3508-01-8Relevant academic research and scientific papers
The salts of fatty acids as precursors for preparation of silver nanoparticles in organic solvents
Glushko,Anisimova,Blokhina
, p. 1759 - 1764 (2016/10/24)
The silver salts of fatty acids were studied as precursors for the preparation of colloidal dispersions of silver nanoparticles and UHMWPE (ultra-high-molecular-weight polyethylene) composite with silver nanoparticles, as well as the composition, the spectra and SEM (scanning electron microscopy) results.
Synthesis, optical and morphological characterization of doped InP/ZnSe NCs
Mushonga, Paul,Ouma, Immaculate L.A.,Madiehe, Abram M.,Meyer, Mervin,Dejene, Francis B.,Onani, Martin O.
, p. 189 - 192 (2014/05/06)
We report on the Ag-, Fe-, and Co-doping of InP/ZnSe QDs using the growth-doping method. Doping the InP/ZnSe NCs with Ag caused a red-shift in the emission spectra with increasing dopant levels while the PL intensity decreased. Fe-doping resulted in blue-shifted emission spectra. The cobalt-doping (Co-doping) had no effect on the emission peak position. Instead, it had a quenching effect on the PL intensities. The HRTEM images showed well-defined lattice fringes for the doped InP/ZnSe NCs while the XRD analyses showed that they retained their zinc blende structure even after doping.
Structural, odd-even chain alternation and thermal investigation of a homologous series of anhydrous silver(i) n-alkanoates
Nelson, Peter Nattaniel,Ellis, Henry Anthony
, p. 2632 - 2638 (2012/04/10)
Molecular and lattice structures of a homologous series (nc = 8-20, inclusive) of silver (i) n-alkanoates are determined from X-ray Powder Diffraction, Solid State spin decoupled 13C-NMR and variable temperature Fourier Transform Infrared Spectroscopies. The compounds crystallize in a monoclinic crystal system with hydrocarbon chains in the fully extended all-trans conformation. Moreover, the chains are tilted ca. 75° with respect to the metal basal plane and are arranged as methyl(tail)-to-methyl(tail) bilayers within a lamellar. The methyl chain ends, from different layers in the bilayer, do not overlap but are in such close proximity to cause methyl-methyl interactions. In a molecule, two carboxylate groups bind in a syn-syn type bridging bidentate mode to two silver atoms to form an eight-membered structure. Intramolecular silver-silver and intermolecular Ag-O-Ag interactions stabilize the head group and promote the formation of layer type polymeric sheets. Though the compounds are nearly isostructural, odd-even chain alternation is observed in density, anti-symmetric stretching vibrations of methyl and unusually, carboxylate (head) groups, as a result of packing differences of hydrocarbon chains within the crystal lattice. These arise from the relative vertical distances between polymeric sheets, which are not in the same plane. Thus, for odd chain length compounds, where those distances are less than for even chains, more ordered packing and hence higher densities are observed for these adducts. Also, the numbers and natures of the thermotropic phase transitions are chain length dependent and irreversible. The Royal Society of Chemistry 2012.
Microwave-assisted preparation of silver nanoparticles
Yamamoto, Tetsushi,Wada, Yuji,Sakata, Takao,Mori, Hirotaro,Goto, Masaki,Hibino, Shingo,Yanagida, Shozo
, p. 158 - 159 (2007/10/03)
We succeeded in preparing silver (Ag) nanoparticles by alcohol reduction of fatty acid silver salts under microwave irradiation (2.45 GHz) for 1-5 min at 413-430 K. The average sizes of Ag nanoparticles were controlled in the range from 4.9 to 7.4 nm only
