(AuAg)144(SR)60 alloy nanomolecules

Chanaka Kumara; Amala Dass

doi:10.1039/c1nr10429b

(AuAg)₁₄₄(SR)₆₀ alloy nanomolecules

Chanaka Kumara, Amala Dass

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

157 Scopus citations

Abstract

(Au-Ag)₁₄₄(SR)₆₀ alloy nanomolecules were synthesized and characterized by ESI mass spectrometry to atomic precision. The number of Ag atoms can be varied by changing the incoming metal ratio and plateaus at ∼60. UV-vis data demonstrates that the electronic structure of the nanomolecules can be tuned by incorporation of silver atoms. Based on the proposed 3-shell structure of Au₁₄₄(SR)₆₀, we hypothesize that the Ag atoms are selectively incorporated in to the symmetry equivalent 60-atom shell - having Au₁₂, Au₄₂, Ag₆₀ concentric shells with 30 -SR-Au-SR- protecting units.

Original language	English
Pages (from-to)	3064-3067
Number of pages	4
Journal	Nanoscale
Volume	3
Issue number	8
DOIs	https://doi.org/10.1039/c1nr10429b
State	Published - Aug 2011
Externally published	Yes

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title = "(AuAg)144(SR)60 alloy nanomolecules",

abstract = "(Au-Ag)144(SR)60 alloy nanomolecules were synthesized and characterized by ESI mass spectrometry to atomic precision. The number of Ag atoms can be varied by changing the incoming metal ratio and plateaus at ∼60. UV-vis data demonstrates that the electronic structure of the nanomolecules can be tuned by incorporation of silver atoms. Based on the proposed 3-shell structure of Au144(SR)60, we hypothesize that the Ag atoms are selectively incorporated in to the symmetry equivalent 60-atom shell - having Au12, Au42, Ag60 concentric shells with 30 -SR-Au-SR- protecting units.",

author = "Chanaka Kumara and Amala Dass",

year = "2011",

month = aug,

doi = "10.1039/c1nr10429b",

language = "English",

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publisher = "Royal Society of Chemistry",

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AU - Dass, Amala

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AB - (Au-Ag)144(SR)60 alloy nanomolecules were synthesized and characterized by ESI mass spectrometry to atomic precision. The number of Ag atoms can be varied by changing the incoming metal ratio and plateaus at ∼60. UV-vis data demonstrates that the electronic structure of the nanomolecules can be tuned by incorporation of silver atoms. Based on the proposed 3-shell structure of Au144(SR)60, we hypothesize that the Ag atoms are selectively incorporated in to the symmetry equivalent 60-atom shell - having Au12, Au42, Ag60 concentric shells with 30 -SR-Au-SR- protecting units.

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(AuAg)₁₄₄(SR)₆₀ alloy nanomolecules

Abstract

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