Facile fabrication of gold nanoparticle arrays for efficient surface-enhanced Raman scattering

Yuling Wang; Hongjun Chen; Erkang Wang

doi:10.1088/0957-4484/19/10/105604

Facile fabrication of gold nanoparticle arrays for efficient surface-enhanced Raman scattering

Yuling Wang, Hongjun Chen, Erkang Wang^*

^*Corresponding author for this work

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

31 Citations (Scopus)

Abstract

An effective and facile method for the fabrication of a surface-enhanced Raman scattering (SERS)-active film with closely packed gold nanoparticle (AuNP) arrays is proposed by self-assembly of different sizes (16, 25, 40 and 70 nm) of AuNPs at a toluene/water interface with ethanol as the inducer. The as-prepared AuNP arrays exhibit efficient Raman scattering enhancement, and the enhancement factors estimated using p-aminothiophenol as a probe molecule range from 10⁵ to 10⁷. This is attributed to the coupling electromagnetic SERS enhancement mechanism with additional localization field within closely packed AuNPs, which have greater SERS activity and reproducibility than that on aggregates and on self-assembled monolayers of isolated AuNPs on glass.

Original language	English
Article number	105604
Pages (from-to)	1-5
Number of pages	5
Journal	Nanotechnology
Volume	19
Issue number	10
DOIs	https://doi.org/10.1088/0957-4484/19/10/105604
Publication status	Published - 12 Mar 2008
Externally published	Yes

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AB - An effective and facile method for the fabrication of a surface-enhanced Raman scattering (SERS)-active film with closely packed gold nanoparticle (AuNP) arrays is proposed by self-assembly of different sizes (16, 25, 40 and 70 nm) of AuNPs at a toluene/water interface with ethanol as the inducer. The as-prepared AuNP arrays exhibit efficient Raman scattering enhancement, and the enhancement factors estimated using p-aminothiophenol as a probe molecule range from 105 to 107. This is attributed to the coupling electromagnetic SERS enhancement mechanism with additional localization field within closely packed AuNPs, which have greater SERS activity and reproducibility than that on aggregates and on self-assembled monolayers of isolated AuNPs on glass.

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Facile fabrication of gold nanoparticle arrays for efficient surface-enhanced Raman scattering

Abstract

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