Synthesis and Vertical Self-Assembly of Gold Nanorods for Surface Enhanced Raman Scattering

In this work, an improved method using hexadecyltrimethylammonium bromide (CTAB) and potassium (KOL) as a surfactant mixture was investigated for colloidal gold nanorods (AuNRs) synthesis. This method allows to overcome the limitations in tunability and uniformity of gold nanorods dimensions and red...

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Bibliographic Details
Published in:Journal of electronic materials 2019-08, Vol.48 (8), p.4970-4976
Main Authors: Nguyen, Mai T. T., Nguyen, Dong H., Pham, My T., Pham, Hai V., Huynh, Chinh D.
Format: Article
Language:English
Subjects:
Ascorbic acid
Cetyltrimethylammonium bromide
Characterization and Evaluation of Materials
Chemistry and Materials Science
Electronics and Microelectronics
Gold
Instrumentation
Materials Science
Nanorods
Optical and Electronic Materials
Raman spectra
Self-assembly
Silicon substrates
Solid State Physics
Synthesis
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Summary:In this work, an improved method using hexadecyltrimethylammonium bromide (CTAB) and potassium (KOL) as a surfactant mixture was investigated for colloidal gold nanorods (AuNRs) synthesis. This method allows to overcome the limitations in tunability and uniformity of gold nanorods dimensions and reduce the concentration of CTAB and ascorbic acid using in the nanorods growth step compared to the conventional methods in the literature. Furthermore, a vertical self-assemble AuNRs on a Si substrate was produced for surface enhanced Raman scattering application, which can act as an extended nanoantenna.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-019-07296-2