Materials Literature
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Hydrogen peroxide formation is achieved with remarkable productivity at ambient conditions (25 degrees C and atmospheric pressure) in aqueous medium using a heterogeneous catalytic system; formic acid is decomposed in the presence of a continuous flow of O(2) over Pd/gamma-Al(2)O(3) catalyst leading to the generation…
Making alloys of Mg and Li is quite a task as their individual melting temperatures are vastly different. However, it is thought paid off considering their extreme lightness. Basically, low melting temperature Li could cause Mg-Li alloys’ microstructures change at room temperature (R.T.). Recrystallization and aging o…
A functionalized ethylenedioxythiophene (EDOT) derivative bearing a highly nucleophilic thiolate group has been synthesized. The efficiency of this new building block as a precursor to a wide range of EDOT-based monomers is demonstrated by reaction with different electrophilic species or by oxidation to a disulfide di…
Ring expansions or contractions of metalloporphyrins are unusual reactions. In this review, the author will show how the step by step analysis of two serendipitous reactions allows one to unveil their mechanism and to point out the key role of nickel ion in these rearrangements.
The catalytic dehydrogenation of LiBH(4) doped with exceptionally low quantities of carbon-supported Pt nanoparticles can be improved significantly, and smaller Pt nanoparticles result in greater enhanced catalytic dehydrogenation of LiBH(4) than do larger Pt nanoparticles.
Ag nanoparticles (NPs) formed in situ by the photochemical reduction of phosphotungstic acid (H3PW12O40, PTA) under UV-irradiation in polyelectrolyte multilayer nanoreactors composed of poly(ethyleneimine)–silver ions (PEI–Ag+) and PTA fabricated on solid substrates by alternating adsorption, wherein the PTA plays the…
Nano-crystalline MWO4 (M = Ca, Sr and Ba) were successfully produced using cyclic microwave radiation in propylene glycol. XRD, TEM, SAED and EDX analyses revealed the presence of nano-crystalline MWO4 containing the corresponding alkaline earth metals, W and O. Their lattice parameters and crystallite sizes were dete…
Here we describe peptide amphiphiles (PAs) which can be self-assembled into nanofiber networks using divalent ions. These networks possess several key properties of extracellular matrix (ECM) including cell-adhesive ligands, enzyme-mediated degradation and self-assembly into hierarchical organization. The self-assembl…
Crystal growth behaviors in CuO-doped Li2O-2SiO2 glasses by continuous-wave (cw) Ytterbium doped fiber laser (wavelength: 1080 nm) irradiations are examined. The lines (width: ~5 μm) consisting of highly oriented nonlinear optical lithium disilicate (Li2Si2O5) crystals are patterned in various laser powers (1.2-2.4 W)…
Two new Mn(III) complexes with unprecedented topologies containing the tert-butylphosphonate ligand (t-BuPO3(2-)), [Mn9O6(t-BuPO3)2(O2CMe)11 (MeCOOH)(H2O)].8H2O(1), and [NBu(n)4][Mn13O6(t-BuPO3)10(OH)2(N3)6(MeCOOH)2(H2O)2].6H2O(2) have been prepared by treatment of Mn(O2CMe)2 and NBu(n)4MnO4 with tert-butylphosphonic…
A new mixed-metal compound, [Co(phen3)]2[Cu11I15] (phen = 1,10-phenanthroline), containing the two novel copper(I) iodide anionic clusters [Cu10I15]5− and [Cu12I15]3−, has been synthesized solvothermally and structurally characterized by single crystal X-ray diffraction. The synthesis and structures of the two cluster…
We attempted to fabricate and evaluate a NO x decomposition electrochemical reactor with an additional NO x adsorption layer on a multilayer catalytic cathode and investigated a cell operating method to achieve low-temperature operation. To clarify the capability of a NO x adsorption layer, we carried out the NO x dec…
Cu seed layers for future interconnects must have conformal step coverage, smooth surface morphology, and strong adhesion. Conformal deposition had been achieved by chemical vapor deposition (CVD), but CVD Cu films have rough surfaces and poor adhesion. In this paper, conformal, smooth, adherent, continuous, and thin…
A series of cellulose/soy protein isolate (SPI) membranes was prepared from cellulose and SPI solution by casting and coagulation from 5 wt% acetic acid and 5 wt% sulphuric acid aqueous solution, respectively. The structure and properties of the membranes were characterized by Fourier transform infrared spectroscopy,…
Abstract Mesoporous silica (MS) spheres with size‐controllable pore channels and regular spherical shape were used as supports for the encapsulation of hydrophilic perfume. The MS spheres were tailored by expanding pore size in order to have high loading content. The perfume‐encapsulating MS spheres so obtained were f…
Salicylate-based poly(anhydride-esters) were synthesized via two different methods, melt-condensation and solution polymerization, and the resulting polymers were compared. Acetylsalicylic acid was used as a model compound to mimic the active polymer chain-ends during melt-condensation, and formed a low-molecular-weig…
The thermal and photochemical ring-opening of spiro(3H-naphtho[2,1-b]pyran-3,9'-thioxanthene-10,10-dioxide) results in the facile ring-contraction to 9-(naphtho[2,1-b]furan-2-yl)-9H-thioxanthene-10,10-dioxide . Similar behaviour is displayed by the isomeric spiro(2H-naphtho[1,2-b]pyran-2,9'-thioxanthene-10,10-dioxide)…
We characterize the equilibrium states for the two-phase Stefan problem with surface tension and with or without kinetic undercooling, and we analyze their stability in terms of dependence on physical and geometric quantities.
The coprecipitation process, using either mixed nitrate or sulfate solutions, to produce Al-doped has been studied in detail. Using X-ray diffraction (XRD) and thermal gravimetric analysis (TGA), it has been determined that charge-compensating or ions accompany the incorporated ions into the structure to form layered…
Phase II of the Protein Structure Initiative, funded by the NIH NIGMS (National Institute of General Medical Sciences), is a 5-year effort to determine thousands of protein structures. The New York SGX Research Center for Structural Genomics (NYSGXRC) is one of the four large-scale production centers tasked with deter…