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Title: Etching and aging effects in nanosize Au clusters investigated using high resolution size-exclusion chromatography.

Experiments using high-resolution size exclusion chromatography (HRSEC), dynamic light scattering, and transmission electron microscopy are conducted to investigate the effects of aging of Au nanoclusters in the presence of surfactant ligands. It is observed that contrary to the expectation that aging in solution will always broaden the size dispersion and increase the average size (Ostwald ripening), a narrowing of the size dispersion and change in average size can occur with time under ambient conditions.
Authors:
;
Publication Date:
OSTI Identifier:
946992
Report Number(s):
SAND2003-2316J
TRN: US200904%%301
DOE Contract Number:
AC04-94AL85000
Resource Type:
Journal Article
Resource Relation:
Journal Name: Proposed for publication in Journal of Physical Chemistry B.
Research Org:
Sandia National Laboratories
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; AGING; GOLD; ATOMIC CLUSTERS; NANOSTRUCTURES; SURFACTANTS