A Greener, Controllable, Metal Mediated Route to Polyanilines

一种更环保、可控、金属介导的聚苯胺路线

• 批准号: 0314666
• 负责人: Rasika Dias
• 金额: $ 39万
• 依托单位: University of Texas at Arlington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-15 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0314666&HistoricalAwards=false
• 关键词: Greener; Controllable; Metal; Mediated; Route

H.V. Rasika Dias and Ronald Elsenbaumer, Department of Chemistry and Biochemistry, University of Texas at Arlington, are supported by the Inorganic, Bioinorganic and Organometallic Chemistry Program for developing new methods for the preparation of a commercially important electrically conductive polymer, polyaniline. They are studying new catalyst systems that will polymerize aniline under conditions that are milder, cheaper and more environmentally friendly. The tunability of the catalyst system allows better control over the polymerization and may allow incorporation of other co-monomers and better processability of the polyaniline. The key to this family of catalysts is the highly fluorinated ligands such as[HB(3,5-(CF3)2Pz)3]-. Copper complexes of these nitrogen-based, fluorinated ligands can bind and activate oxygen without undesirable side-reactions between the ligand and oxygen.Polyaniline is a conducting polymer with good stability and important optical, electrical and electrochemical properties. Polyaniline is currently used in electrochromic displays, rechargeable batteries, microelectronics, antistatic materials, sensors and anti-corrosion coatings. The current industrial synthesis of polyaniline is expensive and produces a great deal of undesirable waste products. This new catalyst family may provide a "green synthesis" for polyaniline that uses air or oxygen as the oxidant andproduces only water as a by-product. Students working on this interdisciplinary project will gain skills in catalyst synthesis and polymer synthesis and characterization.

高压德克萨斯大学阿灵顿分校化学与生物化学系的 Rasika Dias 和 Ronald Elsenbaumer 在无机、生物无机和有机金属化学项目的支持下，开发了制备商业上重要的导电聚合物聚苯胺的新方法。他们正在研究新的催化剂系统，该系统将在更温和、更便宜和更环保的条件下聚合苯胺。催化剂体系的可调性可以更好地控制聚合反应，并可以掺入其他共聚单体，并提高聚苯胺的加工性能。该系列催化剂的关键是高度氟化的配体，例如[HB(3,5-(CF3)2Pz)3]-。这些氮基氟化配体的铜配合物可以结合并活化氧，而配体和氧之间不会发生不良副反应。聚苯胺是一种导电聚合物，具有良好的稳定性和重要的光学、电学和电化学性能。聚苯胺目前用于电致变色显示器、可充电电池、微电子、抗静电材料、传感器和防腐涂料。目前聚苯胺的工业合成成本昂贵并且产生大量不需要的废产物。这种新的催化剂系列可以为聚苯胺提供“绿色合成”，它使用空气或氧气作为氧化剂，并且仅产生水作为副产物。从事这个跨学科项目的学生将获得催化剂合成以及聚合物合成和表征方面的技能。