Journal
CRYSTENGCOMM
Volume 13, Issue 10, Pages 3562-3568Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ce05084b
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Funding
- National Natural Science Foundation of China [50972080]
- National Basic Research Program [2009CB930101]
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Hierarchical, three-fold symmetrical, single-crystalline gold dendrites are synthesized on different metal substrates including Al, Zn, and Ni in a mixture of ethanol and water with the assistance of an ionic liquid. Structural characterizations suggest that the obtained gold dendrites are grown along the < 211 > directions. Such < 211 >-oriented gold dendrites are seldom reported. Both the metal substrate and the volume ratio of ethanol and water have demonstrated a significant effect on the dendrite morphologies. The obtained gold dendrites are found to yield large SERS enhancement factors for rhodamine 6G (R6G) and the morphology of the branches is a key for the enhancement.
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