Unravelling Thiol’s Role in Directing Asymmetric Growth of Au Nanorod–Au Nanoparticle Dimers
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Physical Sciences and Engineering (PSE) Division
Applied Mathematics and Computational Science Program
Electrical Engineering Program
PRIMALIGHT Research Group
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AbstractAsymmetric 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.
CitationHuang J, Zhu Y, Liu C, Shi Z, Fratalocchi A, et al. (2016) Unravelling Thiol’s Role in Directing Asymmetric Growth of Au Nanorod–Au Nanoparticle Dimers. Nano Lett 16: 617–623. Available: http://dx.doi.org/10.1021/acs.nanolett.5b04329.
SponsorsThis 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.
PublisherAmerican Chemical Society (ACS)
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