ONE-STEP SYNTHESIS OF OCTYLENE TERMINATED SILICON NANOPARTICLES BY A SOLUTION ROUTE

Abstract

Abstract: A one-step synthesis, octylene terminated silicon nanoparticles were prepared via co-reduction of silicon tetrachloride and octenyltrichlorosilane using LiAlH4. The particle size and distribution were investigated by transmission electron microscopy. The optical properties were analyzed with UV-visible absorption and fluorescence spectroscopy. Their surface chemistry was characterized using fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. TEM showed that the average diameter of silicon quantum dots was 5.07 ±0.80nm. Optical characterization proved the highly photoluminescence of octylene terminated silicon quantum dots. ¹H NMR and FTIR indicated that octylene group was connected to the surface of silicon nanoparticles with Si-C bond. These results lay the foundation for the further preparation and application of core-shell type silicon nanoparticles and polymer composite fluorescence biological materials.

Key words: silicon nanoparticles, surface modification, fluorescence

CLC Number:

TB332

ZHAO Qing-peng, DONG Xu, GAO Yun, PAN Zhao-qi. ONE-STEP SYNTHESIS OF OCTYLENE TERMINATED SILICON NANOPARTICLES BY A SOLUTION ROUTE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2013, 0(8): 51-54.

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