Atomically Precise Nanocluster Assemblies Encapsulating Plasmonic Gold Nanorods

Amrita Chakraborty; Ann Candice Fernandez; Anirban Som; Biswajit Mondal; Ganapati Natarajan; Ganesan Paramasivam; Tanja Lahtinen; Hannu Häkkinen; Nonappa Nonappa; Thalappil Pradeep

doi:10.1002/anie.201802420

Atomically Precise Nanocluster Assemblies Encapsulating Plasmonic Gold Nanorods

Amrita Chakraborty, Ann Candice Fernandez, Anirban Som, Biswajit Mondal, Ganapati Natarajan, Ganesan Paramasivam, Tanja Lahtinen, Hannu Häkkinen, Nonappa, Thalappil Pradeep

Research output: Contribution to journal › Article › Scientific › peer-review

23 Citations (Scopus)

Abstract

The self-assembled structures of atomically precise, ligand-protected noble metal nanoclusters leading to encapsulation of plasmonic gold nanorods (GNRs) is presented. Unlike highly sophisticated DNA nanotechnology, this strategically simple hydrogen bonding-directed self-assembly of nanoclusters leads to octahedral nanocrystals encapsulating GNRs. Specifically, the p-mercaptobenzoic acid (pMBA)-protected atomically precise silver nanocluster, Na₄[Ag₄₄(pMBA)₃₀], and pMBA-functionalized GNRs were used. High-resolution transmission and scanning transmission electron tomographic reconstructions suggest that the geometry of the GNR surface is responsible for directing the assembly of silver nanoclusters via H-bonding, leading to octahedral symmetry. The use of water-dispersible gold nanoclusters, Au_≈250(pMBA)_n and Au₁₀₂(pMBA)₄₄, also formed layered shells encapsulating GNRs. Such cluster assemblies on colloidal particles are a new category of precision hybrids with diverse possibilities.

Original language	English
Pages (from-to)	6522-6526
Journal	Angewandte Chemie - International Edition
Volume	57
Issue number	22
Early online date	1 Jan 2018
DOIs	https://doi.org/10.1002/anie.201802420
Publication status	Published - May 2018
MoE publication type	A1 Journal article-refereed

Keywords

Atomically precise nanoclusters
Hydrogen bonding
Plasmonic gold nanorods
Self-assembly
Supramolecular chemistry

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10.1002/anie.201802420

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Cite this

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title = "Atomically Precise Nanocluster Assemblies Encapsulating Plasmonic Gold Nanorods",

abstract = "The self-assembled structures of atomically precise, ligand-protected noble metal nanoclusters leading to encapsulation of plasmonic gold nanorods (GNRs) is presented. Unlike highly sophisticated DNA nanotechnology, this strategically simple hydrogen bonding-directed self-assembly of nanoclusters leads to octahedral nanocrystals encapsulating GNRs. Specifically, the p-mercaptobenzoic acid (pMBA)-protected atomically precise silver nanocluster, Na4[Ag44(pMBA)30], and pMBA-functionalized GNRs were used. High-resolution transmission and scanning transmission electron tomographic reconstructions suggest that the geometry of the GNR surface is responsible for directing the assembly of silver nanoclusters via H-bonding, leading to octahedral symmetry. The use of water-dispersible gold nanoclusters, Au≈250(pMBA)n and Au102(pMBA)44, also formed layered shells encapsulating GNRs. Such cluster assemblies on colloidal particles are a new category of precision hybrids with diverse possibilities.",

keywords = "Atomically precise nanoclusters, Hydrogen bonding, Plasmonic gold nanorods, Self-assembly, Supramolecular chemistry",

author = "Amrita Chakraborty and Fernandez, {Ann Candice} and Anirban Som and Biswajit Mondal and Ganapati Natarajan and Ganesan Paramasivam and Tanja Lahtinen and Hannu H{\"a}kkinen and Nonappa and Thalappil Pradeep",

year = "2018",

month = may,

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language = "English",

volume = "57",

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journal = "Angewandte Chemie",

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Atomically Precise Nanocluster Assemblies Encapsulating Plasmonic Gold Nanorods. / Chakraborty, Amrita; Fernandez, Ann Candice; Som, Anirban; Mondal, Biswajit; Natarajan, Ganapati; Paramasivam, Ganesan; Lahtinen, Tanja; Häkkinen, Hannu; Nonappa; Pradeep, Thalappil.

In: Angewandte Chemie - International Edition, Vol. 57, No. 22, 05.2018, p. 6522-6526.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Atomically Precise Nanocluster Assemblies Encapsulating Plasmonic Gold Nanorods

AU - Chakraborty, Amrita

AU - Fernandez, Ann Candice

AU - Som, Anirban

AU - Mondal, Biswajit

AU - Natarajan, Ganapati

AU - Paramasivam, Ganesan

AU - Lahtinen, Tanja

AU - Häkkinen, Hannu

AU - Nonappa, null

AU - Pradeep, Thalappil

PY - 2018/5

Y1 - 2018/5

N2 - The self-assembled structures of atomically precise, ligand-protected noble metal nanoclusters leading to encapsulation of plasmonic gold nanorods (GNRs) is presented. Unlike highly sophisticated DNA nanotechnology, this strategically simple hydrogen bonding-directed self-assembly of nanoclusters leads to octahedral nanocrystals encapsulating GNRs. Specifically, the p-mercaptobenzoic acid (pMBA)-protected atomically precise silver nanocluster, Na4[Ag44(pMBA)30], and pMBA-functionalized GNRs were used. High-resolution transmission and scanning transmission electron tomographic reconstructions suggest that the geometry of the GNR surface is responsible for directing the assembly of silver nanoclusters via H-bonding, leading to octahedral symmetry. The use of water-dispersible gold nanoclusters, Au≈250(pMBA)n and Au102(pMBA)44, also formed layered shells encapsulating GNRs. Such cluster assemblies on colloidal particles are a new category of precision hybrids with diverse possibilities.

AB - The self-assembled structures of atomically precise, ligand-protected noble metal nanoclusters leading to encapsulation of plasmonic gold nanorods (GNRs) is presented. Unlike highly sophisticated DNA nanotechnology, this strategically simple hydrogen bonding-directed self-assembly of nanoclusters leads to octahedral nanocrystals encapsulating GNRs. Specifically, the p-mercaptobenzoic acid (pMBA)-protected atomically precise silver nanocluster, Na4[Ag44(pMBA)30], and pMBA-functionalized GNRs were used. High-resolution transmission and scanning transmission electron tomographic reconstructions suggest that the geometry of the GNR surface is responsible for directing the assembly of silver nanoclusters via H-bonding, leading to octahedral symmetry. The use of water-dispersible gold nanoclusters, Au≈250(pMBA)n and Au102(pMBA)44, also formed layered shells encapsulating GNRs. Such cluster assemblies on colloidal particles are a new category of precision hybrids with diverse possibilities.

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Atomically Precise Nanocluster Assemblies Encapsulating Plasmonic Gold Nanorods

Abstract

Keywords

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