title: Surface-enhanced Raman scattering imaging of a single molecule on urchin-like silver nanowires.
abstract: Urchin-like silver nanowires are prepared by reacting AgNO(3)(aq) with copper metal in the presence of cetyltrimethylammonium chloride and HNO(3)(aq) on a screen-printed carbon electrode at room temperature. The diameters of the nanowires are about 100 nm, and their lengths are up to 10 μm. Using Raman spectroscopy, the detection limit of Rhodamine 6G (R6G) on the urchin-like silver nanowire substrate can be as low as 10(-16) M, while the analytical enhancement factor is about 10(13). Raman mapping images confirm that a single R6G molecule on the substrate can be detected.
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050, Republic of China.
authors.forename: Wei-Han
authors.initials: WH
authors.lastname: Hsiao
authors.forename: Hsin-Yu
authors.initials: HY
authors.lastname: Chen
authors.forename: Yu-Cheng
authors.initials: YC
authors.lastname: Yang
authors.forename: Yu-Liang
authors.initials: YL
authors.lastname: Chen
authors.forename: Chi-Young
authors.initials: CY
authors.lastname: Lee
authors.forename: Hsin-Tien
authors.initials: HT
authors.lastname: Chiu
mesh_terms: D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D012235:Rhodamines / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D012835:Silver Nitrate / Q000737:chemistry; D013059:Spectrum Analysis, Raman
chemical_list: D002593:Cetrimonium Compounds; D012235:Rhodamines; C026188:rhodamine 6G; D012834:Silver; D003300:Copper; D012835:Silver Nitrate; D000077286:Cetrimonium