Magic Numbers of Gold Clusters Stabilized by PVP

被引：105

作者：

Tsunoyama, Hironori ^{[1
]}

Tsukuda, Tatsuya ^{[1
,2
]}

机构：

[1] Hokkaido Univ, Catalysis Res Ctr, Sapporo, Hokkaido 0010021, Japan

[2] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 51期

关键词：

PALLADIUM NANOPARTICLES; CATALYTIC-ACTIVITIES; MASS-SPECTROMETRY; AEROBIC OXIDATION; SIZE-CONTROL; NANOCLUSTERS; METAL; WATER; CO; GENERATION;

D O I：

10.1021/ja908188f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We applied matrix-assisted laser desorption/ionization (MALDI) for mass analysis of Au clusters stabilized by poly(vinyl-pyrrolidone) (PVP) and discovered a series of magic numbers for Au cluster size: 35 +/- 1, 43 +/- 1, 58 +/- 1, 70 +/- 3, 107 +/- 4, 130 +/- 1, and 150 +/- 2. Magic numbers smaller than similar to 70 agree with those of free Au clusters and can be explained qualitatively by the electronic shell. model. In contrast, magic numbers larger than similar to 100 are obviously different from those of the free clusters. We suggest that the deviation from the electronic shell model is due to perturbation of the electronic and/or geometric structures caused by interaction with PVP.

引用

页码：18216 / +

页数：3

共 32 条

[1] 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

[2] 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-+

[3] Preparation of PAMAM- and PPI-metal (silver, platinum, and palladium) nanocomposites and their catalytic activities for reduction of 4-nitrophenol [J].

Esumi, K ;

Isono, R ;

Yoshimura, T .

LANGMUIR, 2004, 20 (01) :237-243

[4] Au34-:: A fluxional core-shell cluster [J].

Gu, Xiao ;

Bulusu, Satya ;

Li, Xi ;

Zeng, X. C. ;

Li, Jun ;

Gong, X. G. ;

Wang, Lai-Sheng .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (23) :8228-8232

[5] 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-+

[6] Relativistic effects and the unique low-symmetry structures of gold nanoclusters [J].

Huang, Wei ;

Ji, Min ;

Dong, Chuan-Ding ;

Gu, Xiao ;

Wang, Lei-Ming ;

Gong, Xin Gao ;

Wang, Lai-Sheng .

ACS NANO, 2008, 2 (05) :897-904

[7] Structure of a thiol monolayer-protected gold nanoparticle at 1.1 Å resolution [J].

Jadzinsky, Pablo D. ;

Calero, Guillermo ;

Ackerson, Christopher J. ;

Bushnell, David A. ;

Kornberg, Roger D. .

SCIENCE, 2007, 318 (5849) :430-433

[8] Origin of unusual catalytic activities of Au-based catalysts [J].

Kim, YD ;

Fischer, M ;

Ganteför, G .

CHEMICAL PHYSICS LETTERS, 2003, 377 (1-2) :170-176

[9] ELECTRONIC SHELL STRUCTURE AND ABUNDANCES OF SODIUM CLUSTERS [J].

KNIGHT, WD ;

CLEMENGER, K ;

DEHEER, WA ;

SAUNDERS, WA ;

CHOU, MY ;

COHEN, ML .

PHYSICAL REVIEW LETTERS, 1984, 52 (24) :2141-2143

[10] Size- and temperature-dependent structural transitions in gold nanoparticles [J].

Koga, K ;

Ikeshoji, T ;

Sugawara, K .

PHYSICAL REVIEW LETTERS, 2004, 92 (11) :115507-1

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