Disconnecting Symmetry Breaking from Seeded Growth for the Reproducible Synthesis of High Quality Gold Nanorods

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2019
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Kumar, Vished
Llombart, Pablo
Díaz-Núñez, Pablo
Bladt, Eva
Altantzis, Thomas
Bals, Sara
Peña-Rodríguez, Ovidio
Guerrero-Martínez, Andrés
Liz-Marzán, Luis M.
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ACS nano. ACS Publications. 2019, 13(4), pp. 4424-4435. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/acsnano.8b09658
Zusammenfassung

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.

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Fachgebiet (DDC)
540 Chemie
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gold nanorods, CTAB, n-decanol, symmetry breaking, seeded growth
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ISO 690GONZALEZ-RUBIO, Guillermo, Vished KUMAR, Pablo LLOMBART, Pablo DÍAZ-NÚÑEZ, Eva BLADT, Thomas ALTANTZIS, Sara BALS, Ovidio PEÑA-RODRÍGUEZ, Andrés GUERRERO-MARTÍNEZ, Luis M. LIZ-MARZÁN, 2019. Disconnecting Symmetry Breaking from Seeded Growth for the Reproducible Synthesis of High Quality Gold Nanorods. In: ACS nano. ACS Publications. 2019, 13(4), pp. 4424-4435. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/acsnano.8b09658
BibTex
@article{GonzalezRubio2019-04-23Disco-53440,
  year={2019},
  doi={10.1021/acsnano.8b09658},
  title={Disconnecting Symmetry Breaking from Seeded Growth for the Reproducible Synthesis of High Quality Gold Nanorods},
  number={4},
  volume={13},
  issn={1936-0851},
  journal={ACS nano},
  pages={4424--4435},
  author={Gonzalez-Rubio, Guillermo and Kumar, Vished and Llombart, Pablo and Díaz-Núñez, Pablo and Bladt, Eva and Altantzis, Thomas and Bals, Sara and Peña-Rodríguez, Ovidio and Guerrero-Martínez, Andrés and Liz-Marzán, Luis M.}
}
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