Surface-Enhanced Raman Scattering of 4-Aminobenzenethiol on Au Nanorod Ordered Arrays
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- 作者：Alfonso Mart铆n ; Andrea Pescaglini ; Carola Schopf ; Vittorio Scardaci ; Richard Coull ; Lorraine Byrne ; Daniela Iacopino
- 刊名：Journal of Physical Chemistry C
- 出版年：2014
- 出版时间：June 19, 2014
- 年：2014
- 卷：118
- 期：24
- 页码：13260-13267
- 全文大小：501K
- 年卷期：v.118,no.24(June 19, 2014)
- ISSN：1932-7455
文摘
A droplet evaporation/stamping method was employed to fabricate closely packed arrays of Au nanorods aligned parallel or perpendicular to a support. The potential as SERS substrates was investigated using model molecule 4-aminobenzenethiol (4-ABT), for which enhanced signals where obtained compared to the signals of the bulk molecule. Enhancement factors of the order of 10<sup>4sup> and 10<sup>5sup> were calculated for parallel and perpendicular arrays, respectively. Quantitative Raman detection of 4-ABT was obtained with detection limits in the nM concentration range. Fabricated arrays displayed good stability and uniformity, showing their potential as sensing platforms for plasmon-induced optical molecular detection.