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Conducting-Polymer Microcontainers: Controlled Syntheses and Potential Applications

机译：导电聚合物微容器：受控合成和潜在应用

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摘要

We have demonstrated the controlled synthesis of conducting-polymer microcontainers through the electrochemical generation of surfactant (i.e., β-naphthalenesulfonic acid, β-NSA)-stabilized H_2 gas bubbles on the working electrode, followed by electrochemical polymerization of pyrrole around the wall of the "soap-bubble" template. It was noticed that the density, shape, and wall thickness of the polypyrrole microcontainers thus prepared could be regulated by controlling the electrochemical potential applied for the generation of H_2 gas and the experimental conditions (e.g., the surfactant concentration, number of the cyclic voltammetric scanning) for the electropolymerization of pyrrole. By pre-patterning the working electrode surface with non-conducting polymers using microcontact printing (μCP) or plasma patterning, we have also produced conducting-polymer microcontainers in a patterned fashion. Furthermore, potential applications of the patterned and non-patterned conducting-polymer microcontainers have been demonstrated; for example, through the encapsulation of appropriate fluorescence-labeled molecules (e.g., fluorescein cadaverin) into the conducting-polymer microcontainers by sealing their opened mouths with sequential electropolymerization of pyrrole. The resulting closed microcontainers could then be used for controlled releases.
机译：我们已经证明，通过在工作电极上电化学生成表面活性剂（即β-萘磺酸，β-NSA）稳定的H_2气泡，然后在电极壁周围进行吡咯的电化学聚合，可控制地合成导电聚合物微容器。 “肥皂泡”模板。注意到由此制备的聚吡咯微容器的密度，形状和壁厚可以通过控制用于产生H_2气体的电化学势和实验条件（例如表面活性剂浓度，循环伏安扫描的次数）来调节。 ）进行吡咯的电聚合。通过使用微接触印刷（μCP）或等离子图形用非导电聚合物对工作电极表面进行预图案化，我们还以图案化方式生产了导电聚合物微容器。此外，已经证明了图案化和非图案化的导电聚合物微容器的潜在应用。例如，通过将适当的荧光标记分子（例如，荧光素尸胺）封装在导电聚合物微容器中，方法是依次密封吡咯并进行电聚合，将其张开的嘴密封起来。然后将所得的封闭式微容器用于控释。

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  • 来源
    《Advanced Functional Materials》 |2004年第2期|p. 145-151|共7页
  • 作者

    Vardhan Bajpai; Pingang He; Liming Dai;

  • 作者单位

    Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, OH 44235-0301, USA;

    Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, OH 44235-0301, USA;

    Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, OH 44235-0301, USA;

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  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
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