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制备了十八胺单层、多层LB膜及粒径为几个纳米的金纳米粒子。pH值小于10.3时十八胺带正电荷,将其置于金纳米溶胶(pH值<10.3)中,带负电荷的金纳米粒子与带正电荷的十八胺之间通过静电作用,金纳米颗粒被成功地吸附组装到十八胺LB膜中,形成纳米薄膜。紫外-可见光谱、红外光谱及扫描电镜显示:金纳米颗粒通过这种方法能够很好的组装在十八胺LB膜上,且其组装层整齐有序,同时也受十八胺LB膜层数及组装时间的影响。
An octadecylamine monolayer, a multilayered LB film and gold nanoparticles with a particle size of several nanometers were prepared. When the pH value is less than 10.3 octadecylamine is positively charged, it is placed in a gold nano-sol (pH <10.3), negatively charged gold nanoparticles and positively charged octadecylamine by electrostatic interaction, gold nano The particles were successfully adsorbed and assembled into the octadecylamine LB film to form a nano-film. The results of UV-Vis, FTIR and SEM showed that gold nanoparticle could be well assembled on octadecylamine LB film by this method, and its assembly layer was neat and orderly, And assembly time.