Electrostatic assembly of gold colloidal nanoparticles on organosilane monolayers patterned by microcontact electrochemical conversion
Electrostatic assembly of gold colloidal nanoparticles on organosilane monolayers patterned by microcontact electrochemical conversion
复制标题
DOI：
10.1021/la060656r
复制
发表时间：
2006-08-29
期刊：
影响因子：
3.9
通讯作者：
Gwo, Shangjr
中科院分区：
文献类型：
--
作者：
Chen, Chi-Fan;Tzeng, Shien-Der;Gwo, Shangjr
介绍了一种新的方法，用于静电引导吸附的胶体纳米粒子到图案化的自组装单分子层（SAM）的特征尺寸从nm到mm。图案化的吸附模板是通过电场诱导的阳极氧化氨基硅烷SAM使用无油墨的方法实现的。在这种通用的方法中，“正”和“负”型图案转印都是可能的。化学转化的图案由微接触区域上的局部电场引起，并且由于自限制氧化动力学，图案化分辨率对氧化剂的扩散不敏感，从而能够实现高分辨率、大规模的平行图案化。
A new approach is introduced for electrostatically guided adsorption of colloidal nanoparticles onto a patterned self-assembled monolayer (SAM) with feature sizes ranging from nm to mm. Patterning of the adsorption templates is realized by electric-field-induced anodic oxidation of aminosilane SAM using an ink-free method. In this versatile method, both "positive" and "negative" type pattern transfers are possible. The chemically converted patterns are induced by localized electrical fields on the microcontacted areas, and the patterning resolution is insensitive to the diffusion of oxidizing agents because of the self-limiting oxidation kinetics, thereby enabling high-resolution, large-scale parallel patterning.