Large-scale self-assembly and stretch-induced plasmonic properties of core-shell metal nanoparticle superlattice sheets

Pengzhen Guo, Debabrata Sikdar, Xiqiang Huang, Kae Jye Si, Bin Su, Yi Chen, Wei Xiong, Lim Wei Yap, Malin Premaratne, Wenlong Cheng

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We report on a facile interfacial self-assembly approach to fabricate large-scale metal nanoparticle superlattice sheets from nonspherical core-shell nanoparticles, which exhibited reversible plasmonic responses to repeated mechanical stretching. Monodisperse Au@Ag nanocubes (NCs) and Au@Ag nanocuboids (NBs) could be induced to self-assembly at the hexane/water interface, forming uniform superlattices up to at least 13 cm2 and giving rise to mirror-like reflection. Such large-area mirror-like superlattice sheets exhibited reversible plasmonic responses to external mechanical strains. Under stretching, the dominant plasmonic resonance peak for both NB and NC superlattice sheets shifted to blue, following a power-law function of the applied strain. Interestingly, the power-law exponent (or the decay rate) showed a strong shape dependence, where a faster rate was observed for NB superlattice sheets than that for NC superlattice sheets.
Original languageEnglish
Pages (from-to)26816 - 26824
Number of pages9
JournalJournal of Physical Chemistry C
Volume118
Issue number46
DOIs
Publication statusPublished - 2014

Cite this

Guo, Pengzhen ; Sikdar, Debabrata ; Huang, Xiqiang ; Si, Kae Jye ; Su, Bin ; Chen, Yi ; Xiong, Wei ; Yap, Lim Wei ; Premaratne, Malin ; Cheng, Wenlong. / Large-scale self-assembly and stretch-induced plasmonic properties of core-shell metal nanoparticle superlattice sheets. In: Journal of Physical Chemistry C. 2014 ; Vol. 118, No. 46. pp. 26816 - 26824.
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title = "Large-scale self-assembly and stretch-induced plasmonic properties of core-shell metal nanoparticle superlattice sheets",
abstract = "We report on a facile interfacial self-assembly approach to fabricate large-scale metal nanoparticle superlattice sheets from nonspherical core-shell nanoparticles, which exhibited reversible plasmonic responses to repeated mechanical stretching. Monodisperse Au@Ag nanocubes (NCs) and Au@Ag nanocuboids (NBs) could be induced to self-assembly at the hexane/water interface, forming uniform superlattices up to at least 13 cm2 and giving rise to mirror-like reflection. Such large-area mirror-like superlattice sheets exhibited reversible plasmonic responses to external mechanical strains. Under stretching, the dominant plasmonic resonance peak for both NB and NC superlattice sheets shifted to blue, following a power-law function of the applied strain. Interestingly, the power-law exponent (or the decay rate) showed a strong shape dependence, where a faster rate was observed for NB superlattice sheets than that for NC superlattice sheets.",
author = "Pengzhen Guo and Debabrata Sikdar and Xiqiang Huang and Si, {Kae Jye} and Bin Su and Yi Chen and Wei Xiong and Yap, {Lim Wei} and Malin Premaratne and Wenlong Cheng",
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doi = "10.1021/jp508108a",
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volume = "118",
pages = "26816 -- 26824",
journal = "Journal of Physical Chemistry C",
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publisher = "American Chemical Society",
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Large-scale self-assembly and stretch-induced plasmonic properties of core-shell metal nanoparticle superlattice sheets. / Guo, Pengzhen; Sikdar, Debabrata; Huang, Xiqiang; Si, Kae Jye; Su, Bin; Chen, Yi; Xiong, Wei; Yap, Lim Wei; Premaratne, Malin; Cheng, Wenlong.

In: Journal of Physical Chemistry C, Vol. 118, No. 46, 2014, p. 26816 - 26824.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Guo, Pengzhen

AU - Sikdar, Debabrata

AU - Huang, Xiqiang

AU - Si, Kae Jye

AU - Su, Bin

AU - Chen, Yi

AU - Xiong, Wei

AU - Yap, Lim Wei

AU - Premaratne, Malin

AU - Cheng, Wenlong

PY - 2014

Y1 - 2014

N2 - We report on a facile interfacial self-assembly approach to fabricate large-scale metal nanoparticle superlattice sheets from nonspherical core-shell nanoparticles, which exhibited reversible plasmonic responses to repeated mechanical stretching. Monodisperse Au@Ag nanocubes (NCs) and Au@Ag nanocuboids (NBs) could be induced to self-assembly at the hexane/water interface, forming uniform superlattices up to at least 13 cm2 and giving rise to mirror-like reflection. Such large-area mirror-like superlattice sheets exhibited reversible plasmonic responses to external mechanical strains. Under stretching, the dominant plasmonic resonance peak for both NB and NC superlattice sheets shifted to blue, following a power-law function of the applied strain. Interestingly, the power-law exponent (or the decay rate) showed a strong shape dependence, where a faster rate was observed for NB superlattice sheets than that for NC superlattice sheets.

AB - We report on a facile interfacial self-assembly approach to fabricate large-scale metal nanoparticle superlattice sheets from nonspherical core-shell nanoparticles, which exhibited reversible plasmonic responses to repeated mechanical stretching. Monodisperse Au@Ag nanocubes (NCs) and Au@Ag nanocuboids (NBs) could be induced to self-assembly at the hexane/water interface, forming uniform superlattices up to at least 13 cm2 and giving rise to mirror-like reflection. Such large-area mirror-like superlattice sheets exhibited reversible plasmonic responses to external mechanical strains. Under stretching, the dominant plasmonic resonance peak for both NB and NC superlattice sheets shifted to blue, following a power-law function of the applied strain. Interestingly, the power-law exponent (or the decay rate) showed a strong shape dependence, where a faster rate was observed for NB superlattice sheets than that for NC superlattice sheets.

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