Materials Literature
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Magnetic-dipolar-mode (MDM) oscillations in a quasi-2D ferrite disk show unique dynamical symmetry properties resulting in appearance of topologically distinct structures. Based on the magnetostatic (MS) spectral problem solutions, in this paper we give an evidence for eigen MS power-flow-density vortices in a ferrite…
Silver nanoparticles were prepared by chemical reduction method. Silver nitrate was taken as the metal precursor and hydrazine hydrate as a reducing agent. The formation of the silver nanoparticles was monitored using UV-Vis absorption spectroscopy. The UV-Vis spectroscopy revealed the formation of silver nanopart├¡cl…
Abstract This paper reports synthesis and electrochemistry of six-coordinate ruthenium porphyrin isomers including six novel porphycene complexes with substituted pyridines in the axial positions, in which redox potential control of reversible RuII/RuIII processes is successfully achieved over a 0.7-V potential region…
Abstract A novel gelator containing 9-(9′-acridyl)carbazole (TICT probe) and azobenzene within a molecule was synthesized and the photoresponsive gel properties were investigated by spectroscopic analyses; it showed an interesting photoinduced fluorescence wavelength change, which leads to a potential development towa…
A general method for the generation of two-dimensional (2D) ordered silver nanoparticles (av 45 nm) ring array has been demonstrated via controllable self-assembly. The selective self-assembly is conducted on the edges of a gold coated polyelectrolyte film. This film is fabricated using the monolayer polystyrene (PS)…
Reaction between the dimeric [Mn 2 (saltmen) 2 (H 2 O) 2 ] 2+ cations (with saltmen = N , N ′-(1,1,2,2-tetramethylethylene)bis(salicylideneiminato) dianion) and [Cr(CN) 6 ] 3− anions results in the isolation of a 2D layered complex, [{Mn(saltmen)} 4 Cr(CN) 6 ]ClO 4 ( 1 ), whose crystal structure has been determined an…
Three new Mn(II)−azido polymeric complexes [MnL 1 (N 3 ) 2 ·CH 3 OH] n ( 1 ) (L 1 = 1-(2-pyridyl)-1-amino-4-(6-bromo-2-pyridyl)-2,3-diaza-1,3-butadiene), [MnL 2 (N 3 ) 2 ] n ( 2a ) and [Mn 2 (L 2 ) 2 (N 3 ) 4 ] n ( 2b ) (L 2 = 1-(2-pyridyl)-1-amino-4-benzyl-2,3-diaza-1,3-butadiene) have been synthesized and crystallog…
The two-photon excited luminescence (TPEL) of single gold nanowires was investigated under far-field illumination with picosecond pulses. These nanowires, having a rectangular cross-section, a precisely defined thickness, and millimeter-scale length, were prepared by using the lithographically patterned nanowire elect…
Graphene grown on cubic BN (111) is studied using the first-principles method based on density functional theory. Results of our calculations reveal that spin polarized surface states break the equivalence of the A and B sublattices and lead to spin polarized graphene bands with finite energy gaps. As a result, spin p…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTNetwork Effects on the Nonlinear Rheology of Polymer NanocompositesJames D. Thomin†, Pawel Keblinski‡, and Sanat K. Kumar*§View Author Information Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute,…
Photoinduced supramolecular chiral structures in amorphous and nonchiral azo copolymer are demonstrated using circularly polarized light. The polymeric film undergoes a light-guided inhomogeneous supramolecular modification, both in the transverse and longitudinal directions. The photoinduced structure strongly affect…
Four classic discrete Weakley-type sandwich germanotungstates, Na 11 H[Co 4 (H 2 O) 2 (α-GeW 9 O 34 ) 2 ]·31H 2 O ( 1 ), [Co(phen) 3 ] 4 H 3 [Co 3 W(H 2 O) 2 (α-GeW 9 O 34 ) 2 ]·4H 2 O ( 2 ), (C 6 N 2 H 18 ) 4 [Co(H 2 O) 6 ]H 2 [Co 4 (H 2 O) 2 (α-GeW 9 O 34 ) 2 ]·5.5H 2 O ( 3 ), Na(H 2 O) 2 (C 6 N 2 H 18 ) 4.75 H 1.5…
Derivatives of dipicolinic acid with a polyoxyethylene pendant arm at the pyridine 4-position have been functionalized for potential grafting with biological material. Four ligands with different terminal functions (alcohol, methoxy, phtalimide and amine) have been synthesized, which react with trivalent lanthanide io…
Several novel hierarchical ZnO nanostructures have been successfully prepared in mixed solvents of ethylene glycol (EG)−water via a facile microwave-assisted method. By only change of the heating parameters of the microwave oven, ZnO nanostructures with straw-bundle-like, wide chrysanthemum-like, and oat-arista-like m…
Two inorganic polyoxoanions react with carbon dioxide in aqueous solution to yield two polymeric chainlike complexes, where an activated CO2 molecule covalently bonds to polyoxoanions in a linear mu-eta1,eta1-OCO style. For the first time, the CO2 coordination is realized by an economic and environmentally friendly ap…
1,4-Diarylpentiptycenes (1a-e) were synthesized from 1,4-dichloro- or 1,4-difluoro-2,5-diarylbenzene derivatives by double base-promoted dehydrohalogenation to give corresponding arynes, which in the presence of anthracene undergo cycloaddition providing 1,4-diarylpentiptycenes in moderate overall yields. The resultin…
One-dimensional organic heterostructures consisting of contiguous lines of CF3- and OCH3-substituted styrene molecules on silicon are studied by scanning tunneling microscopy and ab initio simulation. Dipole fields of OCH3-styrene molecules are found to enhance conduction through molecules near OCH3-styrene/CF3-styren…
Single-crystal tetragonal α-MnO 2 nanotubes have been successfully synthesized by a facile hydrothermal treatment of KMnO 4 in the hydrochloric acid solution. The sample has been characterized by X-ray powder diffraction, field emission scanning electron microscopy, transmission electron microscopy, and orientation de…
Abstract This article covers the state‐of‐the‐art light stabilizer for rotational molding and the influence of synergistic effects between light and thermal stabilizers, which improve physical and mechanical properties. Different formulations of polyethylene (PE) with light stabilizer, thermal stabilizer, and acid sca…
We conduct a numerical study of the dynamical behavior of a system of three-dimensional "crosses," particles that consist of three mutually perpendicular line segments of length sigma rigidly joined at their midpoints. In an earlier study [W. van Ketel, Phys. Rev. Lett. 94, 135703 (2005)] we showed that this model has…