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Silicon nanoparticles with chemically tailored surfaces
Author(s) -
Heintz Andrew S.,
Fink Mark J.,
Mitchell Brian S.
Publication year - 2010
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.1602
Subject(s) - nanoparticle , chemistry , silicon , covalent bond , chemical engineering , nanotechnology , infrared spectroscopy , luminescence , x ray photoelectron spectroscopy , spectroscopy , photochemistry , organic chemistry , materials science , optoelectronics , physics , quantum mechanics , engineering
Silicon nanoparticles are useful materials for optoelectronic devices, solar cells and biological markers. The synthesis of air‐stable nanoparticles with tunable optoelectronic properties is highly desirable. The mechanochemical synthesis of silicon nanoparticles via high‐energy ball milling produces a variety of covalently bonded surfaces depending on the nature of the organic liquid used in the milling process. The use of the C 8 reactants including octanoic acid, 1‐octanol, 1‐octaldehyde and 1‐octene results in passivated surfaces characterized by strong SiC bonds or strong SiO bonds. The surfaces of the nanoparticles were characterized by infrared spectroscopy and nuclear magnetic resonance spectroscopy. The nanoparticles were soluble in common organic solvents and remarkably stable against agglomeration and air oxidation. The luminescence and optical properties of the nanoparticles were very sensitive to the nature of their passivating surface. Copyright © 2009 John Wiley & Sons, Ltd.