合成Imogolite纳米管的挥发诱导自组装

Evaporation-induced Self-organizations of Synthetic Imogolite Nanotubes

利用溶液液滴挥发研究了合成Imogolite纳米管的自组装行为,并利用透射电镜和电子衍射等手段研究了挥发干燥斑的结构。纳米管的聚集行为受溶液的浓度、pH值及离子强度的影响。提出自组装过程的驱动机制可能包括液滴的毛细管流动和表面效应以及湿度性质。

Synthetic imogolite nanotubes were found to self-assemble when a droplet of the aqueous solution was dried in ambient. The resulting deposit structures were investigated by transmission electron microscopy and electron diffraction. The aggregation behavior of nanotubes was dependent on the solution concentration,pH and ionic strength.The mechanism driving the assembly process was proposed,which may involve capillary flow and surface effects and wetting properties of the droplet.