Materials Literature
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Many attempts to obtain single crystals appropriate for X-ray diffraction analysis of the Ln(tpp)(acac) derivatives (where Ln = Gd or Sm, tpp = tetraphenylporphyrin and acac = acetylacetonate) have failed so far. A suitable way to get structural parameters for these monoporphyrinates is to use extended X-ray absorptio…
Three Re(I) complexes (3, 5, and 7) (Re(CO)3Cl(L)2) and three new Pt(II) complexes (4, 6, and 8) ([Pt(P(Et)3)2(L)2](OTf)2), where L = pyridine, 1 (4-Py-EDOT) or 2 (4-Py-bithiophene), were prepared and characterized. The solid-state structures of 4 and 5 were determined by X-ray crystallography. Electrochromic polymeri…
The first examples of novel bowl-shaped tribenzotriquinacenes (TBTQs) bearing three dithiametacyclophane units within their arene peripheries are reported. The synthesis is based on a C3v-symmetrical hexakis(chloromethyl)tribenzotriquinacene as the key intermediate and yields the inter-ring metacyclophane-type macrocy…
Abstract Magnetic iron oxide nanoparticles coated with mesoporous silica involving single-site titanium oxide moiety have been first developed by adopting a two-step coating method. The catalytic performance and magnetically separable ability were demonstrated in the oxidation of 2,6-di-tert-butylphenol using hydrogen…
High Resolution Image Download MS PowerPoint Slide Temperature dependence of the electric resistance was measured in the temperature range between 5 and 290 K for the assembly of the boron-doped multiwalled carbon nanotubes (B-doped MWNTs). The observed temperature dependence was explained by the mechanism of three-di…
We analyze a simple model for the copolymerization of two chemically distinct monomers that displays a wide variety of product sequence compositions depending on the rate coefficients for the stepwise addition of each monomer to a growing polymer chain. We show that in certain regions of parameter space the copolymer…
In this work, ab initio density functional calculations were performed to explore the effect of surface lithium vacancies on the initial dehydrogenation kinetics of lithium borohydride. We found that some B−H bonds in neighboring BH 4 -1 complexes around the vacancy became elongated (weakened). The activation barriers…
The objective of the present study is to develop the reaction mechanism and kinetics of photoreduction of NO by CO. For this purpose, the reactions were conducted in the presence of Pd-ion-substituted nano-TiO 2, Ti 1 - x Pd x O 2 - δ, which was synthesized via a solution combustion method. The photocatalytic activity…
Abstract Assembled complexes, Fe(NCX)2(bpp)2 (X = S, Se, BH3; bpp = 1,3-bis(4-pyridyl)propane), have been synthesized. Fe(NCS)2(bpp)2 had a novel 2D interpenetrated structure and showed a temperature-independent HS state, while Fe(NCSe)2(bpp)2 and Fe(NCBH3)2(bpp)2 exhibited a slight decrease in χMT and a complete spin…
We show that the electrical and mechanical properties of the metal electrodes to the side walls of carbon nanotubes or graphene sheets can be dramatically improved through incorporation of (−CON−) and (−COO−) bifunctional molecular anchors. Thus for Pt, the (−CON−) anchor has a contact resistance 60 times lower than t…
The effect of an external salt (AcONa) on the kinetics of adsorption and structure formation inside the adsorption layers (ALs) of chitosan (Ch) and dodecyl chitosan (C12Ch) as well as on the frequency dependence of the complex dilational elasticity modulus of these layers has been studied. The complex dilational elas…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTConductivity Shift of Polyethylenedioxythiophenes in Aqueous Solutions from Side-Chain Charge PerturbationEmril Mohamed Ali, Eric Assen B. Kantchev, Hsiao-hua Yu, and Jackie Y. YingView Author Information Institute of Bioengineering…
The syntheses, structures, and magnetic properties of the complexes [MnIV4MnIII10MnII2O2(OCH3)12(tmp)8(O2CCH3)10].3Et2O (1.3Et2O), [MnIV2MnIII18MnII2O6(OCH3)14(O2CCH3)16(tmp)8(HIm)2].2CH3OH (2.2CH3OH), and [MnIV2MnIII18MnII2O6(OCH3)14(O2CCH3)16(Br-mp)8(HIm)2].2C6H14.5CH3OH (3.2C6H14.5CH3OH) are reported. The unusual w…
We demonstrate the unique ability of catanionic vesicles, formed by mixing single-tailed cationic and anionic surfactants, to capture ionic solutes with remarkable efficiency. In an initial study (Wang, X.; Danoff, E. J.; Sinkov, N. A.; Lee, J.-H.; Raghavan, S. R.; English, D. S. Langmuir 2006, 22, 6461) with vesicles…
Spatially separated ZnO nanopillars were grown on Pt-thin-film-coated Si substrates by electrochemical deposition in Zn(NO 3 ) 2 aqueous solution. The effects of growth parameters, such as Zn(NO 3 ) 2 concentration, cathodic potential, bath temperature, and growth time, were studied with respect to the morphological,…
Here we present a simple but general method for constructing complex binary colloidal crystals with an almost full range of size ratios, which is referred to as "template-assisted electric-field-induced assembly (TAEFIA)". The dependence of the structures of binary colloidal crystals on size ratio (gamma) and volume f…
Ultra-small-angle X-ray scattering was performed on suspensions of anisotropic polystyrene particles of varying degrees of anisotropy. The wave vector dependence of particle form factors is well described by a model developed by Debye for the scattering from fused spheres. As volume fraction is raised, all suspensions…
To understand the spinning process of dragline silk by spiders, the protein conformation before spinning has to be determined. Raman confocal spectromicroscopy has been used to study the conformation of the proteins in situ in the intact abdominal major ampullate gland of Nephila clavipes and Araneus diadematus spider…
Green emission of ZnO microcrystallites has been studied in detail by directly investigating the luminescence from the different crystal surfaces of ZnO microcrystallites by means of room temperature cathodoluminescence (CL). The relative strength of the green emission was found to be strongly dependent on the crystal…
The aquatic colonial stalked diatom, Didymosphenia geminata, has acquired notoriety in recent years because of huge increases in many rivers of temperate regions. However, in some streams in northern England it has probably or, in the case of the R. Coquet (Northumberland), certainly been abundant for many decades. Th…