Nanocluster Size Evolution Studied by Mass Spectrometry in Room Temperature Au25(SR)18 Synthesis

被引：161

作者：

Dharmaratne, Asantha C. ^{[1
]}

Krick, Thomas ^{[2
]}

Dass, Amala ^{[1
]}

机构：

[1] Univ Mississippi, Dept Chem & Biochem, University, MS 38677 USA

[2] Univ Minnesota, Dept Biochem Mol Biol & Biophys, St Paul, MN 55108 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 38期

关键词：

PROTECTED GOLD NANOCLUSTERS; LARGE-SCALE SYNTHESIS; SR CLUSTER COMPOUNDS; AU-25; CLUSTERS; METAL NANOPARTICLES; CRYSTAL-STRUCTURE; LIGAND-EXCHANGE; NANOMETER-SCALE; KDA GOLD; COMPLEXES;

D O I：

10.1021/ja906087a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We show that MALDI mass spectrometry, suitable for mixtures, is an indispensable tool in probing the mechanism of nanocluster synthesis enabling positive identification of nanoclusters. The size evolution of the mixture of larger clusters (Au-102, Au-68, Au-38) to form highly monodisperse Au-25 nanoclusters is demonstrated and probably includes the participation of Au(I) thiolate. The size evolution via structural reconstruction of the larger cores such as 38, similar to 44, 68, and 102 to a Au-25 nanocluster has been discussed.

引用

页码：13604 / +

页数：4

共 34 条

[1] On the structure of thiolate-protected Au25 [J].

Akola, Jaakko ;

Walter, Michael ;

Whetten, Robert L. ;

Haekkinen, Hannu ;

Groenbeck, Henrik .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (12) :3756-+

[2] Ubiquitous 8 and 29 kDa gold: Alkanethiolate cluster compounds: Mass-spectrometric determination of molecular formulas and structural implications [J].

Chaki, Nirmalya K. ;

Negishi, Yuichi ;

Tsunoyama, Hironori ;

Shichibu, Yukatsu ;

Tsukuda, Tatsuya .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (27) :8608-+

[3] Nanoparticle MALDI-TOF mass spectrometry without fragmentation:: Au25(SCH2CH2Ph)18 and mixed monolayer Au25(SCH2CH2Ph)18-x(L)x [J].

Dass, Amala ;

Stevenson, Anthony ;

Dubay, George R. ;

Tracy, Joseph B. ;

Murray, Royce W. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (18) :5940-5946

[4] Mass Spectrometric Identification of Au68(SR)34 Molecular Gold Nanoclusters with 34-Electron Shell Closing [J].

Dass, Amala .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (33) :11666-+

[5] Synthesis and isolation of the molecule-like cluster Au38(PhCH2CH2S)24 [J].

Donkers, RL ;

Lee, D ;

Murray, RW .

LANGMUIR, 2004, 20 (05) :1945-1952

[6] Synthesis and isolation of the molecule-like cluster Au38(PhCH2CH2S)24 (vol 20, pg 1945, 2004) [J].

Donkers, Robert L. ;

Lee, Dongil ;

Murray, Royce W. .

LANGMUIR, 2008, 24 (11) :5976-5976

[7] Electrospray mass spectrometry study of tiopronin monolayer-protected gold nanoclusters [J].

Gies, Anthony P. ;

Hercules, David M. ;

Gerdon, Aren E. ;

Cliffel, David E. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (05) :1095-1104

[8] Divide and protect:: Capping gold nanoclusters with molecular gold-thiolate rings [J].

Hakkinen, H ;

Walter, M ;

Grönbeck, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (20) :9927-9931

[9] Crystal structure of the gold nanoparticle [N(C8H17)4][Au25(SCH2CH2Ph)18] [J].

Heaven, Michael W. ;

Dass, Amala ;

White, Peter S. ;

Holt, Kennedy M. ;

Murray, Royce W. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (12) :3754-+

[10] Quantized double-layer charging of highly monodisperse metal nanoparticles [J].

Hicks, JF ;

Miles, DT ;

Murray, RW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (44) :13322-13328

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