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Fusion and Growth Behavior of Gold Nanoparticles Stabilized by Allylmercaptane
Author(s) -
Shirahata Naoto,
Yonezawa Tetsu,
Matsushita Yoshihiro,
Masuda Yoshitake,
Koumoto Kunihito
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200851010
Subject(s) - fusion , colloidal gold , nanoparticle , materials science , nanotechnology , chemical engineering , engineering , philosophy , linguistics
Fusion and growth behavior of gold nanoparticles in a relatively low temperature range were studied using a transmission electron microscopy (TEM). Using allylmercaptane (AM: 2‐propene‐1‐thiol, HSCH 2 CHCH 2 ) as a particle stabilizer, a colloidal suspension of AM‐terminated gold nanoparticles was prepared with a two‐phase system. TEM observation revealed that the adjacent nanoparticles formed a particulate neck to give fused nanoproducts even at lower than 65 °C. Such fusion behavior allowed a non‐spherical growth of the adjacent nanoparticles. Interestingly, the nanoparticle fused to form a nanowire‐type structure when the thermal radical reaction occurred between the terminal double carbon bond of the stabilizer and the hydrogen terminated surface of silicon wafer.