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
gold, Green Published
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