| 摘要 |
Surface modified silicon particle with an average particle diameter of 1-20 nm, is claimed, where the surface of the silicon particles are completely coated and comprises one or more molecular parts (Q), which are covalently bonded to the silicon over silicon-carbon-bond. Surface modified silicon particle with an average particle diameter of 1-20 nm, is claimed, where the surface of the silicon particles are completely coated and comprises one or more molecular parts (Q) of formula (-C 1>-HR-C 2>HR-(CR 2) n-X) (I) or (-C 1>H=CH-(CR 2) n-X) (II), which are covalently bonded to the silicon over silicon-carbon-bond. C 1>a carbon atom, which forms the covalent silicon-carbon-bond; C 2>not defined; X : molecular residue with a delocalized pi-electron system, preferably optionally substituted cyclic, aromatic residue containing one or more heteroatoms of N, O, S or P; R : H (preferred), CH 3, C 2H 5, n-C 3H 7, iso-C 3H 7, n-C 4H 9, iso-C 4H 9; and n : 0-6, preferably 0. An independent claim is included for preparing the surface modified silicon particle, comprising treating silicon oxide layer with a partially or completely coated silicon particle with 1-10 wt.% hydrofluoric acid solution, in a non-oxidizing medium for 1-30 minutes and subsequently separating the hydrofluoric acid solution containing silicon particles, which are free of silicon dioxide, and reacting with one or more olefin compounds of formula (CHR=CR(CR 2) n-X) (III) or (CH=C (CR 2) n-X) (IV).
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