Electrochemically Triggered Interfacial Deposition/Assembly of Aqueous‐Suspended Colloids
Electrochemically Triggered Interfacial Deposition/Assembly of Aqueous‐Suspended Colloids
复制标题
电化学触发水相悬浮胶体的界面沉积/组装
DOI：
10.1002/celc.201902143
复制
发表时间：
2020
期刊：
影响因子：
4
通讯作者：
Zhan, Wei
中科院分区：
文献类型：
--
作者：
Iqbal, Md. Shamim;Zhan, Wei
在我们最近对二茂铁封端的自组装单分子膜上的胶体沉积的研究（Langmuir 2018，34，12776-12786）之后，我们在这项研究中试图回答以下问题：水悬浮胶体如何响应相同的电化学触发-二茂铁氧化？使用羧基封端的聚苯乙烯纳米/微珠作为模型胶体，我们首先确认了它们在这种氧化还原活性表面的转移和沉积。所涉及的关键因素，包括起始电极表面，胶体的大小，范围/持续时间的施加电位，和小的支持电解质，进行了详细检查。其中一个特别令人感兴趣的发现是，与电驱动过程相比，电化学触发组件的上级效率。利用这一特点，我们展示了在末端电极上快速、高保真的胶体微图案形成。
Following our recent work on polyelectrolyte deposition on ferrocene‐terminated self‐assembled monolayers (Langmuir2018,34,12776–12786), we seek in this study to answer the following question: How would aqueous‐suspended colloids respond to the same electrochemical trigger – ferrocene oxidation? Using carboxylic‐terminated polystyrene nano‐/microbeads as a model colloid, we confirm first their transfer to and deposition at such redox‐active surfaces. Key factors involved, including the starting electrode surfaces, colloid size, range/duration of applied potential, and small supporting electrolytes, are examined in detail. A particularly interesting finding among these is the superior efficiency of the electrochemically triggered assembly compared to the electrically driven process. Taking advantage of this feature, we demonstrate fast, high‐fidelity colloid micropattern formation on electrodes at the end.
影响因子：
9.9
作者：
Kershner, RJ;Bullard, JW;Cima, MJ
通讯作者：
Cima, MJ
影响因子：
3.9
作者：
M. S. Iqbal;Wei Zhan
通讯作者：
Wei Zhan