Materials Literature
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Oligothiophene-bridged zinc-tin bisporphyrinates were synthesized. Their absorption spectra have been analyzed in terms of exciton interaction and porphyrin-bridge coupling by through-bond interaction and the steady-state fluorescence spectra in terms of differential Stokes shifts for the electron-donating zinc and th…
We introduce a simple and robust method for varying the phase of the patterns in transfer printing of polyelectrolyte multilayers. Simply transferred positive patterns, edge-defined intermediate patterns, and negatively engraved patterns were obtained by manipulating the capillarity of the plasticized polymeric layer…
We successfully developed a method to control the introduction of Pd nanoparticles selectively into the poly(2-vinylpyridine) (P2VP) microdomains of polyisoprene- block -poly(2-vinylpyridine) (PI- b -P2VP) diblock copolymer. The technique consists of three steps: (i) cross-linking of P2VP microdomains with diiodobutan…
Investigation of one anhydrous and four hydrated forms of a pharmaceutical compound ( 1 ) using both single-crystal and high-resolution powder X-ray diffraction methods revealed a two-dimensional framework which, upon exposure to moisture, absorbed water between the layers, causing the lattice to expand by as much as…
Abstract Composite polyacrylate latex particles were prepared through a simple method by dissolving organosilicon monomer methyltrimethoxysilane in a monomer mixture of acrylic monomers methyl methacrylate (MMA), n ‐butyl acrylate ( n ‐BA), and acrylic acid (AA). With the addition of water needed for hydrolysis, methy…
A facile one-pot microemulsion method has been developed for the synthesis of spherical silver core-silica shell (Ag@SiO2) nanoparticles with europium chelates doped in the shell through a silane agent. The method is significantly more straightforward than other extant methods. Measurements of the luminescent emission…
Abstract A novel epoxy resin modifier, phosphorus‐containing epoxide siloxane (DPS) with cyclic phosphorus groups in the SiO network, was prepared from the reaction of 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO) with polyhedral‐oligomeric siloxanes, which was synthesized by the sol–gel reaction of 3‐gly…
Abstract Let 𝒯 be an aperiodic and repetitive tiling of ℝ d with finite local complexity. We present a spectral sequence that converges to the K -theory of 𝒯 with page-2 given by a new cohomology that will be called PV in reference to the Pimsner–Voiculescu exact sequence. It is a generalization of the Serre spectral…
Abstract Blocked mercaptosilane possessing two functionally active end groups can chemically react with both silica and rubber leading to significant improvement in silica‐filled vulcanizate products. The effect of the novel blocked mercaptosilane (3‐propionylthio‐1‐propyltrimethoxylsilane) (called hereafter PXT) on t…
Abstract The effect of pristine silica nanoparticles on the dynamic and capillary rheology of a model LDPE‐EVA thermoplastic elastomeric system is explored in this paper. The pristine silica nanoparticles were melt‐blended with the LDPE‐EVA system at 1.5, 3, and 5 wt% loadings, respectively, by varying the sequence of…
Abstract In this work we investigate the room‐temperature Raman spectra of several rare‐earth [RE(HCOO) 3 ; RE = La, Pr, Nd, Gd, Tb and Y] formates. Polarized measurements were carried out for La(HCOO) 3 yielding the observation of most of the Raman‐active phonons predicted by group theory analysis. The respective ass…
Water soluble cubic ZnS nanoparticles (NPs) have been synthesized at room temperature by using 3-mercaptopropionic acid (MPA) as a modifier molecule and characterized by X-ray diffraction (XRD), steady-state absorption, and emission spectroscopy. Electron transfer (ET) dynamics have been carried out in ZnS semiconduct…
Abstract The structural arrangement of molecules, ions, and other molecular species in the confined spaces of nanoscale pores and mineral interlayer are a key factor in understanding transport and reactivity in many technological and biological systems. In this respect, considerable research efforts have been focused…
Abstract In this study, the potential of recycled poly(ethylene terepthalate) (rPET) as a well‐defined reinforcing material for the in situ microfibrillar‐reinforced composite (iMFC) was investigated in comparison with that of liquid crystalline polymer (LCP). Each dispersed phase (LCP or rPET) was melt blended with h…
Hollow polyphosphazene microcapsules have been fabricated by the covalent layer-by-layer assembly of polydichlorophosphazene (PDCP) and hexamethylenediamine (HDA) on aminosilanized silica particles, followed by core removal in a HF/NH(4) F solution. The hollow and intact microcapsules in both wet and dry states have b…
Abstract Fiber‐reinforced elastomeric isolator (FREI) is a new generation of seismic isolation device in which steel plates are replaced by fiber reinforcement. The essential characteristic of the elastomeric isolator is a very large ratio of the vertical to horizontal stiffness. This is somehow provided in FREI by re…
Abstract The corrosion products formed on hot‐dip galvanized steel sheets for the automobile application with adhesion of alkaline mud containing different Cl − ion contents are investigated by means of Raman and infrared (IR) spectroscopy. Results show that the Cl − ion content in alkaline mud has great influence on…
The impact of several new technologies on the development of a manufacturing process for LY518674 is described. Extensive use of process analytical technology (PAT) throughout development, both at laboratory and pilot-plant scale, enabled data-rich experiments, shortened development cycle times, and obviated the requi…
Abstract The present work reports the study of the effect of different chemical functionalization methods on the interfacial characteristics of the polymer composites formed. The chemically modified carbon nanofibers were blended with polypropylene (PP) and PP modified with maleic anhydride on a mini twin‐screw extrud…
Nearly all metals and their alloys are subject to corrosion that causes them to lose their structural integrity or other critical functionality. It is essential to detect corrosion when it occurs, and preferably at its early stage, so that action can be taken to avoid structural damage or loss of function. Protective…