Materials Literature
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The electronic conductivity of Langmuir−Blodgett monolayers of silane-passivated silicon nanoparticles (core diameter 3.86 ± 0.85 nm) was examined by electrochemical measurements within the context of photoirradiation and at controlled temperatures. Temperature dependence of the dark conductivity indicated that the in…
A hybrid material constructed of 3/19 site-modified Brucite-like cobalt hydroxide and cobalt-oxalate, two types of new layered structural motifs, has been synthesized that shows rare 3D Co-O-Co connectivity and ferrimagnetic ordering.
Abstract The effect of a nonionic surfactant on various energy‐transfer and quenching processes in deoxyribonucleic acid (DNA) sequence detection using the cationic conjugated polymer (CCP) poly{[9,9‐bis(N,N,N‐trimethylammonium)hexylfluorene]‐co‐1,4‐phenylene diiodide} and peptide nucleic acid labeled with fluorescein…
A composite scaffold of poly(L-lactic-co-glycolic acid) (PLGA) microspheres and fibrin gel was fabricated by blending fibrinogen-immobilized PLGA microspheres with fibrinogen and thrombin solution. The PLGA microspheres with a size of 70 approximately 100 microm were aminolyzed in a hexanediamine/n-propanol solution t…
Using a novel alternating target laser ablation deposition technique, Mn cations were placed in specific interstitial sites of BaFe12O19 thin films as opposed to being distributed throughout the unit cell as in conventional bulk materials. The distribution of Mn cations has been confirmed experimentally and predicted…
Abstract Effects of Sn and Ca additions on microstructure, mechanical properties, and corrosion resistance of the as‐cast Mg‐6Zn‐2Al‐based alloy were investigated by SEM, XRD, tensile tests, electrochemical measurements, etc. The higher the Sn content, the higher the yield strength of the Mg‐6Zn‐2Al‐based alloy. Trace…
Loading of graphite oxide (GO) with tris(2,2'-bipyridyl) iron(II) ions and subsequent calcination affords a novel graphene-based composite with magnetic and electrically conductive properties. The pH of the starting aqueous suspension and the washing procedure play a crucial role in the successful immobilization of th…
Ionic self-assembly is used as a convenient process to template luminescent smectic and columnar liquid-crystalline phases from ionic Alq3 complexes. The complexes are soluble in organic solvents, transparent, and luminescent films can be obtained by slow evaporation or spin-coating.
This work demonstrates that the donor-acceptor-donor charge-transfer chromophores can be tailor-made to be near-infrared absorbing and fluorescent, as well as being liquid crystals. The chromophore containing an extremely strong acceptor of benzo[1,2-c:4,5-c']bis([1,2,5]thiadiazole) can form a columnar mesophase that…
Here, we report a synthesis of novel polyaniline nanospheres bearing mono- and bishydroxyl functional groups to trace the molecular interactions at the nanosurfaces through vitamin C sensing. Two new aniline monomers were synthesized via a tailor-made approach and polymerized to produce soluble and uniform polyaniline…
Single-wall carbon nanotubes covalently functionalized with chloro-phenyl groups were investigated by Raman spectroscopy. We examine the features observed in the spectral ranges 350−1200, 1650−2000, and 2400−3200 cm −1 . The Raman modes associated with the presence of defects, strongly enhanced by the functionalizatio…
Abstract Slow continuous mechanical tests of oriented poly(propylene) (PP) are monitored by combined two‐dimensional (2D) ultra‐small‐angle X‐ray scattering (USAXS) and small‐angle X‐ray scattering (SAXS). Patterns are transformed to the 3D chord distribution (CDF), a real‐space representation of nanostructure. From t…
Electrospinning is a process used to produce ultrafine fibers with diameters in the nanometer range. Electrospun fiber mats have high potentials for biomedical uses, due to their high surface area and ease of drug incorporation into the fibers. They can be used as carriers for drug delivery and can enhance drug releas…
Role of the donor groups connected to the oxyallyl central moiety (suggested to be a powerful acceptor) has been emphasized in the literature for tuning the absorption maxima and obtaining large NLO activity in croconates and squaraine dyes which are oxyallyl derivatives. Here we have prepared a series of new croconat…
A series of ternary Ln(tta) 3 L complexes (Ln = Ho, Tm; Htta = 2-thenoyltrifluoroacetone; L = 1,10-phenanthroline, 2,2′-bipyridine, or triphenyl phosphate oxide) and their corresponding sol−gel hybrid materials formed via the in situ synthesis process (designated as Ln-T-L gel) were reported. The complexes and the gel…
We have performed first-principles calculations for body-centered tetragonal (bct) Si and Ge consisting solely of four-fold coordinated elements. The structural optimization has been carried out based on the local density approximation (LDA) in the density functional theory (DFT). For total-energy minimized structures…
Abstract Nitrogen‐doped tetrahedral amorphous carbon (ta‐C : N) films were deposited by filtered cathodic vacuum arc (FCVA) technique using nitrogen as a background gas. The structure of the ta‐C : N films was studied with X‐ray photoelectron spectroscopy (XPS) and Raman spectroscopy in terms of nitrogen flow rate use…
Den Hebel umgelegt: Ein photoinduzierter Elektronentransfer (PET) zwischen der Perylengruppe und der geschlossenen, nicht aber der offenen Form der Diaryletheneinheit charakterisiert den Prototyp eines optischen Speichers auf der Grundlage einer photochromen Diarylethen-Perylenbisimid-Diade (siehe Bild). Für Lesen, Sc…
We report growth, monolayer formation, and (electrical bistability and memory phenomenon) properties of hybrid core-shell nanoparticles. While inorganic quantum dots, such as CdS or CdSe, act as the core, a monolayer of ionic organic dye molecules, electrostatically bound to the surface of functionalized quantum dots,…
The local structural environment, and the spatial distribution of iron and aluminum ions in sodosilicate glasses with composition ${\text{NaFe}}_{x}{\text{Al}}_{1\ensuremath{-}x}{\text{Si}}_{2}{\text{O}}_{6}$ ($x=1$, 0.8, 0.5, and 0) were studied by high-resolution neutron diffraction combined with structural modeling…