离子液体增效的新型固相微萃取头的电化学制备、表征及应用

项目名称： 离子液体增效的新型固相微萃取头的电化学制备、表征及应用

项目编号： No.21275112

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 曾百肇

作者单位： 武汉大学

项目金额： 80万元

中文摘要： 固相微萃取是一种具有广泛应用前景的试样前处理技术，本项目拟通过电沉积法在金属丝表面一步制备离子液体（IL)功能化的纳米网络结构聚合物和聚合物-纳米材料涂层，使所得萃取头既有很强的萃取功能、好的柔韧性和稳定性，又有高的萃取/解析速度和制备可控性，从而全面提高其性能。通过采用有机介质，使在水溶液中难溶、难电沉积的物质得以电沉积；通过掺杂碳纳米材料、IL及与导电聚合物单体共沉积使非导电性沉积膜的导电性改善，以实现其可控制备，从而大大增加电沉积涂层种类。通过改变电沉积参数、溶液组成和IL种类，调控涂层厚度、结构和选择性；运用多种技术对涂层形貌、结构性能进行表征；同时，探讨相关电沉积机理和IL的增效机制。在此基础上，优化组合，研制多种类型用于环境、食品试样前处理及色谱分析的高性能固相微萃取头。这将克服目前基于IL、纳米材料、聚合物等的固相微萃取头各自存在的不足，推动该技术的进一步发展和应用。

中文关键词： 固相微萃取；电化学聚合；离子液体；纳米材料；聚合离子液体

英文摘要： Solid-phase microextraction (SPME) is a promising sampling and sample pretreatment technique. It has great application potential and attracts increasing interesting of researchers. In this project we intend to fabricate ionic liquid (IL, including liquid polymeric ionic liquids) functionalized netlike nano-structure coatings through one-step electrodeposition of polymer and polymer?nano-material on metal wires (such as stainless steel wire). Thus we can greatly improve the property of SPME fibers and make them not only have high extraction capacity, sensitivity, flexility and stability, but also present rapid extraction /desorption rate and good fabrication controllability. In addition, by using organic medium to promote the electrodeposition of some monomers with difficult to dissolve and/or electrodeposit in aqueous medium; and by introducing/or doping carbon nano-material, IL and monomer of conductive polymers to improve the electric conductivity of nonconducting polymer films, thus we can realize the controllable fabrication of these polymer coatings. Through these ways we can make full use of different electrodeposition monomers/or polymers and greatly expand the application scope of SPME fibers prepared by electrodeposition. Meanwhile,by varying the electrodeposition parameters, solution composition and IL

英文关键词： solid microextraction；electropolymerization；ionic liquids；nanomaterials；polymeric ionic liquid