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Synthesis of Colloidal Gold Nanorods with Plasmon Absorbance Wavelength in the Near Infrared Region

Published online by Cambridge University Press:  28 June 2016

Luis M. Angelats-Silva ,
David Asmat-Campos ,
Henry León-León ,
Kevin A. Wilkinson ,
Daniel A. Sánchez-Vaca  and
Alcides López-Milla
Luis M. Angelats-Silva*
Affiliation:
Multidisciplinary Research Laboratory, Universidad Privada Antenor Orrego, Trujillo-Perú.
David Asmat-Campos
Affiliation:
Multidisciplinary Research Laboratory, Universidad Privada Antenor Orrego, Trujillo-Perú.
Henry León-León
Affiliation:
Multidisciplinary Research Laboratory, Universidad Privada Antenor Orrego, Trujillo-Perú.
Kevin A. Wilkinson
Affiliation:
Multidisciplinary Research Laboratory, Universidad Privada Antenor Orrego, Trujillo-Perú.
Daniel A. Sánchez-Vaca
Affiliation:
Department of Agro Industry, Universidad Nacional del Santa, Nuevo Chimbote – Perú.
Alcides López-Milla
Affiliation:
Faculty of Sciences, Universidad Nacional de Ingeniería, Lima – Perú
*
*(Email: [email protected])
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Abstract

We report preparation and characterization of colloidal gold nanorods (AuNR) with plasmon absorbance over 950 nm and an aspect ratio of 7.2 by tuning silver nitrate concentration and the CTAB/BDAC ratio during growth. Samples were analyzed by scanning transmission electron microscopy, X-ray diffraction, UV-vis absorption spectroscopy and measurement of zeta potential. Addition of 170 μM silver nitrate to the CTAB-containing reaction mixture allowed preparation of AuNRs with a maximum absorbance peak at 941.8 nm and a yield around 96%. Optimization of the BDAC/CTAB ratio allowed for a further redshift of the absorbance maximum to 954.0 nm, but with poorer yields.

Keywords

Auchemical synthesiscolloid
Type
Articles
Information
MRS Advances , Volume 1 , Issue 30: Nanotechnology , 2016 , pp. 2181 - 2186
Copyright
Copyright © Materials Research Society 2016 

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References

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