نتایج جستجو برای: thiophenol
تعداد نتایج: 220 فیلتر نتایج به سال:
Density Functional Theory (DFT) calculations have been carried out in order to unravel the governing reaction mechanism in copper-catalyzed cross-coupling Ullmann type reactions between iodobenzene (1, PhI) and aniline (2-NH, PhNH2), phenol (2-O, PhOH) and thiophenol (2-S, PhSH) with phenanthroline (phen) as the ancillary ligand. Four different pathways for the mechanism were considered namely ...
Surface-enhanced Raman spectroscopy (SERS) was originally discovered in the 1970s [1, 2] where it was found that submonolayers of small nonresonant organic molecules, such as pyridine, when adsorbed onto the surface of silver nanoparticles (and a few other metals such as copper and gold) would exhibit greatly enhanced Raman intensities (enhancements of 10). These results have always held the pr...
Nano-/microparticles of gallium (Ga), as a low-melting-point metal, are extensively used in the fields soft electronics and sensors to provide thermal electrical conductivity. However, passivating oxide layer can be formed on surface Ga nano-/microparticles during synthesis process. This is removed by secondary sintering step, especially mechanical sintering, which generally not controllable pr...
A series of substituted benzoyl radicals has been generated by laser flash photolysis of alpha-hydroxy ketones, alpha-amino ketones, and acyl and bis(acyl)phosphine oxides, all of which are used commercially as photoinitiators in free radical polymerizations. The benzoyl radicals have been studied by fast time-resolved infrared spectroscopy. The absolute rate constants for their reaction with n...
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