Size distributions of gold nanoclusters studied by liquid chromatography

被引：141

作者：

Wilcoxon, JP ^{[1
]}

Martin, JE ^{[1
]}

Provencio, P ^{[1
]}

机构：

[1] Sandia Natl Labs, Dept 1122, Dept Chem, Albuquerque, NM 87185 USA

来源：

LANGMUIR | 2000年 / 16卷 / 25期

关键词：

D O I：

10.1021/la000669j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report high-pressure liquid chromatography (HPLC) and transmission electron microscopy (TEM) studies of the size distributions of nanosize gold clusters dispersed in organic solvents. These metal clusters are synthesized in inverse micelles at room temperature, and those investigated range in diameter from 1 to 10 nm. HPLC is sensitive enough to discern changes in hydrodynamic volume corresponding to only 2 carbon atoms of the passivating agent or metal core size changes of less than 4 Angstrom. We have determined for the first time how the total cluster volume (metal core + passivating organic shell) changes with the size of the passivating agent.

引用

页码：9912 / 9920

页数：9

共 19 条

[11] Nanocrystal gold molecules [J].

Whetten, RL ;

Khoury, JT ;

Alvarez, MM ;

Murthy, S ;

Vezmar, I ;

Wang, ZL ;

Stephens, PW ;

Cleveland, CL ;

Luedtke, WD ;

Landman, U .

ADVANCED MATERIALS, 1996, 8 (05) :428-433

[12] Performance of a high-resolution, synchrotron-based, small-angle x-ray scattering instrument [J].

Wilcoxon, JP ;

Craft, SA ;

Thurston, TR .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1996, 67 (09) :3021-3034

[13] STRONG QUANTUM-SIZE EFFECTS IN A LAYERED SEMICONDUCTOR - MOS2 NANOCLUSTERS [J].

WILCOXON, JP ;

SAMARA, GA .

PHYSICAL REVIEW B, 1995, 51 (11) :7299-7302

[14] Photoluminescence from nanosize gold clusters [J].

Wilcoxon, JP ;

Martin, JE ;

Parsapour, F ;

Wiedenman, B ;

Kelley, DF .

JOURNAL OF CHEMICAL PHYSICS, 1998, 108 (21) :9137-9143

[15] OPTICAL-PROPERTIES OF GOLD COLLOIDS FORMED IN INVERSE MICELLES [J].

WILCOXON, JP ;

WILLIAMSON, RL ;

BAUGHMAN, R .

JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (12) :9933-9950

[16]

WILCOXON JP, 1989, P FALL M MRS

[17]

WILCOXON JP, 1992, Patent No. 5147841

[18] THE MAGIC NUMBERS OF METAL AND METAL ALLOY CLUSTERS [J].

YAMADA, Y ;

CASTLEMAN, AW .

JOURNAL OF CHEMICAL PHYSICS, 1992, 97 (06) :4543-4548

[19]

Yau W., 1979, MODERN SIZE EXCLUSIO, V1

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