Contributions of cationic and elemental gold on roughened gold substrates to surface-enhanced Raman scattering

Chung Chin Yu; Yu Chuan Liu

doi:10.1016/j.aca.2006.02.069

Contributions of cationic and elemental gold on roughened gold substrates to surface-enhanced Raman scattering

Chung Chin Yu, Yu Chuan Liu

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

10 Citations (Scopus)

Abstract

In this work, the contributions of cationic and elemental gold on roughened gold substrates to surface-enhanced Raman scattering (SERS) of polypyrrole (PPy) films were first investigated. First, a gold substrate was roughened by a triangular wave oxidation-reduction cycle (ORC) in an aqueous solution containing 0.1 M KCl. Then, the roughened gold substrate was further reduced by applying a cathodic potential for a fixed time to control the quantity of unreduced cationic Au on the roughened Au substrate. The result indicates that the content of cationic Au is responsible for the improved SERS of PPy electrodeposited on this roughened Au substrate. This phenomenon can be attributed to the interfacial charge transfer from PPy to the roughened Au substrate by the aid of cationic Au.

Original language	English
Pages (from-to)	130-135
Number of pages	6
Journal	Analytica Chimica Acta
Volume	566
Issue number	1
DOIs	https://doi.org/10.1016/j.aca.2006.02.069
Publication status	Published - Apr 27 2006
Externally published	Yes

Keywords

Cationic Au
Polypyrrole
Surface-enhanced Raman scattering

ASJC Scopus subject areas

Analytical Chemistry
Biochemistry
Spectroscopy
Environmental Chemistry

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10.1016/j.aca.2006.02.069

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abstract = "In this work, the contributions of cationic and elemental gold on roughened gold substrates to surface-enhanced Raman scattering (SERS) of polypyrrole (PPy) films were first investigated. First, a gold substrate was roughened by a triangular wave oxidation-reduction cycle (ORC) in an aqueous solution containing 0.1 M KCl. Then, the roughened gold substrate was further reduced by applying a cathodic potential for a fixed time to control the quantity of unreduced cationic Au on the roughened Au substrate. The result indicates that the content of cationic Au is responsible for the improved SERS of PPy electrodeposited on this roughened Au substrate. This phenomenon can be attributed to the interfacial charge transfer from PPy to the roughened Au substrate by the aid of cationic Au.",

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T1 - Contributions of cationic and elemental gold on roughened gold substrates to surface-enhanced Raman scattering

AU - Yu, Chung Chin

AU - Liu, Yu Chuan

PY - 2006/4/27

Y1 - 2006/4/27

N2 - In this work, the contributions of cationic and elemental gold on roughened gold substrates to surface-enhanced Raman scattering (SERS) of polypyrrole (PPy) films were first investigated. First, a gold substrate was roughened by a triangular wave oxidation-reduction cycle (ORC) in an aqueous solution containing 0.1 M KCl. Then, the roughened gold substrate was further reduced by applying a cathodic potential for a fixed time to control the quantity of unreduced cationic Au on the roughened Au substrate. The result indicates that the content of cationic Au is responsible for the improved SERS of PPy electrodeposited on this roughened Au substrate. This phenomenon can be attributed to the interfacial charge transfer from PPy to the roughened Au substrate by the aid of cationic Au.

AB - In this work, the contributions of cationic and elemental gold on roughened gold substrates to surface-enhanced Raman scattering (SERS) of polypyrrole (PPy) films were first investigated. First, a gold substrate was roughened by a triangular wave oxidation-reduction cycle (ORC) in an aqueous solution containing 0.1 M KCl. Then, the roughened gold substrate was further reduced by applying a cathodic potential for a fixed time to control the quantity of unreduced cationic Au on the roughened Au substrate. The result indicates that the content of cationic Au is responsible for the improved SERS of PPy electrodeposited on this roughened Au substrate. This phenomenon can be attributed to the interfacial charge transfer from PPy to the roughened Au substrate by the aid of cationic Au.

KW - Cationic Au

KW - Polypyrrole

KW - Surface-enhanced Raman scattering

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JO - Analytica Chimica Acta

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Contributions of cationic and elemental gold on roughened gold substrates to surface-enhanced Raman scattering

Abstract

Keywords

ASJC Scopus subject areas

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