Detection of Histamine Dihydrochloride at Low Concentrations Using Raman Spectroscopy Enhanced by Gold Nanostars Colloids

Nanomaterials

Javier Alda¹  HiramJoazet Ojeda-Galván²  Mariadel Carmen Rodríguez-Aranda²  FranciscoJavier González²  EleazarSamuel Kolosovas-Machuca²  AidaCatalina Hernández-Arteaga²  HugoRicardo Navarro-Contreras²  Alexander Cuadrado²  LuisCarlos Ortiz-Dosal³ 

[1] Applied Optics Complutense Group, Faculty of Optics and Optometry, University Complutense of Madrid, Av. Arcos de Jalon, 118, 28037 Madrid, Spain;Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico;Doctorado Institucional en Ingeniería y Ciencias de Materiales, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico;

关键词: SERS;    histamine;    nanostars;    nanophotonics;    computational electromagnetism;   

DOI  :  10.3390/nano9020211

来源: DOAJ

【 摘 要 】

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 $1.0\times {10}^7$ , demonstrating the capability of the method to detect low concentrations of this amine molecule.

【 授权许可】

Unknown