物理化学学报 >> 2012, Vol. 28 >> Issue (10): 2305-2314.doi: 10.3866/PKU.WHXB201209142

软物质 上一篇    下一篇

烷氧磺酸盐功能化的聚乙撑二氧噻吩水凝胶

杜然1,2, 张学同1   

  1. 1 北京理工大学材料学院, 北京 100081;
    2 北京大学化学与分子工程学院, 北京 100871
  • 收稿日期:2012-07-19 修回日期:2012-09-12 发布日期:2012-09-26
  • 通讯作者: 张学同 E-mail:zhangxtchina@yahoo.com
  • 基金资助:

    国家自然科学基金(20903009)和北京理工大学优秀青年教师资助计划(2010YS0903)资助

Alkoxysulfonate-Functionalized Poly(3,4-ethylenedioxythiophene) Hydrogels

DU Ran1,2, ZHANG Xue-tong1   

  1. 1 School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China;
    2 College of Chemistry & Molecular Engineering, Peking University, Beijing, 100871, P. R. China
  • Received:2012-07-19 Revised:2012-09-12 Published:2012-09-26
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20903009) and Science Foundation for the Excellent Youth Scholars of Beijing Institute of Technology, China (2010YS0903).

摘要:

通过氧化偶联聚合方法成功地制备出一种基于烷氧磺酸盐功能化的聚乙撑二氧噻吩水凝胶, 揭示了零维单体胶束向二维纳米片层及三维水凝胶的转变过程, 发现通过改变反应温度或初始单体浓度, 可以诱导水凝胶网络结构单元的维度变化, 即由零维纳米粒子向二维纳米片层进行转化. 提出了一种导电高分子水凝胶的合成方法, 即采用一种氧化剂与一种多价金属盐的混合物作为引发剂, 其中前者用于诱导单体聚合, 后者则充当离子交联试剂, 并发现可以通过引入不同金属离子来改变凝胶的形貌. 此外, 导电高分子水凝胶具有良好的电化学电容, 并具有选择性吸附与可控脱附某些染料分子的特性.

关键词: 导电高分子, 水凝胶, 电化学, 染料, 过氧化

Abstract:

Conducting polymer hydrogels based on alkoxysulfonate-functionalized poly(3, 4-ethylenedioxythiophene) have been synthesized via oxidative coupling polymerization. Formation of hydrogels from zero dimensional (0D) monomer micelles to three dimensional (3D) hydrogels with two dimensional (2D) nanosheets as the building blocks and dimension change of the building blocks of the resulting hydrogels from 0D nanoparticles to 2D nanosheets induced by altering the reaction temperature or initial monomer concentration have been disclosed. A synthetic strategy for the synthesis of the conducting polymer hydrogels based on simultaneous use of one chemical as an oxidant and one multivalent metal ion as an ionic crosslinker has been developed, and metal ions used have significant effect on the morphology of the resulting hydrogels. In addition, the as-prepared conducting polymer hydrogels possess good electrochemical capacity, and exhibit selective adsorption and controllable release towards some dye molecules.

Key words: Conducting polymer, Hydrogel, Electrochemistry, Dye, Over-oxidation

MSC2000: 

  • O648