Materials Literature
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We study sequential tunneling of magnetic excitations in nonitinerant systems through triangular molecular magnets. It is known that the quantum state of these molecular magnets can be controlled by application of an electric or a magnetic field. Here, we use this fact to control the flow of a pure magnetization curre…
The radical copolymerization of N‐substituted maleimides containing polymethylene and poly(ethylene oxide) side chains as the N‐substituent groups with isobutene, styrene, and α‐methylstyrene as the electron‐donating monomers is carried out in order to investigate the structure and thermal properties of the resulting…
Here we report on the synthesis, characterization, and photophysics of multichromophoric arrays based on a triptycene scaffold that acts as a bridging ligand for Ir(III) and Os(II) satellite active components. The triptycene scaffold not only furnishes a rigid star-shaped 3D displacement of the metallic units in space…
Magnetization of DyFe${}_{4}$Ge${}_{2}$ measured as function of temperature in a 1 kOe magnetic field indicates antiferromagnetic (AFM) ordering at ${T}_{\mathrm{N}}$ $=$ 62 K followed by two spin reorientation transitions at ${T}_{f}$${}_{1}$ $=$ 52 and ${T}_{f}$${}_{2}$ $=$ 32 K and one unusual anomaly at 15 K (${T}…
The o-hydroxycinnamic derivatives represent efficient caged compounds that can realize quantification of delivery upon uncaging, but there has been lack of time-resolved and mechanistic studies. We used time-resolved infrared (TRIR) spectroscopy to investigate the photochemical uncaging dynamics of the prototype o-hyd…
We observed the high-speed anisotropic motion of an individual gold nanoparticle in 3D at the picometer scale using a high-energy electron probe. Diffracted electron tracking (DET) using the electron back-scattered diffraction (EBSD) patterns of labeled nanoparticles under wet-SEM allowed us to super-accurately measur…
The interface effects on the ferroelectric polarization and stability of PbTiO3 (PTO) films with metallic (Pt) or oxide (LaNiO3, SrRuO3) electrodes were studied using density functional theory calculation. It was found that the PTO film with oxide electrodes has stronger electrode/ferroelectric interface adhesion, low…
We describe a systematic study of triplet sensitization in a poly(phenyleneethynylene) conjugated polyelectrolyte (CPE) in methanol solution by using a series of three cationic iridium complexes with varying triplet energy. The cationic iridium complexes bind to the anionic CPE by ion-pairing, leading to singlet state…
New C60 and C70 fullerene dyads formed with 4-amino-1,8-naphthalimide chromophores have been prepared by the Bingel cyclopropanation reaction. The resulting monoadducts were investigated with respect to their fluorescence properties (quantum yields and lifetimes) to unravel the role of the charge-transfer naphthalimid…
Mechanochemistry is of greater interest at present because of its application in the transformation of waste. In this study, an innovative application is proposed, namely to mechanochemically treat blast furnace slag so that it can be recycled into a low-cost adsorbent. In particular, the way this industrial waste ads…
We have studied the stability of thiolated Au38 nanoparticles (NPs) via density functional theory based calculations varying the coverage from 0 up to 32 molecules. Three different initial core arrangements were considered for the cluster, spherical, tubular, and bi-icosahedral, while thiol groups were attached to the…
Hybrid composites with hierarchical structure, simultaneously reinforced by microscale glass fibers and CNTs, are fabricated using resin transfer molding. Processing/structure/property relationships of the resulting hybrid multiscale composites are studied. Loading of the CNTs with surfactant are crucial for structure…
Analog memristors that exhibit an electronic conductivity change in response to ionic motion have been simulated using the finite element method. Several physical mechanisms are considered for the redistribution of dopants within the device and all result in minimal resistance changes. The mechanisms considered that r…
Photoluminescence (PL) properties of bismuth (Bi) doped porous silica thin films annealed at various temperatures and in different atmospheres were studied. The near infrared (NIR) luminescence depended strongly on the annealing atmosphere and temperature. To reveal the origin of the NIR luminescence, we performed com…
This work presents the systematic studies of bulk hybrid heterojunction solar cells based on Cu(In, Ga)Se2 (CIGS) nanocrystals (NCs) embedded in poly(3-hexylthiophene) matrix. The CIGS NCs of approximately 17 nm in diameter were homogeneously blended with P3HT layer to form an active layer of a photovoltaic device. Th…
Wheat straws were split longitudinally using a specially designed straw splitter. Oriented structural boards made from the split straw strands were fabricated with polymeric diphenylmethane diisocyanate (pMDI) resin. The effects of the split straw strand length, resin content, and panel density on the properties of or…
Abstract Two new pyridine-anchoring “push–pull” dyes I and II with a triphenylamine donor and different acceptors have been synthesized for p-type dye-sensitized solar cells (DSSCs), in which an overall conversion efficiency with dye II reached 0.14% under standard global AM 1.5 solar conditions.
A new method for fabric defect detection is proposed. It is based on the filter group containing four annular Gaussian band-pass filters and aimed at detecting defects in fabrics with plain and twill structures. A fabric sample image is processed by using this filter group and the filtered images are obtained. These f…
Abstract We investigated the chemical reactivities of (La0.7Sr0.2Ba0.1)ScO3−δ (LSBS) and LaScO3 powders and Pt foil as functions of reaction temperature, T, oxygen partial pressure, P(O2), and reaction time, t. The LSBS powder showed a maximal Pt content of ca. 33 mg (ca. 3 wt %) under the conditions T = 1573 K, P(O2)…
Purpose The purpose of this paper is to study the effect of gravity on the general model of the equations of generalized magneto‐thermo‐microstretch for a homogeneous isotropic elastic half‐space solid whose surface is subjected to a mode‐I crack. The problem is in the context of the Green and Naghdi theory of both ty…