nanoparticles internalized into gastrointestinal cells during their crossing of a gut model barrier. Nanoparticles diluted in culture medium tend to accumulate in cells after 48 h exposure; however, no spectral differences aris…