Materials Literature
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We present the one-dimensional polymeric structures of [Cu(SePh)]∞1 and [Cu(SeMe)]∞2 that were solved by using powder X-ray diffraction data. Using a field-effect transistor (FET) set-up, the hole mobility of complex 1 was found to be 4 × 10−2 cm2 V−1 s−1, comparable to that of regioregular poly(3-hexylthiophene) (P3H…
By means of molecular dynamics simulations, we study the structure and the dynamics of a microscopic model for colloidal gels at low volume fractions. The presence of directional interactions leads to the formation of a persistent interconnected network at temperatures where phase separation does not occur. We find th…
Full control in size distribution and surface chemistry of Si nanocrystals (NCs) allows the high efficiency of visible light emission. The NC synthesis and subsequent surface modification with organic monolayers are performed in a single step by laser chemical method. Interestingly, it is found that the distinct emiss…
Two linear cobalt chloride ferromagnetic chains, trans-[CoCl2(3,5-X2py)2] [X = Cl (1), Br (2)], have been prepared and the influence of the halogen bonding on the interchain magnetic interactions has been investigated.
White-light long-lasting phosphor Sr 2 Al 2 SiO 7 : Ce 3 + , Dy 3 + was prepared by a high temperature solid-state reaction. The energy transfer between Ce 3 + and Dy 3 + was systematically investigated. Through co-doped Ce 3 + and Dy 3 + , the duration of the persistent luminescence of Sr 1.975 Al 2 SiO 7 : Ce 0.005…
Thermoresponsive shape memory polymers are stimuli-responsive materials whose shape is modulated by heat. They have been investigated as smart materials in a variety of biomedical, industrial and aerospace applications. The vast majority of shape memory polymers have been limited to those prepared from organic polymer…
Anode-supported solid oxide fuel cells ͑SOFCs͒ based on Ni-yttria-stabilized zirconia ͑YSZ͒ anodes, YSZ electrolytes, and lanthanum strontium manganite ͑LSM͒-YSZ cathodes were studied with respect to durability in humid air ͑ϳ4%͒ typically over 1500 h.Operating temperature and current density were varied between 750 a…
PURPOSE: Two points are particularly relevant for the clinical use of magnetic nanoparticle hyperthermia: the optimisation of both the exposure conditions and the magnetic nanoparticle characteristics, and the assessment of the limits of scalability of the treatment. To answer these two points a criterion for the indi…
Historically the extraction of high-quality crystallographic information from inorganic samples having high hydrogen contents, such as metal hydrides, has involved preparing deuterated samples prior to study using neutron powder diffraction. We demonstrate, through direct comparison of the crystal structure refinement…
The normal and anion structures of salicylaldehyde azine (SAA) in solvents of different viscosities and polarities have been studied by means of femto- to nanosecond time-resolved emission techniques. In the normal form, an excited-state intramolecular proton-transfer (ESIPT) reaction takes place with a time constant…
Guidebook for Design of ASME Section VIII Pressure Vessels provides you with a review of the background issues, reference materials, technology, and techniques necessary for the safe, reliable, cost-efficient function of pressure vessels in the petrochemical, paper, power, and other industries. Solved examples through…
A new technology for energy dispersive Xray spectroscopy (EDX) in the scanning/ transmission electron microscope (S/TEM) is described that allows orders-of-magnitude improvement in key analytical metrics, such as sensitivity and time-to-data. This technology incorporates a four SDD detector system highly optimized for…
In this communication, we demonstrate the successful incorporation of phosphate into Ba(2)In(2)O(5), which leads to the conversion from an orthorhombic to a cubic unit cell. The resulting increased oxygen vacancy disorder leads to an enhancement in the oxide ion conductivity at low temperatures. In addition, in wet at…
Six new dinuclear Mn(II) compounds with carboxylate bridges have been synthesized and characterized by X-ray diffraction: [{Mn(phen)(2)}(2)(μ-RC(6)H(4)COO)(2)](ClO(4))(2) with R = 2-Cl (1), 2-CH(3) (2), 3-Cl (3), 3-CH(3) (4), 4-Cl (5) and 4-CH(3) (6). Compounds 1 and 2 show two μ(1,3)-carboxylate bridges in a syn-anti…
Physical or covalent adsorption of surface-active block or random copolymers consisting of anchoring units and functional units onto solid surfaces yields polymeric self-assembled monolayers (PSAMs) with designed chemical and morphological structures and functionalities. This tutorial review provides an overview of PS…
Four bis-phenolate complexes [Zn(II)L], [Ni(II)L], [Cu(II)L] and [Co(II)L] (where [H(2)L = 2,2'-[2,2']bipyridinyl-6-yl-bis-4,6-di-tert-butylphenol] have been synthesized. The copper(II) and nickel(II) complexes have been characterized by X-ray diffraction, showing a metal ion within a square planar geometry, slightly…
The microstructure and surface features of carbon nanowall (CNW) thin films has been investigated by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). It is found that CNWs have a surface chemical state comprising a mixture of sp2 and a few sp3 bonds. Some oxygen atoms are chemically a…
Phosphorylation is an important mechanism of protein modification. In the Gram-positive soil bacterium Bacillus subtilis, about 5% of all proteins are subject to phosphorylation, and a significant portion of these proteins is phosphorylated on serine or threonine residues. We were interested in the regulation of the b…
We report synthesis of new single-source heterometallic precursors [NaLn(TFA)(4)(diglyme)] (Ln = Y, Er, Tm, Yb; TFA = trifluoroacetate), which decompose in 1-octadecene at significantly low temperature, without using any surfactant or capping reagent, to give sub-50 nm particles of cubic and/or hexagonal NaYF(4) : Yb(…
We report the synthesis of new mesoporous nanostructured polysilsesquioxanes by hydrolysis–polycondensation procedures of silylated amine or ammonium precursors. The formation of materials with defined architectures and pore arrangements on a mesoscopic length scale was achieved via soft-templating approaches using an…