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Updated: Aug 16, 2026
Studying the Effects of Temperature on the Nucleation and Growth of Nanoparticles by Liquid-Cell Transmission Electron Microscopy
Published on: February 17, 2021
Room-temperature strategy for networked nonspherical gold nanostructures from Au(III)[G-2]CO2H dendrimer complex
Shuyan Gao1, Hongjie Zhang, Xudong Liu
1Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Jilin, Changchun 130022, People's Republic of China.
Abstract:
The present work describes a convenient approach to fabricate networked nonspherical gold nanostructures by using [G-2]CO2H dendrimer and toluene as capping and bridging agents in a CH2Cl2 and H2O biphasic system. A controlled linear assembly is achieved without the use of any catalyst at room temperature. UV-vis spectrum, transmission electron microscopy (TEM), selected area electron diffraction (SAED), and X-ray diffraction (XRD) analysis show that the product is well networked nanostructures with diameter of 4-10 nm and consists of coalesced face-centered cubic gold nanocrystals. Extended experiments reveal that both benzene and dimethylbenzene can also inhabit the gold ions to make them crosslinked, prolong the nucleation points and eventually facilitate the formation of the networks.
