Disconnecting Symmetry Breaking from Seeded Growth for the Reproducible Synthesis of High Quality Gold Nanorods
Por:
González-Rubio G., Kumar V., Llombart P., Díaz-Núñez P., Bladt E., Altantzis T., Bals S., Peña-Rodríguez O., Noya E.G., Macdowell L.G., Guerrero-Martínez A., Liz-Marzán L.M.
Publicada:
1 ene 2019
Resumen:
One of the major difficulties hindering the widespread application of colloidal anisotropic plasmonic nanoparticles is the limited robustness and reproducibility of multistep synthetic methods. We demonstrate herein that the reproducibility and reliability of colloidal gold nanorod (AuNR) synthesis can be greatly improved by disconnecting the symmetry-breaking event from the seeded growth process. We have used a modified silver-assisted seeded growth method in the presence of the surfactant hexadecyltrimethylammonium bromide and n-decanol as a co-surfactant to prepare small AuNRs in high yield, which were then used as seeds for the growth of high quality AuNR colloids. Whereas the use of n-decanol provides a more-rigid micellar system, the growth on anisotropic seeds avoids sources of irreproducibility during the symmetry breaking step, yielding uniform AuNR colloids with narrow plasmon bands, ranging from 600 to 1270 nm, and allowing the fine-tuning of the final dimensions. This method provides a robust route for the preparation of high quality AuNR colloids with tunable morphology, size, and optical response in a reproducible and scalable manner. Copyright © 2019 American Chemical Society.
Filiaciones:
González-Rubio G.:
CIC BiomaGUNE/CIBER-BBN, Paseo de Miramón 182, Donostia-San Sebastián, 20014, Spain
Departamento de Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
Kumar V.:
CIC BiomaGUNE/CIBER-BBN, Paseo de Miramón 182, Donostia-San Sebastián, 20014, Spain
Llombart P.:
Departamento de Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
Instituto de Química Física Rocasolano, CSIC, Calle Serrano 119, Madrid, E-28006, Spain
Díaz-Núñez P.:
Instituto de Fusión Nuclear, Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, Madrid, E-28006, Spain
Bladt E.:
EMAT-University of Antwerp, Groenenborgerlaan 171, Antwerp, B-2020, Belgium
Altantzis T.:
EMAT-University of Antwerp, Groenenborgerlaan 171, Antwerp, B-2020, Belgium
Bals S.:
EMAT-University of Antwerp, Groenenborgerlaan 171, Antwerp, B-2020, Belgium
Peña-Rodríguez O.:
Instituto de Fusión Nuclear, Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, Madrid, E-28006, Spain
Noya E.G.:
Instituto de Química Física Rocasolano, CSIC, Calle Serrano 119, Madrid, E-28006, Spain
Macdowell L.G.:
Departamento de Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
Guerrero-Martínez A.:
Departamento de Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
Liz-Marzán L.M.:
CIC BiomaGUNE/CIBER-BBN, Paseo de Miramón 182, Donostia-San Sebastián, 20014, Spain
Ikerbasque (Basque Foundation for Science), Bilbao, 48013, Spain
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