Materials Literature
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An approach to quantitatively image targeted-agent binding rate in vivo is demonstrated with dual-probe injection of both targeted and nontargeted fluorescent dyes. Images of a binding rate constant are created that reveal lower than expected uptake of epidermal growth factor in an orthotopic xenograft pancreas tumor…
In this work, a smectite clay from the State of Paraiba, Brazil, was treated with six different types of ammonium salts, which is an usual method to enhance the affinity between the clay and polymer for the preparation of nanocomposites. The clays, before and after modification, were characterized by X ray diffraction…
The syntheses, structures and magnetic properties of the compounds of formula [Fe(III)(5-NO(2)sal(2)-trien)][Mn(II)Cr(III)(ox)(3)]·CH(3)NO(2).0.5H(2)O (1) and [Fe(III)(5-CH(3)Osal(2)-trien)][Mn(II)Cr(III)(ox)(3)] (2) are reported. The structure of 1, that crystallizes in the P2(1) chiral space group, presents a 2D hon…
We present a structural investigation of thirteen homoleptic complexes containing {Co(tpy)2}2+ or {Co(tpy)2}3+ cores and tpy, Cltpy, MeOtpy, EtOtpy or PrOtpy ligands (Cltpy = 4′-chloro-2,2′:6′,2″-terpyridine, MeOtpy = 4′-methoxy-2,2′:6′,2″-terpyridine, EtOtpy = 4′-ethoxy-2,2′:6′,2″-terpyridine, PrOtpy = 4′-propoxy-2,2…
The first synthesis of a new highly ordered divinylaniline-bridged periodic mesoporous organosilica (PMO) with crystal-like pore walls and further chemical modification of the amino groups on the inner surface of the product by a peptide formation reaction with a chiral amino acid are reported.
The polarization properties of the luminescence of an undoped InGaAs quantum well in InGaAs/GaAs het-erojunctions with a Mn delta layer in the GaAs barrier have been studied in a wide range of temperatures and magnetic fields. It has been found that the s , p - d exchange interaction of carriers in the quantum well wi…
Terpyridine derivatives proved to be versatile hydrogelators when subjected to ultrasound irradiation in their bis-protonated form. The chelating ability of the terpyridine ligands allows for the capture of metal cations resulting in stable gels with tunable emissive properties.
A convenient synthesis strategy was developed to synthesize tadpole-like and heliotrope seed-like AgInS2 nanocrystals by thermolysis of sliver acetylacetonate (Agacac) and indium acetylacetonate [In(acac)3] in a high boiling point solvent. Transmission electron microscopy (TEM), high-resolution TEM (HRTEM), two-dimens…
The high stability of Salonen's thermally carbonized porous silicon (TCPSi) has attracted attention for environmental and biochemical sensing applications, where corrosion-induced zero point drift of porous silicon-based sensor elements has historically been a significant problem. Prepared by the high temperature reac…
The synthesis, structural characterization (XRD), and thermal properties of nine non-metal cation (NMC) pentaborate anion salts, [NMC][B(5)O(6)(OH)(4)] (1a-1i) is described (NMC = [NH(3)CMe(2)(CH(2)OH)](+) (a), [O(CH(2)CH(2))(2)NH(2)](+) (b), [NH(3)CMe(CH(2)OH)(2)](+) (c), [2-(2-CH(2)CH(2)OH)PyH](+) (d), [(CH(2))(4)NH…
A new approach for fabricating a series of multi-functional honeycomb-patterned films was successfully achieved using ionomers via breath figures.
Typically, tissue-engineered scaffolds mimic the topographical properties of the native extracellular matrix. However, other physical properties, such as the scaffold mechanical stiffness, are not imitated. The purpose of this study was to fabricate scaffolds with improved mechanical properties and investigate their b…
An unprecedented Au-Ag alkynyl-diphosphine aggregate, obtained via CO-reduction of a mixture of simple reagents, exhibits intense room-temperature phosphorescence free from O(2) quenching, and serves as an excellent phosphorescence dye suited for both one- and two-photon imaging in human stem cells.
Electron spin resonance (ESR) has emerged as a powerful spectroscopic technique to study the properties of metal nanoparticles (NPs) protected by a self-assembled monolayer (SAM) of organic molecules. This technique has been employed to explore the capacity of homoligand monolayers to bind to a hydrophobic probe or to…
A facile approach is proposed to fabricate a lotus leaf effect superhydrophobic coating constructed from calcium hydroxide microcapsules with a porous polymer shell. The capsules coated onto the substrates are robust due to the intermediate cured epoxy resin. A nanostructured hydrophobic calcium stearate precipitate f…
Recent advances in biological applications of conjugated polymers have focused on highly sensitive diagnostics. The therapeutics of conjugated polymers, however, remains a challenging task. Here we explore for the first time that cationic polythiophene (PMNT) is used as a multifunctional agent for simultaneous cancer…
The work is concerned with the effects of glycerol content and pH value of film forming solution on the functional properties of protein-based films. The films were produced of chicken breast proteins, dissolved under either acidic (pH 3) or alkaline (pH 11) conditions, with different concentrations of glycerol (35%,…
SnTe nanocrystals with different shapes and sizes are synthesized by a simple and facile method. The length of the fatty chain in amine has an important effect on the shape and size of SnTe nanocrystals. When oleylamine (OLA) is used as ligand, SnTe nanoparticles with size of 4 nm and high crystallinity are produced.…
Uniform PbS-Au nanostar-nanoparticle heterodimers consisting of one Au nanoparticle grown on one horn of a well-defined six-horn PbS nanostar were prepared using the PbS nanostars as growth substrates for the selective deposition of Au nanoparticles. The size of the Au nanoparticles on the horns of the PbS nanostars c…
Composites based on jute fabrics and polypropylene was fabricated by heat-press molding technique. The mechanical properties of the composites such as tensile strength, tensile modulus, bending strength, bending modulus and impact strength were measured in dependence of fiber contents. In order to improve fiber-matrix…