One-pot synthesis, optical property and self-assembly of monodisperse silver nanospheres

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.05.041· OSTI ID:21580218

Shengchun, Qu ^[1]; Yanbing, Hou ^[2]; Yongsheng, Wang ^[2]; Zhanguo, Wang ^[1]

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1. Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 (China)
2. Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044 (China)

High-quality spherical silver (Ag) nanocrystals have been synthesized by using a one-pot approach, in which pre-synthesis of organometallic precursors is not required. This reaction involves the thermolysis of a mixed solution of silver acetate and n-dodecanethiol in a non-coordinating organic solvent. The size of the as-obtained Ag nanospheres can be controlled by adjusting the reaction time, reaction temperature and the amount of silver acetate added. The growth and nucleation process of the resultant Ag nanospheres have been studied by employing UV-vis absorption spectra and transmission electron microscopy (TEM) images. Furthermore, these Ag nanospheres have good self-assembly behaviors, and they are easily self-assembled into two- or three-dimensional superlattice structures due to the bundling and interdigitation of thiolate molecules adsorbed on Ag nanospheres. This one-pot synthetic procedure is simple and highly reproducible, which may be extended to prepare other noble-metal nanocrystals. - Graphical abstract: Different sized and monodisperse silver nanospheres were prepared using a one-pot approach with no pre-synthesis of organometallic precursors, and the silver nanospheres can self-assemble into highly ordered superlattices. Highlights: > Monodisperse silver nanospheres have been synthesized by a one-pot approach. > The synthetic method does not need pre-synthesis of organometallic precursors. > The silver nanospheres can self-assemble into highly ordered superlattices. > This synthetic method can be extended to prepare other metal nanocrystals.

• OSTI ID: 21580218
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 8; Other Information: DOI: 10.1016/j.jssc.2011.05.041; PII: S0022-4596(11)00290-8; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

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37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION SPECTRA
NANOSTRUCTURES
OPTICAL PROPERTIES
ORGANIC SOLVENTS
ORGANOMETALLIC COMPOUNDS
SILVER
SOLUTIONS
SUPERLATTICES
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
DISPERSIONS
ELECTRON MICROSCOPY
ELEMENTS
HOMOGENEOUS MIXTURES
METALS
MICROSCOPY
MIXTURES
NONAQUEOUS SOLVENTS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
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SPECTRA
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