Journal
PLASMONICS
Volume 7, Issue 3, Pages 487-494Publisher
SPRINGER
DOI: 10.1007/s11468-012-9333-9
Keywords
Cellular-like gold nanofeet; Localized surface plasmon resonance; Surface enhanced fluorescence; Mercury contaminations
Funding
- National Natural Science Foundation of China [21077106, 2117131]
- National Key Scientific Program-Nanoscience and Nanotechnology [2011CB933700]
- Chinese Academy of Sciences [KCX2-YW-G-058]
- Innovation fund for talented personnel of Anhui Province [2009Z035]
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The novel cellular-like gold nanofeet (CGNF) with movable gold core, which are derived from gold/silver core shell nanorods, have been generated by galvanic reaction protocol at room temperature. The optical property based on localized surface plasmon resonance (LSPR) has been evaluated in comparison with solid gold nanofeet, suggesting that obviously high LSPR sensitivity of CGNF contributes to enhancing optical effect for detection of analytes. In contrast with superquenching properties of nanogold for fluorescence detection of pollutants, highly sensitive detection of heavy metal contaminations, e.g., mercury ions, have been implemented via DNA functionalized silica-coated CGNF on the basis of surface enhanced fluorescence (SEF) approach.
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