Fabrication of Silver Nanowires Using Self-Assembled Reverse Micelle Template at Controlled Low Temperature

• Main Authors: Ching-yi Tsai, 蔡瀞儀
• Other Authors: Jui-hsiang Liu
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/44409681065291436142

碩士 === 國立成功大學 === 化學工程學系碩博士班 === 96 === Silver nanowires were fabricated by surfactant and diblock copolymer via a reverse micelle technique. In case of low molecular weight surfactant, silver nanoparticles self-assembled into nanotubes under proper conditions due to the secondary forces such as Van der Waals force and polar-polar interactions between reverse micelles. The melting point of the fabricated silver nanoparticles was found to be reduced to 115 oC. Silver nanotubes were sintered into nanowires at a controlled low temperature. In a low molecular weight surfactant system, methyl methacrylate (MMA) and octanoic acid were used as organic phase and surfactant, respectively. Effects of surfactant concentration, nanoparticle amount, and organic phases on the formation of self-assembly were studied. Furthermore, in order to investigate the possibility of the fabrication of silver nanowires using polymer surfactant, a diblock copolymer was synthesized through an ATRP polymerization. Silver nanoparticles were prepared using the diblock copolymer as a surfactant. The fabricated silver nanoparticles were mixed with MMA and photoinitiator, and then filled into pores of the anodic aluminium oxide membrane (AAO). After UV irradiation and the removal of AAO template, silver nanoparticle embedded polymer fibers were fabricated. Sintering the cured AAO film at 500 oC produced long length silver nanowires. Additionally, sintering of silver nanoparticles filled in AAO template produced short silver nanowires. This investigation demonstrates the fabrication of silver nanowires of a controlled length at a controlled low temperature.