A SERS active gold nanostar dimer for mercury ion detection

A SERS active gold nanostar dimer for mercury ion detection

A self-assembled nanostar dimer based on the Hg(2+)-mediated T-T base pair of ssDNA has been developed as a SERS sensor for Hg(2+) detection. The enormous enhancement of the electromagnetic field by the dimer structures facilitates extraordinary SERS intensity. The LOD is 0.8 pg mL(-1) and its linea...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2013-01, Vol.49 (44), p.4989-4991
Hauptverfasser: Ma, Wei, Sun, Maozhong, Xu, Liguang, Wang, Libing, Kuang, Hua, Xu, Chuanlai
Format: Artikel
Sprache:eng
Schlagworte:
Base Pairing
Dimerization
DNA, Single-Stranded - chemistry
Gold - chemistry
Ions - chemistry
Mercury - analysis
Nanostructures - chemistry
Nucleic Acid Hybridization
Spectrum Analysis, Raman
Thymine - chemistry
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Zusammenfassung:A self-assembled nanostar dimer based on the Hg(2+)-mediated T-T base pair of ssDNA has been developed as a SERS sensor for Hg(2+) detection. The enormous enhancement of the electromagnetic field by the dimer structures facilitates extraordinary SERS intensity. The LOD is 0.8 pg mL(-1) and its linear range is 0.002 to 1 ng mL(-1).
ISSN:1359-7345
1364-548X
DOI:10.1039/c3cc39087j