We conclude that the localized Gd induced polarization can not account for long range magnetic ordering in a defect-free ZnO wurtzite lattice. (C) 2011 American Institute of Physics. [doi:10.1063/1.3574924]“
“A
novel, highly efficient, polymerizable sulfur-containing photoinitiator for free radical polymerization, benzophenone thio-acetic acid (BP-S-CH(2)-COOH) was synthesized, characterized, and compared to photoinitiator parameters of the benzophenone (BP) and benzophenone/(phenylthio) acetic acid couple. The photoinitiator possesses a greatly redshifted UV maximal absorption www.selleckchem.com/products/MS-275.html in comparison to BP. Laser flash photolysis studies suggest that photoinitiator radicals are generated by photocleavage of CAS bond. Photopolymerization of 2-ethyl-2-(hydroxymethyl)-1,3-propanediol triacrylate (TMPTA) demonstrated that one-component system BP-S-CH(2)-COOH is more efficient for polymerization than two-component system. (C) 2011
Wiley Periodicals, Inc. J Appl Polym Sci 122: 2604-2608, 2011″
“Herein we present a detailed analysis of the optical response of artificial opal films realized employing a near-field scanning optical microscope in collection and transmission modes. Near-field patterns measured at the rear surface when a plane wave impinges on the front face are presented with the finding that optical intensity maps present a clear correlation with the periodic arrangement of the outer surface. Calculations based
on the vector Korringa-Kohn-Rostoker method reproduce the different profiles experimentally observed as Torin 2 well as the response to AZD5153 research buy the polarization of the incident field. These observations constitute the first experimental confirmation of the collective lattice resonances that give rise to the optical response of these three dimensional periodic structures in the high-energy range. (C) 2011 American Institute of Physics. [doi:10.1063/1.3573777]“
“The bisphenol-containing 4,4′-biphenylene moiety was prepared by the reaction of 4,4′-bis(methoxymethyl) biphenyl with phenol in the presence of p-toluenesulfonic acid. The bisphenol was end-capped with the cyanate moiety by reacting with cyanogen chloride and triethylamine in dichloromethane. Their structures were confirmed by Fourier transform infrared spectroscopy, (1)H-NMR, and elemental analysis. Thermal behaviors of cured resin were studied by differential scanning calorimetry, dynamic mechanical analysis, and TGA. The flame retardancy of cured resin was evaluated by limiting oxygen index (LOI) and vertical burning test (UL-94 test). Because of the incorporation of rigid 4,4′-biphenylene moiety, the cyanate ester (CE) resin shows good thermal stability (T(g) is 256 degrees C, the 5% degradation temperature is 442 degrees C, and char yield at 800 degrees C is 64.