Materials Literature
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Here we report a versatile one-step method for producing five types of highly monodisperse transition metal oxide/organic hybrid colloids of IVb (Ti, Zr, Hf) and Vb (Nb, Ta) groups with reversibly switchable hydrophobicity and hydrophilicity. Such materials have been synthesized by simply mixing long chain carboxylic…
Superhydrophobic coatings with strong adhesion strength, high chemical stability and good self-cleaning function are fabricated by a new colloid assembly method. This method involves the utilizing of dual-sized particles to achieve a micro/nano structure, and an acidic silica sol to bond the particles with substrates.…
The adhesion of stimuli-responsive hydrogels was achieved via electrophoresis. The adhered gels were quite stable in water during repetitive swelling and shrinking processes, respectively.
Attachment of a copolymer of silafluorene and fluorene to 100 nm hollow silica nanoparticles provides a new method to detect aqueous TNT and RDX with a low detection limit using the suspended fluorescent nanoshells.
A general, reversible phase transfer protocol was demonstrated for quantum dots and metal nanoparticles. The protocol involves ligand exchange based transfer of nanoparticles from organic medium to aqueous phase, followed by electrostatic interaction based reversible transfer of nanoparticles between aqueous and organ…
Due to quantum confinement effects, tungsten trioxide nanoparticles approximately 1.4 nm in diameter prepared in channels of mesoporous silica exhibited a widened bandgap and enhanced photocatalytic performance in the decomposition of benzene.
We report detailed structural, electrical, magnetic, and specific heat studies on La0.7Ca0.3Mn1−xCrxO3 manganites. Rietveld analysis of fitted and observed x-ray diffraction patterns exhibited the single-phase nature of all the studied materials, which crystallize in Pbnm space group. Successive substitution of Cr at…
The Fe isotope effect (Fe-IE) on the transition temperature Tc and the crystal structure was studied in the Fe chalcogenide superconductor FeSe1−x by means of magnetization and neutron powder diffraction (NPD). The substitution of natural Fe (containing sime92% of 56Fe) by its lighter 54Fe isotope leads to a shift in…
A simple chemistry route is reported for the gram-scale, low-cost, rapid synthesis of highly stable Mg-ACC nanoparticles. The possible structure of Mg-ACC can be defined as Mg₀.₁₅Ca₀.₈₅CO₃·H₂O₀.₈₅. The molar ratio of Mg²(+):Ca²(+):CO₃²⁻and the concentrations of the reactants (CaCl₂, Na₂CO₃, and MgCl₂) play important r…
Magnetic properties and martensitic transformation behaviors of NiCoMnAl metamagnetic shape memory alloys were investigated. The kinetic arrest phenomenon was observed at about 40 K during thermomagnetization measurements. At temperatures ranging from 4.2 to 200 K, magnetic field-induced reverse transformation was con…
We review the electronic properties of graphene nanoribbons functionalized by various elements and functional groups. Graphene nanoribbons are strips of graphene, the honeycomb lattice of carbon with s p 2 hybridization. Basically nanoribbons can be classified into two categories, according to the geometry of their ed…
The study was carried out to develop procedure for determining concentration of formaldehyde to be used for crosslinking of gelatin in the presence of drugs having amino groups. Gentamicin sulfate was used as a drug candidate due to its high content of amino acids. Gelatin crosslinking is accelerated by aldehyde-conta…
Submicrometer single crystal diffractometry for highly accurate structure determination was developed using the extremely stable and highly brilliant synchrotron radiation from SPring‐8. This was achieved using a microbeam focusing system and the submicrometer precision low‐eccentric goniometer system. We demonstrated…
A microwave-assisted synthetic procedure is presented for the preparation of low-toxic Mn:ZnSe/ZnS core/shell nanocrystals to label antibodies for selective detection of human immunoglobulin G (IgG) based on fluorescence resonance energy transfer (FRET) between the Mn:ZnSe/ZnS and Au nanoparticles (AuNPs).
The use of phosphonic acids in the synthesis of mixed-metal CeMn complexes has led to the formation of two phosphonate complexes with unusual topologies: [Ce(2)Mn(6)O(6)(OH)(5)(t-BuPO(3))(6)(O(2)CMe)(3)] x 53 H(2)O (1 x 53 H(2)O) and [Ce(22)Mn(12)O(34)(MePO(3))(12)(O(2)CMe)(33)(OMe)(6)(NO(3))(H(2)O)(12)](n) (2). The t…
This paper reports on phase transition photo-induced by a nanosecond laser pulse in the molecular spin crossover material [Fe(NH(2)-trz)(3)] (Br)(2).3H(2)O (with NH(2)trz = 4-amino-1,2,4-triazole) around room temperature and in the close vicinity of the thermal hysteresis loop. The measurements are carried out using a…
Silver spike arrays with triangular sharp edges were prepared by using a self-organization process based on the condensation of water droplets and the vapor deposition process. Strongly enhanced Raman scattering of rhodamine 6G on the spike arrays were shown.
A new FRET-based, photoswitchable fluorescent dyad derived from a spiropyran-polythiophene conjugate was developed and applied to the detection of cyanide anion.
Cylindrical ferromagnetic nanowires encapsulated inside multiwalled carbon nanotubes (MWNTs) are synthesized by pyrolyzing either ferrocene powder or ferrocene–toluene mixtures. By changing the way the precursor is thermolyzed, we have been able to control the composition of the ferromagnetic byproducts. In particular…
To understand the codoping synergistic effects in metal oxide semiconductors with wide band gaps as photocatalysts, we chose N-doped SrTiO(3) as a host to determine the effects of some nonmetal and metal codopants on it by performing the first-principles calculations for N/H-, N/X- (X = F, Cl, Br, I), N/M(1)- (M(1) =…