Electrospray Ionization Mass Spectrometry of Intrinsically Cationized Nanoparticles, [Au144/146(SC11H22N(CH2CH3)3+)x(S(CH2)5CH3)y]x+

Fields-Zinna, Christina A.; Sardar, Rajesh; Beasley, Christopher A.; Murray, Royce W.

doi:10.1021/ja906976w

Cited by 119 publications

(80 citation statements)

References 50 publications

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“…More recently, Fields-Zinna and colleagues utilized quaternary amine ligands with an intrinsic charge to enhance the ionization of larger MPCs. 30 …”

Section: Advances In Ms Methodologies For Aunp Analysismentioning

confidence: 99%

Characterization of thiolate-protected gold nanoparticles by mass spectrometry

Harkness¹,

Cliffel²,

McLean³

2010

Analyst

115

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Thiolate-protected gold nanoparticles (AuNPs) are a highly versatile nanomaterial, with wide-ranging physical properties dependent upon the protecting thiolate ligands and gold core size. These nanoparticles serve as a scaffold for a diverse and rapidly increasing number of applications, extending from molecular electronics to vaccine development. Key to the development of such applications is the ability to quickly and precisely characterize synthesized AuNPs. While a unique set of challenges have inhibited the potential of mass spectrometry in this area, recent improvements have made mass spectrometry a dominant technique in the characterization of small AuNPs, specifically those with discrete sizes and structures referred to as monolayer-protected gold clusters (MPCs). The unique ability of mass spectrometry to analyze the protecting monolayer of the AuNP may cause it to become a major technique in the characterization of larger AuNPs. The development of mass spectrometry techniques for AuNP characterization has begun to reveal interesting new areas of research. This report is a discussion of the historical challenges in this field, the emerging techniques which aim to meet those challenges, and the future role of mass spectrometry in the growing field of thiolate-protected AuNPs.

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“…More recently, Fields-Zinna and colleagues utilized quaternary amine ligands with an intrinsic charge to enhance the ionization of larger MPCs. 30 …”

Section: Advances In Ms Methodologies For Aunp Analysismentioning

confidence: 99%

Characterization of thiolate-protected gold nanoparticles by mass spectrometry

Harkness¹,

Cliffel²,

McLean³

2010

Analyst

115

View full text Add to dashboard Cite

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“…43 Murray and Jin later reassigned the latter clusters as Au 144 (SC n ) 60 60 . 46,47,69 Figure 4 shows a plot of the chemical compositions of these magic Au:SR clusters. There is clearly a very strong correlation between the numbers of Au atoms and thiolates; however, the core sizes of the magic Au:SR clusters do not match those of free magic AuCLs.…”

Section: Size Selectionmentioning

confidence: 99%

Toward an Atomic-Level Understanding of Size-Specific Properties of Protected and Stabilized Gold Clusters

Tsukuda

2012

Bulletin of the Chemical Society of Japan

232

230

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Metal clusters consisting of fewer than 100 atoms (diameter <2 nm) are highly promising as a new class of building units for functional materials because of their novel and size-dependent properties. Nevertheless, basic and applied studies of metals clusters have been hampered by the lack of specific guidelines for design and precise synthetic methods. This account surveys recent investigations of gold clusters focusing on our effort toward an atomic-level understanding and control of their size-specific properties. We have developed a size-controlled method for synthesizing gold clusters protected by ligands, stabilized by polymers, and supported on solids. Remarkable size-effects on stabilities and various properties including catalysis were observed. Their mechanisms are discussed based on fundamental knowledge of bare gold clusters in the gas phase.

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“…[42,43,64,65] X-ray powder diffraction (XRD) analysis shows that this cluster indeed has a non-fcc structure. [42] Four diffraction peaks in the 30-808 range were observed, and among them the peak at 538 (2q) rules out the fcc possibility.…”

Section: àmentioning

confidence: 99%

Quantum‐Sized Gold Nanoclusters: Bridging the Gap between Organometallics and Nanocrystals

Jin

Zhu

2011

Chemistry A European J

145

116

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This Concept article provides an elementary discussion of a special class of large-sized gold compounds, so-called Au nanoclusters, which lies in between traditional organogold compounds (e.g., few-atom complexes, <1 nm) and face-centered cubic (fcc) crystalline Au nanoparticles (typically >2 nm). The discussion is focused on the relationship between them, including the evolution from the Au⋅⋅⋅Au aurophilic interaction in Au(I) complexes to the direct Au-Au bond in clusters, and the structural transformation from the fcc structure in nanocrystals to non-fcc structures in nanoclusters. Thiolate-protected Au(n)(SR)(m) nanoclusters are used as a paradigm system. Research on such nanoclusters has achieved considerable advances in recent years and is expected to flourish in the near future, which will bring about exciting progress in both fundamental scientific research and technological applications of nanoclusters of gold and other metals.

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Electrospray Ionization Mass Spectrometry of Intrinsically Cationized Nanoparticles, [Au_144/146(SC₁₁H₂₂N(CH₂CH₃)₃⁺)_x(S(CH₂)₅CH₃)_y]^x+

Cited by 119 publications

References 50 publications

Characterization of thiolate-protected gold nanoparticles by mass spectrometry

Characterization of thiolate-protected gold nanoparticles by mass spectrometry

Toward an Atomic-Level Understanding of Size-Specific Properties of Protected and Stabilized Gold Clusters

Quantum‐Sized Gold Nanoclusters: Bridging the Gap between Organometallics and Nanocrystals

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