离子液体在超疏水银膜表面的电润湿性能

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (12): 1879-1884.

• 数学 • 上一篇

离子液体在超疏水银膜表面的电润湿性能

李伟，李梅，路庆华

（上海交通大学化学化工学院，上海 200240）

收稿日期:2011-11-21 出版日期:2011-12-31 发布日期:2011-12-31
基金资助:
上海-联合利华研究发展基金（09520715100）

Electrowetting of Ionic Liquids on Superhydrophobic Silver Surfaces

LI Wei, LI Mei, LU Qing-Hua

(School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)

Received:2011-11-21 Online:2011-12-31 Published:2011-12-31

摘要/Abstract

摘要： 利用银镜反应在玻璃基底上制备了粗糙银膜，组装烷基硫醇后得到超疏水银膜.研究了［Emim］［BF4］、［Bmim］［BF4］、［Hmim］［BF4］、［Hmim］［Br］和［Hmim］［OTf］等一系列离子液体和不同浓度KCl水溶液在超疏水银膜表面的电润湿性能，分析了离子液体中离子体积、离子液体液滴大小，以及超疏水表面组装层的分子结构对其电润湿性能的影响.结果表明，离子液体的电润湿性能与离子体积和电荷偏离有关，与液滴体积无关，相似电导率的离子液体与KCl水溶液具有相似的电润湿性.

关键词: 电润湿, 超疏水, 离子液体, 表面张力, 烷基硫醇

Abstract: Rough silver films were fabricated on glass substrates using silver mirror reaction, and the superhydrophobic surface was obtained by subsequent selfassembly with alkyl thiol. Electrowetting properties of various ionic liquids, including ［Emim］［BF4］, ［Bmim］［BF4］, ［Hmim］［BF4］, ［Hmim］［Br］, and ［Hmim］［OTf］, and aqueous KCl solution with different concentations on these superhydrophobic silver films was investigated, and the influence of factors such as the ion volume, the size of liquid droplet and the molecular structure of assembled layer on the electrowettablity was discussed. The results show that the electrowettability of ionic liquids is correlated with the ion volume and the charge delocalization, but is not influenced by the size of liquid droplet. In addition, it was found that the ionic liquids and KCl solution have similar electrowettablity as long as they have similar electrical conductivity.

Key words: electrowetting, superhydrophobic, ionic liquid, surface tension, alkyl thiol

中图分类号:

李伟, 李梅, 路庆华. 离子液体在超疏水银膜表面的电润湿性能[J]. 上海交通大学学报（自然版）, 2011, 45(12): 1879-1884.

LI Wei, LI Mei, LU Qing-Hua. Electrowetting of Ionic Liquids on Superhydrophobic Silver Surfaces[J]. Journal of Shanghai Jiaotong University, 2011, 45(12): 1879-1884.

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离子液体在超疏水银膜表面的电润湿性能

Electrowetting of Ionic Liquids on Superhydrophobic Silver Surfaces

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