Materials Literature
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A bi-phosphonate ligand tetraethyl-(2,3,5,6-tetramethyl-1,4-phenylene) bis(methylene)diphosphonate has been designed and synthesized. The bi-phosphonate as a bridging ligand reacts with lanthanide nitrates forming four different types of 1D coordination complexes: ribbon polymer (type I), semi-ribbon polymer (type II)…
The aim of this study is to evaluate the soft tissue response of the pure and Au-embedded PPg-PEG. PP-g-PEG2000, PP-g-PEG4000, Au-PP-g-PEG2000, and AuPP-g-PEG4000 were obtained via chlorination of polypropylene and polyethylene glycol in the presence of a base with a "grafting onto" technique. Solvent cast films of th…
1Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA 2Xylos Corporation, Langhorne, PA 19047, USA 3Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China 4RainDance Technologies Inc., Lexington, MA 0…
The origin of magnetism induced by vacancies on BaTiO(3)(001) surfaces is investigated systematically by first-principles calculations within density-functional theory. The calculated results show that O vacancy is responsible for the magnetism of the BaO-terminated surface and the magnetism of the TiO(2)-terminated s…
A macrocyclic host, a pair of zinc porphyrins bridged by two anion-acceptable indolocarbazole moieties, has shown strong positive homotropic allosterism upon anionic guest bindings with an inhibitory control mechanism by DABCO addition.
Chitosan nanoparticles (CNP) were prepared by ionic gelation using sodium tripolyphosphate. Metal-enhanced CNP were prepared using the same procedure in the presence of Cu 2+ and Ag+, respectively. The nanoparticulate materials were characterised by FTIR, SEM and antimicrobial assays. The CNP showed higher antimicrobi…
Discontinuous fiber reinforced thermoplastic materials are being used in many engineering applications. To widen their structural and antivibration application, there is a need to understand damping performance and its associated mechanisms. In this work, unreinforced, 20% short glass fiber reinforced and 20% long gla…
Conventional low molecular weight gadolinium based Magnetic Resonance Imaging (MRI) contrast agents such as Magnevist® are very useful for imaging tissues. However, at the high magnetic fields used in modern MRI equipments, their relaxivity (contrasting efficiency) is rather poor. The grafting of the gadolinium comple…
Oxidation chemistry with supported Au nanoparticles as catalysts is an area of intense research. Even so there is still much discussion as to the nature of Au species generated on the complex surfaces of these catalysts and the types of oxygen species that are present. Recent experimental work has highlighted Au bi-la…
Site-selective immobilization of dyes and different protein recognizing entities at the surface of zeolite L crystals using mild radical nitroxide exchange reactions is reported. Exposure of these crystals to aqueous protein solutions leads to site-selective immobilization of proteins onto the crystals.
The pitting corrosion of Al-Cu thin film alloys was investigated using samples that were heat treated in air to form through-thickness Al 2 Cu particles within an Al-0.5% Cu matrix. Time-of-Flight Secondary Ion Mass Spectroscopy (ToF-SIMS) analysis revealed Cu-rich regions 250–800 nm in lateral extent near the metal/o…
The present article describes ruthenium nitrosyl complexes with the {RuNO}(6) and {RuNO}(7) notations in the selective molecular frameworks of [Ru(II)([9]aneS(3))(bpy)(NO(+))](3+) (4(3+)), [Ru(II)([9]aneS(3))(pap) (NO(+))](3+) (8(3+)) and [Ru(II)([9]aneS(3))(bpy)(NO˙)](2+) (4(2+)), [Ru(II)([9]aneS(3))(pap)(NO˙)](2+) (…
Eu 2+ -Yb 2+ codoped SrSi 2 O 2 N 2 phosphors were prepared and their photoluminescence properties were investigated in comparison with the single Eu 2+ -doped and the single Yb 2+ -doped samples. Their photoluminescence properties were investigated as the factors of Yb 2+ ion concentration, excitation wavelength, and…
Sulfate-reducing bacteria (SRB) is a kind of the major microorganisms which could cause corrosion. Recently, SRB have been given more attention and many research progress have also been obtained. This article has reviewed progress in research on the corrosive effect of biofilm generated by SRB. Simultaneously, some co…
The first Keggin-type heteropolyanion, [PW(11)O(39)Ir(H(2)O)](4-) (1), was synthesized by hydrothermal reaction from two different polytungstate precursors and [IrF(6)](2-). It was isolated as (Bu(4)N)(4)[PW(11)O(39)Ir(H(2)O)] (1a), which was completely characterized by multinuclear (31)P and (183)W NMR, ESI-mass spec…
Lanthanide(III) chelates of DOTA-tetraamide ligands have been an area of particular interest since the discovery that water exchange kinetics are dramatically affected by the switch from acetate to amide side-chain donors. More recently these chelates have attracted interest as potential PARACEST agents for use in MRI…
As anti-reflecting thin films and transparent electrodes of solar cells, indium tin oxide (ITO) thin films were prepared on glass substrates by DC magnetron sputtering process. The main sputtering conditions were sputtering power, substrate temperature and work pressure. The influence of the above sputtering condition…
Purpose: In this study, heat capacity and thermal conductivity of nanocomposites formed by high density polyethylene (HDPE) matrix and expanded graphite (EG) conductive filling material were investigated. Design/methodology/approach: Nanocomposites containing up to 20 weight percent of expanded graphite filler materia…
The investigation consisted of utilizing boron compounds (BCs) as a synergist with ammonium polyphosphate (APP) in manufacturing flame retardant wood-polymer composites (WPCs). Flame retardants (FRs) at various ratios (APP, boric acid (BA), borax (BX), zinc borate and BA/BX mixtures) were used to determine the physica…
Refractory metal silicides and nitride-based ceramics combine two properties that may lead to substantial reductions in aircraft fuel consumption: compared to the most advanced nickel-based superalloys presently used in aeronautical turbines, they can withstand higher temperatures and may have lower densities. Niobium…