苯胺低聚物-二氧化硅复合纳米粒子作为高密度信息存储材料的初步探讨

近年来，在有机半导体中，聚苯胺低聚物已成为最为广泛的关注热点之一1]．这不仅是因为它们与母体聚苯胺相比，有着良好的溶解性和确定的化学结构以及较低的杂质含量2]．而且，通过改变共轭链长度或进行不同程度的化学修饰，如改变分子链上末端基团等，来调节它们的电子特性3，4]，使其能带值能够调制到所要求的范围内，以满足电子器件的诸多要求［’j．苯胺低聚物的这些优点及其3种相对稳定的氧化态形式使其作为高密度信息存储材料有巨大的潜力．将其以纳米粒子形式进行二维有序组装，使每一个粒子成为一个信息纪录点是我们目前所面临的…

Preliminary Study on Oligoaniline/Silica Composite Nano-particles as a High Density Information Storage Material

An access to an increase in the information storage capacity is to reduce memory units to a nano-scale. There fore, we used carboxylized phenyl-capped polyaniline tetramer (PCAT) as the functional component and silica as the carrier to prepare PCAT/silica composite nano-particles (= 60 nm) with a structure of core-shell. The functionalized particles were two-dimensionally arrayed on substrates such as silicon, glass and ITO glass at pH 3.SEM and AFM results proved the arraying regularity of these particles under any given conditions, and the electrostatic force microscopy showed their response to +3 V bias applied.