Controlling electroosmotic flow in microchannels with pH-responsive polyelectrolyte multilayers

被引：62

作者：

Sui, ZJ

Schlenoff, JB ^{[1
]}

机构：

[1] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA

[2] Florida State Univ, Ctr Mat Res & Technol, Tallahassee, FL 32306 USA

来源：

LANGMUIR | 2003年 / 19卷 / 19期

关键词：

D O I：

10.1021/la034682q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A polyelectrolyte multilayer coating comprising acrylic acid or imidazole units afforded precise control over the rate and direction of electroosmotic flow within fused silica capillaries. Morphological changes accompanying the pH-induced switching of surface charge were minimized by diluting the pH-responsive polyelectrolyte with permanently charged polymer. Electroosmotic stability over many runs was demonstrated.

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页码：7829 / 7831

页数：3

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