Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 118, Issue 11, Pages 5961-5967Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp412632n
Keywords
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Funding
- National Research Foundation of Korea (NRF)
- Korea government [2012-006345]
- SRC program of NRF [2007-0056095]
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Au@SiO2 core shell nanowires have been successfully fabricated by irradiating infrared nanosecond pulses to linearly self-assembled and silica-coated gold nanorods. Gold nanorods have been self-assembled linearly by adding isopropanol in the absence of any assembling agents to form gold nanochains. The end-to-end assembled gold nanorods then have been directly encapsulated with uniform silica shells having tunable thickness to produce silica-coated gold nanochains. The irradiation of the nanostructures loaded on a transmission electron microscopy (TEM) grid for 5 min with nanosecond laser pulses of 1064 nm at fluence of 0.38 mJ/cm(2) has produced Au@SiO2 core shell nanowires. This is a novel and straightforward synthetic approach for the production of silica-coated gold nanowires having strong near-infrared absorption, high stability, and easily fiinctionalizable surface.
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