Materials Literature
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Abstract We synthesized Sb 2 O 3 ‐B 2 O 3 ‐Bi 2 O 3 glasses doped with Sm 3+ in order to increase the spectral width of an Yb 3+ , Nd 3+ co‐doped glass phosphor. We successfully realized wideband luminescence from 850 nm to 1220 nm by stacking the Sm 3+ doped glass phosphor (1.1Sm 2 O 3 ‐44.4Sb 2 O 3 ‐44.6B 2 O 3 ‐9.9…
Abstract In this study, the dual modified organoclay (DMC), was successfully prepared by the successive cationic exchange reactions of the sodium montomorillonite clay (MMT) with two intercalating reagents, hexadecyl‐triphenyl‐phosphonium bromide and 2‐methacryloxy‐ethyl‐hexadecyl‐dimethyl‐ammonium bromide. A series o…
Substitutional solid solutions that exist in both ordered and disordered states will exhibit markedly different physical properties depending on their exact crystallographic configuration. Many random substitutional solid solutions (alloys) will display a tendency to order given the appropriate kinetic and thermodynam…
We report thermal transport properties of a ${\mathrm{K}}_{x}$Fe${}_{2\ensuremath{-}y}$Se${}_{2}$ superconducting single crystal. A peak anomaly in the thermal conductivity is observed at nearly ${T}_{C}/2$, attributed to phonons. The thermoelectric power above ${T}_{c}$ exhibits nearly linear behavior and could be de…
Previously, G protein-coupled receptor (GPCR) agonists were tethered from polyamidoamine (PAMAM) dendrimers to provide high receptor affinity and selectivity. Here, we prepared GPCR ligand--dendrimer (GLiDe) conjugates from a potent adenosine receptor (AR) antagonist; such agents are of interest for treating Parkinson…
We study heat conduction through one-dimensional homogeneous lattices in the presence of the nonlinear on-site potentials containing the bounded and unbounded parts, and the harmonic interaction potential. We observe the occurrence of double negative differential thermal resistance (NDTR); namely, there exist two regi…
One of the most fascinating topics currently being discussed in the field of biomineralization is the occlusion of organic macromolecules within mineral crystals. It is already known that intracrystalline organic inclusions in biogenic calcite improve the fracture behavior and anisotropically distort the calcite latti…
One of the most challenging strategies to achieve tunable nanophotonic devices is to build robust nanohybrids with variable emission in the visible spectral range, while keeping the merits of pristine single-walled carbon nanotubes (SWNTs). This goal is realized by filling SWNTs ("pods") with a series of oligothiophen…
The photon-driven substrate-mediated dissociation of N 2 O on thin MgO films grown on an Ag(100) crystal has been investigated with postirradiation thermal desorption spectroscopy (TDS). After excitation with 248 nm photons, we observe the simultaneous formation of N 2 and a high-temperature oxygen species, accompanie…
Abstract Photochromic compounds with improved performance in pure water have been prepared and characterized. They possess an asymmetrical and extended conjugation system with a 1,2‐bis(3‐thienyl)perfluorocyclopentene core, additional thiophene rings connected with sulfonic acid residues, as well as terminal pyrid‐4‐y…
Abstract Janus‐type dendrimer‐like poly(ethylene oxide)s (PEOs) of 1st, 2nd, and 3rd generation carrying terminal hydroxyl functions on one side and cleavable ketal groups on the other were used as substrates to conjugate folic acid as a folate receptor and camptothecin (CPT) as a therapeutic drug in a sequential fash…
Mesoporous ZrO2 thin films have been deposited by a modified sol-gel dip coating technique using HCl as catalyst. Effects of sol-age on the surface and on the optical properties are studied. Transmission electron micrographs of the films reveal the pore dimensions in mesoporous regime. A strong correlation in surface…
Eingezäunt: Durch die Koordination von DABCO an einen [12]Porphyrin-Nanoring wird ein 14-Komponenten-Komplex gebildet. 24 Zink-Stickstoff-Bindungen fixieren die konjugierten Makrocyclen in einer planaren Konformation, was zu einer deutlich schärferen NIR-Absorptionsbande führt. Dieses Ergebnis zeigt das Potenzial der…
The vacuum space inside carbon nanotubes offers interesting possibilities for the inclusion, transportation, and functionalization of foreign molecules. Using first-principles density functional calculations, we show that linear carbon-based chain molecules, namely, polyynes (C(m)H(2), m = 4, 6, 10) and the dehydrogen…
Galvanomagnetic and thermoelectric properties including Hall effect, electrical resistivity, thermopower, and thermal conductivity of polycrystalline type-I clathrates Ba${}_{8}$Ni${}_{x}$Si${}_{46\ensuremath{-}x}$ (2.6 $\ensuremath{\leqslant}$ $x$ $\ensuremath{\leqslant}$ 3.8) have been studied in the 2- to 350-K tem…
Mössbauer studies of cobalt- and nickel-doped BaFe(2)As(2) show that the s-electron density at the (57)Fe nuclei, as measured by the isomer shift, is the same as that for the parent BaFe(2)As(2). Apparently, the electron population of the d shell, which shields the s-electron density at the nuclei, remains unchanged.…
The refractive index sensitivity (RIS) of a localized surface plasmon resonance (LSPR) transducer is one of the key parameters determining its effectiveness in sensing applications. LSPR spectra of nanoparticulate gold films, including Au island films prepared by evaporation on glass and annealing as well as immobiliz…
This study represents a unique example where the self-assembly of five amphiphilic polypeptides was monitored as a function of their hydrophilic-to-lipophilic balance (HLB). The HLB was tuned by preparing a series of polypeptides with aspartic acid (Asp) and phenylalanine (Phe) according to the sequence (Asp(x)Phe(y))…
Using first-principles density functional theory, we show that, in Mn(2)NiSn, an energy lowering phase transition from the cubic to tetragonal phase occurs which indicates a martensitic phase transition. This structural phase transition is nearly volume-conserving, implying that this alloy can exhibit shape memory beh…
Polarized light microscopy (PLM) is used to image individual single-walled carbon nanotubes (SWNTs) suspended in air across a slit opening. The imaging contrast relies on the strong optical anisotropy typical of SWNTs. We combine PLM with a tunable light source to enable hyperspectral excitation spectroscopy and nanot…