Ag44(SR)304-: A silver-thiolate superatom complex

Kellen M. Harkness; Yun Tang; Amala Dass; Jun Pan; Nuwan Kothalawala; Vijay J. Reddy; David E. Cliffel; Borries Demeler; Francesco Stellacci; Osman M. Bakr; John A. McLean

doi:10.1039/c2nr30773a

Ag₄₄(SR)₃₀^4-: A silver-thiolate superatom complex

Kellen M. Harkness, Yun Tang, Amala Dass, Jun Pan, Nuwan Kothalawala, Vijay J. Reddy, David E. Cliffel, Borries Demeler, Francesco Stellacci, Osman M. Bakr, John A. McLean

Chemistry

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150 Scopus citations

Abstract

Intensely and broadly absorbing nanoparticles (IBANs) of silver protected by arylthiolates were recently synthesized and showed unique optical properties, yet question of their dispersity and their molecular formulas remained. Here IBANs are identified as a superatom complex with a molecular formula of Ag ₄₄(SR)₃₀^4- and an electron count of 18. This molecular character is shared by IBANs protected by 4-fluorothiophenol or 2-naphthalenethiol. The molecular formula and purity is determined by mass spectrometry and confirmed by sedimentation velocity-analytical ultracentrifugation. The data also give preliminary indications of a unique structure and environment for Ag₄₄(SR)₃₀^4-.

Original language	English
Pages (from-to)	4269-4274
Number of pages	6
Journal	Nanoscale
Volume	4
Issue number	14
DOIs	https://doi.org/10.1039/c2nr30773a
State	Published - Jul 21 2012

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title = "Ag44(SR)304-: A silver-thiolate superatom complex",

abstract = "Intensely and broadly absorbing nanoparticles (IBANs) of silver protected by arylthiolates were recently synthesized and showed unique optical properties, yet question of their dispersity and their molecular formulas remained. Here IBANs are identified as a superatom complex with a molecular formula of Ag 44(SR)304- and an electron count of 18. This molecular character is shared by IBANs protected by 4-fluorothiophenol or 2-naphthalenethiol. The molecular formula and purity is determined by mass spectrometry and confirmed by sedimentation velocity-analytical ultracentrifugation. The data also give preliminary indications of a unique structure and environment for Ag44(SR)304-.",

author = "Harkness, {Kellen M.} and Yun Tang and Amala Dass and Jun Pan and Nuwan Kothalawala and Reddy, {Vijay J.} and Cliffel, {David E.} and Borries Demeler and Francesco Stellacci and Bakr, {Osman M.} and McLean, {John A.}",

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doi = "10.1039/c2nr30773a",

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T1 - Ag44(SR)304-

T2 - A silver-thiolate superatom complex

AU - Harkness, Kellen M.

AU - Tang, Yun

AU - Dass, Amala

AU - Pan, Jun

AU - Kothalawala, Nuwan

AU - Reddy, Vijay J.

AU - Cliffel, David E.

AU - Demeler, Borries

AU - Stellacci, Francesco

AU - Bakr, Osman M.

AU - McLean, John A.

PY - 2012/7/21

Y1 - 2012/7/21

N2 - Intensely and broadly absorbing nanoparticles (IBANs) of silver protected by arylthiolates were recently synthesized and showed unique optical properties, yet question of their dispersity and their molecular formulas remained. Here IBANs are identified as a superatom complex with a molecular formula of Ag 44(SR)304- and an electron count of 18. This molecular character is shared by IBANs protected by 4-fluorothiophenol or 2-naphthalenethiol. The molecular formula and purity is determined by mass spectrometry and confirmed by sedimentation velocity-analytical ultracentrifugation. The data also give preliminary indications of a unique structure and environment for Ag44(SR)304-.

AB - Intensely and broadly absorbing nanoparticles (IBANs) of silver protected by arylthiolates were recently synthesized and showed unique optical properties, yet question of their dispersity and their molecular formulas remained. Here IBANs are identified as a superatom complex with a molecular formula of Ag 44(SR)304- and an electron count of 18. This molecular character is shared by IBANs protected by 4-fluorothiophenol or 2-naphthalenethiol. The molecular formula and purity is determined by mass spectrometry and confirmed by sedimentation velocity-analytical ultracentrifugation. The data also give preliminary indications of a unique structure and environment for Ag44(SR)304-.

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Ag₄₄(SR)₃₀^4-: A silver-thiolate superatom complex

Abstract

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