title: A SERS active gold nanostar dimer for mercury ion detection.
abstract: 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).
authors.affiliation: School of Food Science and Technology, State Key Lab of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Ma
authors.forename: Maozhong
authors.initials: M
authors.lastname: Sun
authors.forename: Liguang
authors.initials: L
authors.lastname: Xu
authors.forename: Libing
authors.initials: L
authors.lastname: Wang
authors.forename: Hua
authors.initials: H
authors.lastname: Kuang
authors.forename: Chuanlai
authors.initials: C
authors.lastname: Xu
mesh_terms: D020029:Base Pairing; D004277:DNA, Single-Stranded / Q000737:chemistry; D019281:Dimerization; D006046:Gold / Q000737:chemistry*; D007477:Ions / Q000737:chemistry*; D008628:Mercury / Q000032:analysis*; D049329:Nanostructures / Q000737:chemistry*; D009693:Nucleic Acid Hybridization; D013059:Spectrum Analysis, Raman; D013941:Thymine / Q000737:chemistry
chemical_list: D004277:DNA, Single-Stranded; D007477:Ions; D006046:Gold; D008628:Mercury; D013941:Thymine