Enhancements in intensity and thermal stability of Raman spectra based on roughened gold substrates modified by underpotential deposition of silver

Yu Chuan Liu; Kuang Hsuan Yang; Ting C. Hsu

doi:10.1002/jrs.2196

Enhancements in intensity and thermal stability of Raman spectra based on roughened gold substrates modified by underpotential deposition of silver

Yu Chuan Liu, Kuang Hsuan Yang, Ting C. Hsu

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

16 Citations (Scopus)

Abstract

In this study, electrochemically roughened gold is modified with underpotential deposition (UPD) silver to investigate the effects on enhancements in the intensity and the thermal stability of surface-enhanced Raman scattering (SERS). The SERS of Rhodamine 6G (R6G) adsorbed on the UPD Ag-modified Au substrate exhibits a higher intensity by six-fold of magnitude, as compared with that of R6G adsorbedon the unmodified Au substrate. Moreover, the SERS enhancement capabilities of UPD Ag-modified Au and unmodified Au substrates are seriously depressed at temperatures higher than 200 and 150°C, respectively. It indicates that the modification of UPD Ag can significantly depress the thermal destruction of SERS-active substrates.

Original language	English
Pages (from-to)	903-907
Number of pages	5
Journal	Journal of Raman Spectroscopy
Volume	40
Issue number	8
DOIs	https://doi.org/10.1002/jrs.2196
Publication status	Published - Aug 2009
Externally published	Yes

Keywords

Electrochemical methods
Surface-enhanced Raman scattering
Underpotential deposition silver

ASJC Scopus subject areas

Spectroscopy
Materials Science(all)

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10.1002/jrs.2196

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title = "Enhancements in intensity and thermal stability of Raman spectra based on roughened gold substrates modified by underpotential deposition of silver",

abstract = "In this study, electrochemically roughened gold is modified with underpotential deposition (UPD) silver to investigate the effects on enhancements in the intensity and the thermal stability of surface-enhanced Raman scattering (SERS). The SERS of Rhodamine 6G (R6G) adsorbed on the UPD Ag-modified Au substrate exhibits a higher intensity by six-fold of magnitude, as compared with that of R6G adsorbedon the unmodified Au substrate. Moreover, the SERS enhancement capabilities of UPD Ag-modified Au and unmodified Au substrates are seriously depressed at temperatures higher than 200 and 150°C, respectively. It indicates that the modification of UPD Ag can significantly depress the thermal destruction of SERS-active substrates.",

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T1 - Enhancements in intensity and thermal stability of Raman spectra based on roughened gold substrates modified by underpotential deposition of silver

AU - Liu, Yu Chuan

AU - Yang, Kuang Hsuan

AU - Hsu, Ting C.

PY - 2009/8

Y1 - 2009/8

N2 - In this study, electrochemically roughened gold is modified with underpotential deposition (UPD) silver to investigate the effects on enhancements in the intensity and the thermal stability of surface-enhanced Raman scattering (SERS). The SERS of Rhodamine 6G (R6G) adsorbed on the UPD Ag-modified Au substrate exhibits a higher intensity by six-fold of magnitude, as compared with that of R6G adsorbedon the unmodified Au substrate. Moreover, the SERS enhancement capabilities of UPD Ag-modified Au and unmodified Au substrates are seriously depressed at temperatures higher than 200 and 150°C, respectively. It indicates that the modification of UPD Ag can significantly depress the thermal destruction of SERS-active substrates.

AB - In this study, electrochemically roughened gold is modified with underpotential deposition (UPD) silver to investigate the effects on enhancements in the intensity and the thermal stability of surface-enhanced Raman scattering (SERS). The SERS of Rhodamine 6G (R6G) adsorbed on the UPD Ag-modified Au substrate exhibits a higher intensity by six-fold of magnitude, as compared with that of R6G adsorbedon the unmodified Au substrate. Moreover, the SERS enhancement capabilities of UPD Ag-modified Au and unmodified Au substrates are seriously depressed at temperatures higher than 200 and 150°C, respectively. It indicates that the modification of UPD Ag can significantly depress the thermal destruction of SERS-active substrates.

KW - Electrochemical methods

KW - Surface-enhanced Raman scattering

KW - Underpotential deposition silver

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Enhancements in intensity and thermal stability of Raman spectra based on roughened gold substrates modified by underpotential deposition of silver

Abstract

Keywords

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