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Construction of spherical assembly of gold nanoparticles using tetra [(methylthio)methyl] silane as ligand
Maye, MM., Lim, IMS., Luo, J., Han, L., Rabinovich, D., Chen, S., Maye, MP., & Zhong, CJ. (2003). Construction of spherical assembly of gold nanoparticles using tetra [(methylthio)methyl] silane as ligand. In TM. Orlando, L. Merhari, DP. Taylor, & K. Ikuta (Eds.), Three-dimensional Nanoengineered Assemblies (Vol. 739, pp. 59-64). Chinese Materials Research Society.
This paper reports a study on the assembly of gold nanoparticles via a tetradentate organosulfur ligand, tetra[(methylthio)methyl] si lane. We have characterized the evolution of the assembly from individual nanoparticles to spheres (30 similar to 160 nm) of linked nanoparticles using UV-Visible, TEM, and AFM techniques. We have also demonstrated that the assemblies could be effectively disassembled via manipulating the ligand chemistry. Intriguing assembly-substrate interactions were observed, which could be related to interfacial hydrophobicity. Implications of these findings to the development of abilities in interfacial manipulation of the nanostructures are also discussed.
