Abstract
Double stabilization of the silicon nanocrystals was observed for the first time by 29Si and 13C MAS NMR spectroscopy. The role of solvent, 1,2-dimethoxyethane (glyme), in formation and stabilization of silicon nanocrystals as well as mechanism of modification of the surface of silicon nanocrystals by nitrogen-heterocyclic carbene (NHC) was studied in this research. It was shown that silicon nanocrystals were stabilized by the products of cleavage of the C–O bonds in ethers and similar compounds. The fact of stabilization of silicon nanoparticles with NHC ligands in glyme was experimentally detected. It was demonstrated that MAS NMR spectroscopy is rather informative for study of the surface of silicon nanoparticles but it needs very pure samples.
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This study was financially supported by the Russian Foundation for Basic Research (Grant 15–03–06948) and Lomonosov Moscow State University Program of Development.
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Kolyagin, Y.G., Zakharov, V.N., Yatsenko, A.V. et al. Double stabilization of nanocrystalline silicon: a bonus from solvent. J Nanopart Res 18, 17 (2016). https://doi.org/10.1007/s11051-016-3322-4
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DOI: https://doi.org/10.1007/s11051-016-3322-4