Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 342, Issue 2, Pages 571-574Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2009.10.060
Keywords
Gold nanoparticles; High SERS efficiency; Inositol hexaphosphate
Categories
Funding
- National Natural Science Foundation of China [20975068]
- Shanghai Normal University [DZL706]
- National Basic Research Program of China [2008CB617504]
- Foundation of Shanghai Normal University [DYL200703, DYL701]
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This paper described a facile method for preparation of gold nanoparticles with high efficient SERS activity within short reaction time in the presence of an environmentally benign and low-cost reagent named inositol hexaphosphate (IP6). IP6 acted as a tunable cross-linker to obtain a suitable separation (about 2 nm) between the neighboring particles for certain Surface plasmons by adjusting the dosages Of IP6. When the molar ratio of Au to IP6 was 10:1, gold particles presented in nano-pearl-necklace pattern, demonstrating the high enhancement factor (>10(7)) for 2-melcaptopyridine (2-Mpy) Raman scattering and high stability (>2 months). (C) 2009 Elsevier Inc. All rights reserved.
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