Unravelling Thiol’s Role in Directing Asymmetric Growth of Au Nanorod–Au Nanoparticle Dimers

Jianfeng Huang; Yihan Zhu; Changxu Liu; Zhan Shi; Andrea Fratalocchi; Yu Han

doi:10.1021/acs.nanolett.5b04329

Unravelling Thiol’s Role in Directing Asymmetric Growth of Au Nanorod–Au Nanoparticle Dimers

Jianfeng Huang, Yihan Zhu, Changxu Liu, Zhan Shi, Andrea Fratalocchi, Yu Han

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61 Scopus citations

Abstract

Asymmetric nanocrystals have practical significance in nanotechnologies but present fundamental synthetic challenges. Thiol ligands have proven effective in breaking the symmetric growth of metallic nanocrystals but their exact roles in the synthesis remain elusive. Here, we synthesized an unprecedented Au nanorod-Au nanoparticle (AuNR-AuNP) dimer structure with the assistance of a thiol ligand. On the basis of our experimental observations, we unraveled for the first time that the thiol could cause an inhomogeneous distribution of surface strains on the seed crystals as well as a modulated reduction rate of metal precursors, which jointly induced the asymmetric growth of monometallic dimers. © 2015 American Chemical Society.

Original language	English (US)
Pages (from-to)	617-623
Number of pages	7
Journal	Nano Letters
Volume	16
Issue number	1
DOIs	https://doi.org/10.1021/acs.nanolett.5b04329
State	Published - Dec 17 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was supported by baseline research funds and competitive research funds (FCC/1/1972-03-01) to Y. H. from King Abdullah University of Science and Technology.

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10.1021/acs.nanolett.5b04329

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title = "Unravelling Thiol{\textquoteright}s Role in Directing Asymmetric Growth of Au Nanorod–Au Nanoparticle Dimers",

abstract = "Asymmetric nanocrystals have practical significance in nanotechnologies but present fundamental synthetic challenges. Thiol ligands have proven effective in breaking the symmetric growth of metallic nanocrystals but their exact roles in the synthesis remain elusive. Here, we synthesized an unprecedented Au nanorod-Au nanoparticle (AuNR-AuNP) dimer structure with the assistance of a thiol ligand. On the basis of our experimental observations, we unraveled for the first time that the thiol could cause an inhomogeneous distribution of surface strains on the seed crystals as well as a modulated reduction rate of metal precursors, which jointly induced the asymmetric growth of monometallic dimers. {\textcopyright} 2015 American Chemical Society.",

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note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was supported by baseline research funds and competitive research funds (FCC/1/1972-03-01) to Y. H. from King Abdullah University of Science and Technology.",

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AU - Huang, Jianfeng

AU - Zhu, Yihan

AU - Liu, Changxu

AU - Shi, Zhan

AU - Fratalocchi, Andrea

AU - Han, Yu

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was supported by baseline research funds and competitive research funds (FCC/1/1972-03-01) to Y. H. from King Abdullah University of Science and Technology.

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Y1 - 2015/12/17

N2 - Asymmetric nanocrystals have practical significance in nanotechnologies but present fundamental synthetic challenges. Thiol ligands have proven effective in breaking the symmetric growth of metallic nanocrystals but their exact roles in the synthesis remain elusive. Here, we synthesized an unprecedented Au nanorod-Au nanoparticle (AuNR-AuNP) dimer structure with the assistance of a thiol ligand. On the basis of our experimental observations, we unraveled for the first time that the thiol could cause an inhomogeneous distribution of surface strains on the seed crystals as well as a modulated reduction rate of metal precursors, which jointly induced the asymmetric growth of monometallic dimers. © 2015 American Chemical Society.

AB - Asymmetric nanocrystals have practical significance in nanotechnologies but present fundamental synthetic challenges. Thiol ligands have proven effective in breaking the symmetric growth of metallic nanocrystals but their exact roles in the synthesis remain elusive. Here, we synthesized an unprecedented Au nanorod-Au nanoparticle (AuNR-AuNP) dimer structure with the assistance of a thiol ligand. On the basis of our experimental observations, we unraveled for the first time that the thiol could cause an inhomogeneous distribution of surface strains on the seed crystals as well as a modulated reduction rate of metal precursors, which jointly induced the asymmetric growth of monometallic dimers. © 2015 American Chemical Society.

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Unravelling Thiol’s Role in Directing Asymmetric Growth of Au Nanorod–Au Nanoparticle Dimers

Abstract

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