Materials Literature
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The first two families of polyoxometalate-based single-molecule magnets (SMMs) are reported here. Compounds of the general formula [Ln(W(5)O(18))(2)](9-) (Ln(III) = Tb, Dy, Ho, and Er) and [Ln(SiW(11)O(39))(2)](13-) (Ln(III) = Tb, Dy, Ho, Er, Tm, and Yb) have been magnetically characterized with static and dynamic mea…
Heterometallic 3d-4f complexes are of high interest in molecular magnetism: the lanthanide ions bring large and, in most cases, anisotropic magnetic moments. The combination of 3d and 4f metal ions, which differ through their chemistries and stereochemical preferences, leads to a rich variety of heterometal complexes,…
Abstract Micropatterns of cells on a poly(vinyl chloride) (PVC) film surface were created by using ion irradiation. A PVC film was irradiated with H + ions through a pattern mask in order to create patterns of the hydrophilic/hydrophobic regions on the PVC surface. The effect of ion irradiation on the surface properti…
Abstract Polytetrafluoroethylene (PTFE) films were successfully coated with tin oxide in aqueous solutions. Tin oxide was crystallized in the solution and formed nanocrystal coatings on the polymer films. The coatings consisted of SnO 2 and SnO crystals. They were assemblies of tin oxide nanosheet of about 10 to 50 nm…
We investigate the surface state of Bi$_2$Te$_3$ using angle resolved photoemission spectroscopy (ARPES) and transport measurements. By scanning over the entire Brillouin zone (BZ), we demonstrate that the surface state consists of a single non-degenerate Dirac cone centered at the $Γ$ point. Furthermore, with appropr…
Differential scanning calorimetry (DSC) is a thermal analysis technique that measures the energy absorbed or released by a sample as a function of temperature or time. Analysis by DSC has wide applications for examining solid state reactions and solid–liquid reactions in many different materials. Analysis of the kinet…
We have investigated the texture and shell microstructure together with the individual hardness distribution patterns of recent calcitic brachiopods of the species Kakanuiella chathamensis, Liothyrella uva and Liothyrella neozelanica. One of the most distinctive features of the studied species is the number of layers…
We report that the major features in the temperature dependence of dc and ac magnetization of a well-known spin-chain compound, Ca3Co2O6, which has been known to exhibit two complex magnetic transitions due to geometrical frustration (one near 24 K and the other near 10 K), are found to be qualitatively unaffected in…
Dados sobre a composição mineralógica dos solos das serras litorâneas do sul de Santa Catarina são escassos. Este trabalho objetivou caracterizar, do ponto de vista morfológico, físico e químico, perfis de solo representativos desta região, bem como identificar os componentes mineralógicos desses solos e suas relações…
Dynamic intracellular analysis has important applications in areas like biomedical research, defense and security and many others. Although, there are several methods for intracellular analysis, surface enhanced Raman scattering (SERS) is becoming a preferred transduction method for such applications, due to its narro…
We present a methodology to extract the single-crystal phonon dispersion from polycrystalline materials. The approach consists of recording inelastic x-ray scattering (IXS) spectra over a large momentum transfer region (typically $2--80\text{ }{\text{nm}}^{\ensuremath{-}1}$), and confront them with a model calculation…
Crystalline nanodimensional particulates of ceria have been obtained in the form of conformal thin films at the interface of two immiscible liquids. For the first time, interfacial deposition has been accomplished by the use of a simple phase transfer process eliminating the need to synthesize metal precursors. The ob…
Although neat gold−thiolate oligomers and polymers made of linear S−Au−S bonds have been well-known, observation of RS−Au−SR linear complexes (RS− being an alkylthiolate group) on Au(111) has been reported only recently. On the basis of the unique geometry and bonding of the RS−Au−SR complex on Au(111), we construct s…
Resonance enhanced multiphoton ionization spectra of vanadium monoxide (VO) have been measured in the 16,000-23,300 cm(-1) region. A series of intense peaks, identified as the VO C (4)Sigma(-) (v('))-X (4)Sigma(-) (v(")=0) progression, has been recorded up to v(')=7 and vibrational and rotational parameters have been…
We report unexpectedly strong variations in the quasielastic scattering (QES) intensity in glasses under pressure. Analysis of the data reveals strong correlations between pressure-induced changes in the QES intensity and the intensity of the boson peak. This observation emphasizes a direct relationship between these…
Metalation of meso-free 5,10,20,25-tetrakis(pentafluorophenyl)-substituted [26]hexaphyrin(1.1.1.1.1.1) (4) with Cu(II) and Zn(II) ions afforded homodinuclear complexes 6 and 7, respectively. A demetalation-remetalation protocol provided monozinc(II) complex 9 selectively, from which copper(II)-zinc(II) heterodinuclear…
Reproducible alignment and complete inclusion of ordered mesoporous structures into anodic aluminum oxide (AAO) is still a challenging nanofabrication process. Hierarchical nanostructures of ordered mesoporous silica (OMS) in AAO channels were prepared directly on conducting substrates by electrophoretic deposition of…
This paper presents the application of process analytical technology (PAT) tools in combination with solid state analytical (SSA) techniques for the detection of solvent-mediated pseudopolymorphic transformations and the discovery of a new hydrate form of the model system, sodium benzoate in water. Cooling crystalliza…
We review our recent studies on glassy dynamics and glass transition of polymer thin films using neutron and X-ray reflectivity and inelastic neutron techniques. In the last decade extensive studies have been performed on polymer thin films to reveal very interesting but unusual properties such as reduction in the gla…
An amphiphilic diblock codendrimer composed of a third generation poly(methallyl dichloride) end-capped by eight hydroxyl groups (PMDC(OH)(8)) and a second generation poly(urethane amide) end-capped by four alkyl groups (PUA(C16)(4)) were found to self-assemble into highly oriented ribbons at the water-air interface.…