abstract

• In this paper, we report a fast and easy method to detect histamine dihydrochloride using gold nanostars in colloidal aqueous solution as a highly active SERS platform with potential applications in biomedicine and food science. This colloid was characterized with SEM and UV–Vis spectroscopy. Also, numerical calculations were performed to estimate the plasmonic resonance and electric field amplification of the gold nanoparticles to compare the difference between nanospheres and nanostars. Finally, aqueous solutions of histamine dihydrochloride were prepared in a wide range of concentrations and the colloid was added to carry out SERS. We found SERS amplified the Raman signal of histamine by an enhancement factor of 1.0 × 107, demonstrating the capability of the method to detect low concentrations of this amine molecule. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.

authors

• Alda J.
• Cuadrado A.
• González Contreras Francisco Javier
• Hernández-Arteaga A.
• Kolosovas Machuca Eleazar Samuel
• Navarro Contreras Hugo Ricardo
• Ojeda-Galván H.J.
• Ortiz-Dosal L.C.
• Rodríguez Aranda Ma. del Carmen

publication date

• 2019-01-01

funding provided via

• Consejo Nacional de Ciencia y Tecnología, CONACYT  Grant

published in

• Nanomaterials  Journal

keywords

• Computational electromagnetism; Histamine; Nanophotonics; Nanostars; SERS

Digital Object Identifier (DOI)

• 10.3390/nano9020211

start page

end page

volume

• 9

issue

• 2