Cluster beams from passivated nanocrystals

被引：36

作者：

Vezmar, I ^{[1
]}

Alvarez, MM ^{[1
]}

Khoury, JT ^{[1
]}

Salisbury, BE ^{[1
]}

Shafigullin, MN ^{[1
]}

Whetten, RL ^{[1
]}

机构：

[1] GEORGIA INST TECHNOL, SCH CHEM, ATLANTA, GA 30332 USA

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1997年 / 40卷 / 1-4期

关键词：

SIMPLE METAL-CLUSTERS; MASS-SPECTROMETRY; GOLD; IONIZATION; MOLECULES; BIOMOLECULES; DESORPTION; PARTICLES; SURFACES; PHYSICS;

D O I：

10.1007/s004600050180

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Stable, intense beams of large metal clusters (from 10(2) to 10(3) Au or Ag atoms) can be produced by laser desorption of molecular films of passivated nanocrystals that have undergone fractionation by size and a separate structural characterization. The mass onset of the desorbed species corresponds directly to the dimensions of the nanocrystal core, indicating that only the surfactant shell is lost during desorption. Photofragmentation, photoionization, and photodetachment from beams of large metal clusters, generated in this way, have all been observed.

引用

页码：147 / 151

页数：5

共 39 条

[1]

ALVAREZ MM, 1995, THESIS UCLA

[2]

ALVAREZ MM, UNPUB NANOCRYSTAL FL

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