Triangular nanoframes made of gold and silver

Gabriella S. Métraux; Yunwei Charles Cao; Rongchao Jin; Chad A. Mirkin

doi:10.1021/nl034097+

Triangular nanoframes made of gold and silver

Gabriella S. Métraux, Yunwei Charles Cao, Rongchao Jin, Chad A. Mirkin^*

^*Corresponding author for this work

Chemistry

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

332 Scopus citations

Abstract

Silver nanoprisms (∼74-nm edge length) were etched with HAuCl ₄ to generate gold-silver alloy framework structures. Interestingly, these triangular nanoframes possess no strong surface plasmon bands in the ultraviolet or visible regions of the optical spectrum. By adding a mild reducing agent, L-ascorbic acid, gold and silver ions remaining in solution can be reduced, resulting in metal plating and reformation of nanoprisms. The extent of the back-filling process can be controlled, allowing one to form novel prisms with nanopores. This back-filling process is accompanied by a regeneration of the surface plasmon bands in the UV-vis spectrum.

Original language	English (US)
Pages (from-to)	519-522
Number of pages	4
Journal	Nano letters
Volume	3
Issue number	4
DOIs	https://doi.org/10.1021/nl034097+
State	Published - Apr 1 2003

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl034097+

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abstract = "Silver nanoprisms (∼74-nm edge length) were etched with HAuCl 4 to generate gold-silver alloy framework structures. Interestingly, these triangular nanoframes possess no strong surface plasmon bands in the ultraviolet or visible regions of the optical spectrum. By adding a mild reducing agent, L-ascorbic acid, gold and silver ions remaining in solution can be reduced, resulting in metal plating and reformation of nanoprisms. The extent of the back-filling process can be controlled, allowing one to form novel prisms with nanopores. This back-filling process is accompanied by a regeneration of the surface plasmon bands in the UV-vis spectrum.",

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AU - Cao, Yunwei Charles

AU - Jin, Rongchao

AU - Mirkin, Chad A.

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Y1 - 2003/4/1

N2 - Silver nanoprisms (∼74-nm edge length) were etched with HAuCl 4 to generate gold-silver alloy framework structures. Interestingly, these triangular nanoframes possess no strong surface plasmon bands in the ultraviolet or visible regions of the optical spectrum. By adding a mild reducing agent, L-ascorbic acid, gold and silver ions remaining in solution can be reduced, resulting in metal plating and reformation of nanoprisms. The extent of the back-filling process can be controlled, allowing one to form novel prisms with nanopores. This back-filling process is accompanied by a regeneration of the surface plasmon bands in the UV-vis spectrum.

AB - Silver nanoprisms (∼74-nm edge length) were etched with HAuCl 4 to generate gold-silver alloy framework structures. Interestingly, these triangular nanoframes possess no strong surface plasmon bands in the ultraviolet or visible regions of the optical spectrum. By adding a mild reducing agent, L-ascorbic acid, gold and silver ions remaining in solution can be reduced, resulting in metal plating and reformation of nanoprisms. The extent of the back-filling process can be controlled, allowing one to form novel prisms with nanopores. This back-filling process is accompanied by a regeneration of the surface plasmon bands in the UV-vis spectrum.

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Triangular nanoframes made of gold and silver

Abstract

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