Department of Polymer Science, Kyungpook National University, Buk-gu, Daegu, South Korea.
Lab Chip. 2011 Oct 21;11(20):3493-8. doi: 10.1039/c1lc20402e. Epub 2011 Aug 26.
We are reporting for the first time the pH responsiveness of liquid crystal (LC) microdroplets decorated with an amphiphilic block copolymer of PAA-b-LCP. We successfully demonstrated the adsorption of block copolymer on LC droplets by fluorescence microscopy and pH response to the radial-to-bipolar orientational change of the LC droplets by changing pH from 12 to 2 through the polarized optical microscope (POM). We believe that our results may pave the way for the generation of monodisperse droplets decorated by various amphiphilic block copolymers which respond to several kinds of the external stimuli. These developments may be important for potential applications of the LC droplets in sensing and encapsulation fields.
我们首次报道了带有两亲性嵌段共聚物 PAA-b-LCP 的液晶（LC）微滴的 pH 响应性。我们通过荧光显微镜成功地证明了嵌段共聚物在 LC 液滴上的吸附，并通过偏振光显微镜（POM）将 pH 值从 12 改变到 2，观察到 LC 液滴的径向-双极取向变化的 pH 响应。我们相信，我们的结果可能为通过各种两亲性嵌段共聚物对单分散液滴进行修饰并对多种外部刺激做出响应铺平道路。这些发展对于 LC 液滴在传感和封装领域的潜在应用可能是重要的。
