Materials Literature
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The title compound, {[Mn(C(10)H(28)N(6))][Sn(3)Se(7)]}(n), consists of anionic (infinity){[Sn(3)Se(7)](2-)} layers interspersed by [Mn(peha)](2+) complex cations (peha is pentaethylenehexamine). Pseudocubic (Sn(3)Se(4)) cluster units within each layer are held together to form a 6(3) net with a hole size of 8.74 x 13.…
Illicit drugs are imported into countries in myriad ways, including via the postal system and courier services. An automated system is required to detect drugs in parcels for which X-ray diffraction is a suitable technique as it is non-destructive, material specific and uses X-rays of sufficiently high energy to penet…
Abstract Novel polyaniline (PANI) with nanotube, nanosheet, and nanofiber shapes was facilely synthesized by a self‐templating one‐pot process. Anilinium‐dodecylsulfate (DS) complex, obtained by mixing equivalent amounts of aniline and sodium dodecylsulfate (SDS), played a template‐like role in forming PANI nanostruct…
Abstract Library of semiconductors : Mixtures of binary chalcogenidostannate anions in protic solution show statistic chalcogenide exchange (see scheme), which is examined by comprehensive NMR investigations, DFT calculations and chemical reactions. A simple approach is provided to generate a library of semiconductor…
Abstract Silicon carbon nitride thin films are deposited by sputtering a silicon carbide target under mixed Ar–N 2 atmosphere. The flow ratio ( R F = [N 2 ]/[N 2 ] + [Ar]) of these two gazes is set between 0 and 1. The deposits were analyzed by Rutherford backscattering (RBS), infrared, Raman, and electron spin resona…
Inorganic/organic coassembly provides a powerful route to the formation of periodic, nanostructured materials. In this work, the surfactant cetyltriethylammonium bromide is used as an organic structure directing agent, and the inorganic phase is formed from the condensation of metal cations with reduced main group clu…
Learning from nature's amazing molecular machines, globular proteins, we present a framework for the predictive design of nanomachines. We show that the crucial ingredients for a chain molecule to behave as a machine are its inherent anisotropy and the coupling between the local Frenet coordinate reference frames of n…
The morphology of nanofibrous nonwoven mats of an electrospun biodegradable polymer nanocomposite was studied in order to define the material and process parameter settings capable of giving the targeted nanofibrous structure of the mats. The polymer solution concentration, the flow rate of the injected solution, and…
The first excited singlet state of tropolone (A (1)B(2)) and the attendant pi(*)<--pi electronic transition have been examined computationally by applying several quantum chemical treatments built upon the aug-cc-pVDZ basis set, including time-dependent density functional theory (TDDFT/B3LYP), configuration interactio…
In this study, the polyester urethane Degrapol (DP) was explored for medical applications. Electrospun DP-fiber fleeces were characterized with regard to fiber morphology, swelling, and interconnectivity of interfiber spaces. Moreover, DP was assayed for cell proliferation and hemocompatibility being a prerequisite to…
The ability to introduce substituents at designated sites about the perimeter of the chlorin or 13(1)-oxophorbine macrocycle is essential for fundamental studies related to chlorophylls. A chlorin is a dihydroporphyrin, whereas a 13(1)-oxophorbine is a chlorin containing an annulated oxopentano ring spanning positions…
Simulation results of near infrared (100- to 200-THz) fishnet-structure negative-index metamaterials (NIMs) with single and multiple functional layers exhibit bi-anisotropy - inhomogeneous asymmetry - due to the presence of a sidewall-angle. The influence of sidewall-angle resulting from realistic fabrication processe…
Abstract Two novel phosphorus‐functionalized aromatic diamines, 1,1‐bis(4‐aminophenyl)‐1‐(6‐oxido‐6H‐dibenz <c,e> <1,2> oxaphosphorin‐6‐yl)ethane ( 1 ) and bis(4‐aminophenyl)‐(6‐oxido‐6H‐dibenz <c,e> <1,2> oxaphosphorin‐6‐yl)phenylmethane ( 2 ), were prepared from 9,10‐dihydro‐oxa‐10‐phosphaphe…
Scanning electrochemical microscopy (SECM) is employed to characterize the transport of redox-active probe ions through quenched polyelectrolyte brushes. The counterion exchange through polyelectrolyte brushes is also investigated by infrared spectroscopy in attenuated total reflection (FTIR-ATR), X-ray photolectron s…
Abstract The effect of hydrocarbon oil incorporation on the rheological and phase behaviors of poly(styrene‐ b ‐(ethylene‐ co ‐butylene)‐ b ‐styrene) (SEBS) has been investigated. SEBS‐A1 (neat SEBS) shows a presence of very long relaxation time mode even at the highest temperature carried out here. On the other hand,…
Nanocrystals of thermodynamically stable alpha-MnAs (hexagonal NiAs-type) and metastable beta-MnAs (orthorhombic MnP-type) have been synthesized by the reaction of triphenylarsine oxide (Ph(3)AsO) and dimanganesedecacarbonyl (Mn(2)CO(10)) at temperatures ranging from 250 to 330 degrees C in the presence of the coordin…
We report an approach of exploring the interaction between cationic surfactants and a type of structurally well-defined, spherical "Keplerate" polyoxometalate (POM) macroanionic molecular clusters, {Mo72V30}, in aqueous solution. The effectiveness of the interaction can be determined by monitoring the size change of t…
The interaction of nitrogen oxides NO x ( x = 1−3) with γ-Al 2 O 3 has been investigated using first-principles density functional theory calculations. NO and NO 2 weakly physisorb on the clean, dehydrated (100) and (110) surfaces of γ-Al 2 O 3, whereas the adsorption of the NO 3 radical is rather strong. Only the bas…
Magnesium tetraphenylporphyrin (MgTPP) was synthesized from meso-tetraphenylporphyrin (H(2)TPP) in N,N-dimethylformamide (DMF). The photochemical properties of MgTPP in the presence of oxygen were investigated in dichloromethane (CH(2)Cl(2)) by conventional fluorescence, UV-vis, (1)H NMR, MALDI-TOF-MS, FTIR, and XPS s…
In this work, colloidal spheres with different average diameters were prepared by using azo polymers (BP-AZ-CA and BP-AZ-NT) and photoinduced deformation behavior of the colloidal spheres was studied. The colloidal spheres were prepared through gradual hydrophobic aggregation of the polymeric chains in THF/H2O media a…