Surface-enhanced Raman scattering imaging of a single molecule on urchin-like silver nanowires

Wei Han Hsiao; Hsin Yu Chen; Yu Cheng Yang; Yu Liang Chen; Chi Young Lee; Hsin Tien Chiu

doi:10.1021/am2007239

Surface-enhanced Raman scattering imaging of a single molecule on urchin-like silver nanowires

Wei Han Hsiao, Hsin Yu Chen, Yu Cheng Yang, Yu Liang Chen, Chi Young Lee, Hsin Tien Chiu^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

37 Scopus citations

Abstract

Urchin-like silver nanowires are prepared by reacting AgNO₃(aq) with copper metal in the presence of cetyltrimethylammonium chloride and HNO₃(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 10¹³. Raman mapping images confirm that a single R6G molecule on the substrate can be detected.

Original language	English
Pages (from-to)	3280-3284
Number of pages	5
Journal	ACS Applied Materials and Interfaces
Volume	3
Issue number	9
DOIs	https://doi.org/10.1021/am2007239
State	Published - 28 09 2011
Externally published	Yes

Keywords

Rhodamine 6G
galvanic reduction
silver nanowires
single-molecule detection
surface-enhanced Raman spectroscopy

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10.1021/am2007239

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abstract = "Urchin-like silver nanowires are prepared by reacting AgNO3(aq) with copper metal in the presence of cetyltrimethylammonium chloride and HNO3(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 1013. Raman mapping images confirm that a single R6G molecule on the substrate can be detected.",

keywords = "Rhodamine 6G, galvanic reduction, silver nanowires, single-molecule detection, surface-enhanced Raman spectroscopy",

author = "Hsiao, {Wei Han} and Chen, {Hsin Yu} and Yang, {Yu Cheng} and Chen, {Yu Liang} and Lee, {Chi Young} and Chiu, {Hsin Tien}",

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doi = "10.1021/am2007239",

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AU - Hsiao, Wei Han

AU - Chen, Hsin Yu

AU - Yang, Yu Cheng

AU - Chen, Yu Liang

AU - Lee, Chi Young

AU - Chiu, Hsin Tien

PY - 2011/9/28

Y1 - 2011/9/28

N2 - Urchin-like silver nanowires are prepared by reacting AgNO3(aq) with copper metal in the presence of cetyltrimethylammonium chloride and HNO3(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 1013. Raman mapping images confirm that a single R6G molecule on the substrate can be detected.

AB - Urchin-like silver nanowires are prepared by reacting AgNO3(aq) with copper metal in the presence of cetyltrimethylammonium chloride and HNO3(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 1013. Raman mapping images confirm that a single R6G molecule on the substrate can be detected.

KW - Rhodamine 6G

KW - galvanic reduction

KW - silver nanowires

KW - single-molecule detection

KW - surface-enhanced Raman spectroscopy

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JO - ACS Applied Materials and Interfaces

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Surface-enhanced Raman scattering imaging of a single molecule on urchin-like silver nanowires

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