Journal
CHEMICAL PHYSICS LETTERS
Volume 468, Issue 4-6, Pages 245-248Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2008.12.028
Keywords
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Funding
- Korea Research Foundation Grant funded by the Korean Government (MOEHRD) [KRF-2007313-C00368]
- MOST/KOSEF to the Environmental Biotechnology National Core Research Center [R15-2003-012-01001-0]
- EPB Center [R112008-052-02003]
- Pioneer Research Center for Nano-morphic Biological Energy Conversion and Storage
- National Research Foundation of Korea [과06B1509, 2008-0062042] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Nanocrystalline gold octahedrons were synthesized in an aqueous environment via the reduction of HAuCl4 by ascorbic acid with the addition of NaOH. Highly monodisperse octahedral particles with controlled sizes ranging from 20 to 40 nm were prepared in high-yield by varying the reaction temperature. The structural and optical properties of the synthesized gold nanoparticles were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and UV-vis spectroscopy. The prepared nanoparticles exhibited efficient surface-enhanced Raman scattering (SERS) properties, and their SERS activities were highly size-dependent. (C) 2008 Elsevier B. V. All rights reserved.
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