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Growth and assembly of monodisperse Ag nanoparticles by exchanging the organic capping ligands

Published online by Cambridge University Press:  31 January 2011

Chenhui Hao ,
Dingsheng Wang ,
Wen Zheng  and
Qing Peng
Qing Peng*
Affiliation:
Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
*
b)Address all correspondence to these authors. e-mail: pengqing@mail.tsinghua.edu.cn
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Abstract

Nearly monodisperse Ag nanoparticles capped with octadecylamine were prepared by direct thermal decomposition of silver nitrate in octadecylamine. Then the “oriented attachment” assembly process of these monodisperse nanoparticles was exhibited by exchanging the organic capping ligands, and Ag short nanorods capped with dodecanethiol could be obtained as a result. The composition of Ag was analyzed by x-ray diffraction, and the morphological change from nanoparticle to short-nanorod was examined by transmission electron microscopy. Moreover, we also propose a probable mechanism for this transformation process.

Keywords

Chemical synthesis
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 2 , February 2009 , pp. 352 - 356
Copyright
Copyright © Materials Research Society 2009

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