对金属离子具有荧光、电化学双重响应的多孔荧光薄膜的电化学制备、结构调控与性能研究

金属离子的检测与人类生活息息相关。但可实际应用的金属离子薄膜荧光检测发展缓慢，主要是传统方法制备的荧光薄膜比较致密，存在着响应时间长、选择性差、灵敏度低、膜稳定性差等问题。针对这些问题，本项目拟采用电化学聚合法制备对金属离子具有荧光、电化学双重响应的荧光薄膜，来开展金属离子的检测工作。电化学聚合法是一种原位交联法，所得薄膜稳定，具有无序、交联网状结构。基于电聚合薄膜的这些特点，我们设计合成一系列具有金属离子响应、可电化学聚合的荧光材料，它们的电聚合薄膜不但可直接应用到金属离子荧光检测中，也可作为化学修饰电极应用到金属离子的电化学检测中。进一步，可以进行金属离子的荧光、电化学双重检测，这种金属离子的双重检测，不但将荧光检测的高灵敏性和电化学检测的高选择性结合起来提高了检测的性能，也可以形成互补来拓宽可检测的金属离子范围。

The detection of metal ions plays important roles in many fields, such as biology, environment, industry and so on. However, the fluorescent films sensors with applied potential in metal ions detections develop slowly. This is mainly due to compacted stacking of the traditional films, which lead to long response time, weak sensitivity, low selectivity and stability. The electrochemistry polymerization (EP) is an in-situ cross linking reaction and could get stable, cross linking porous films. Basing these properties of EP films, we firstly propose to apply EP films to the metal ions fluorescence detection. By molecular design, a series of organic/polymers materials with metal ions response and electrochemistry activity are synthesized. And their EP film are used as metal ions fluorescence sensor, further, the EP films could be used as chemical modified electrode to achieve the electrochemistry detection of metal ions, which could be supplementary to the fluorescent detection of metal ion. This combination of fluorescence and electrochemistry detections to metal ions could not only improve the sensitivity and selectivity, but also expand the detected range of metal ions.