Gelatin-Coated Magnetic Nanowires for High-Sensitivity Optical Labels


Por: Cuevas-Corona, M. Charbel, Lopez-Romero, J. Mauricio, Manzano-Ramirez, Alejandro, Esparza, Rodrigo, Zavala-Arce, Rosa E., Gimenez, Alejandro J., Luna-Barcenas, Gabriel

Publicada: 1 ene 2023
Resumen:
The encapsulation of magnetic nickel nanowires (NiNWs) with gelatin is proposed as an alternative for optical label detection. Magnetic nanowires can be detected at very low concentrations using light-scattering methods. This detection capacity could be helpful in applications such as transducers for molecular and biomolecular sensors; however, potential applications require the attachment of specific binding molecules to the nanowire structure. In the present study, a method is presented which is helpful in coating magnetic nanowires with gelatin, a material with the potential to handle specific decoration and functionalization of the nanowires; in the first case, silver nanoparticles (AgNPs) are efficiently used to decorate the nanowires. Furthermore, it is shown that the synthesized gelatin-coated particles have excellent detectability to the level of 140 pg/mL; this level of detection outperforms more complex techniques such as ICP-OES (similar to 3 ng/mL for Ni) and magnetoresistance sensing (similar to 10 ng/mL for magnetic nanoparticles).

Filiaciones:
Cuevas-Corona, M. Charbel:
 Cinvestav Queretaro, Ctr Res & Adv Studies, Natl Polytech Inst, Queretaro 76230, Mexico

Lopez-Romero, J. Mauricio:
 Cinvestav Queretaro, Ctr Res & Adv Studies, Natl Polytech Inst, Queretaro 76230, Mexico

Manzano-Ramirez, Alejandro:
 Cinvestav Queretaro, Ctr Res & Adv Studies, Natl Polytech Inst, Queretaro 76230, Mexico

Esparza, Rodrigo:
 UNAM, Ctr Fis Aplicada & Tecnol Avanzada, Queretaro 76230, Mexico

Zavala-Arce, Rosa E.:
 Tecnol Nacl Mexico, Natl Technol Inst Mexico, Inst Tecnol Toluca, Metepec 52149, Mexico

Gimenez, Alejandro J.:
 Cinvestav Queretaro, Ctr Res & Adv Studies, Natl Polytech Inst, Queretaro 76230, Mexico

Luna-Barcenas, Gabriel:
 Cinvestav Queretaro, Ctr Res & Adv Studies, Natl Polytech Inst, Queretaro 76230, Mexico
ISSN: 20794991





NANOMATERIALS
Editorial
MDPI AG, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND, Suiza
Tipo de documento: Article
Volumen: 13 Número: 1
Páginas:
WOS Id: 000909394000001
ID de PubMed: 36615923
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