大学化学 >> 2022, Vol. 37 >> Issue (5): 2111086.doi: 10.3866/PKU.DXHX202111086

所属专题: 第2届全国大学生化学实验创新设计竞赛

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聚吡咯电化学制备实验的改进——一个开放式综合实验设计

曾丹黎(), 张运丰, 杜思思, 刘凯, 刘一诺   

  • 收稿日期:2021-11-30 录用日期:2021-12-07 发布日期:2022-04-11
  • 通讯作者: 曾丹黎 E-mail:zengdanli@cug.edu.cn
  • 作者简介:曾丹黎, Email: zengdanli@cug.edu.cn
  • 基金资助:
    中国地质大学(武汉)本科教学工程项目(ZL202006);中国地质大学(武汉)本科教学工程项目(ZL202016);教育部产学合作协同育人项目(202101033003)

Improved Electrochemical Preparation of Polypyrrole: Design of an Open Comprehensive Experiment

Danli Zeng(), Yunfeng Zhang, Sisi Du, Kai Liu, Yinuo Liu   

  • Received:2021-11-30 Accepted:2021-12-07 Published:2022-04-11
  • Contact: Danli Zeng E-mail:zengdanli@cug.edu.cn

摘要:

聚吡咯作为一种具有特异光电性能的π-共轭类导电高分子,其制备实验也逐步走进大学课堂,成为融合化学、物理、材料等多个学科知识的代表性实验。项目组以本校“聚吡咯的电化学制备实验”为基础,将其从一个简单的任务式制备实验,改进成一个集制备条件自主选择以及导电性能表征为一体的综合性开放式实验:首先在三电极体系下进行电化学聚合,并以此为切入点,展开对聚合条件的开放式探索,然后使用循环伏安法对所得聚吡咯薄膜进行电致变色实验,最后测试其电导率并展开讨论和分析。本改进实验内容丰富,有助于学生综合技能的提升和科学思维的培养,更加贴合现代化学学科发展。

关键词: 聚吡咯, 电化学聚合, 电致变色, 三电极体系, 开放式实验

Abstract:

Polypyrrole, a π-conjugated conducting polymer with specific photoelectric properties, has been systematically introduced into the curricula of many colleges. Its preparation has been used to illustrate comprehensive experiments, integrating knowledge from multiple disciplines such as chemistry, physics, and material science. The Electrochemical Preparation Experiment of Polypyrrole developed by our university was successfully advanced from a simple preparation task into a comprehensive open experiment. First, electrochemical polymerization was carried out under the three-electrode system and the polymerization conditions were explored. Thereafter, a cyclic voltammetry test was conducted to study the electrochromism of polypyrrole. Finally, the conductivity of the products, obtained under different conditions, was characterized and analyzed. The enhanced content of this new experiment design will help students improve their comprehensive skills and cultivate their scientific thinking, which conforms with current developments in modern chemistry education.

Key words: Polypyrrole, Electrochemical polymerization, Electrochromism, Three-electrode system, Open experiment

MSC2000: 

  • G64