基于两亲性镧系金属配合物的超分子传感界面的构建及其对磷酸衍生物的高效传感

项目名称： 基于两亲性镧系金属配合物的超分子传感界面的构建及其对磷酸衍生物的高效传感

项目编号： No.21273143

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： 刘静

作者单位： 陕西师范大学

项目金额： 82万元

中文摘要： 基于金属配合物的均相传感器虽能克服阴离子的水合作用而与其形成稳定配位键，但仅靠这种单一作用很难实现对水相阴离子的高效检测。比较而言，包含多个结合位点的受体分子可通过分子的变构作用实现对底物离子的协同络合，从而大幅度提高传感器的综合性能。然而，业已报道的几例协同作用体系均存在构建难度大、结合位点少、预组织能力不理想等问题。为此，本课题拟立足已有工作基础，设计合成多个系列结构新颖的两亲性镧系金属配合物；组装一系列具有不同结构特点的超分子传感界面；考察组装体对磷酸衍生物的传感性能；研究传感性能对组装体结构的依赖性；揭示组装体形成和超分子界面传感机理。相信通过构建基于两亲性镧系金属配合物的超分子传感界面，考察其光物理行为和传感特性，研究与之相关的基本科学问题，必将有助于拓展阴离子传感器设计思路，丰富阴离子传感器研究内容，提升阴离子传感器创制水平，为新型高效阴离子传感平台搭建奠定基础。

中文关键词： 自组装；传感界面；荧光；镧系金属配合物；

英文摘要： Although metal complex-based chemosensors can bind anions effectively by overcoming the high hydration energy of anions in aqueous media, it is still a big challenge to realize a highly efficient anion detection just through the single interaction between sensor and anions. Compared with simple molecular sensors, chemosensors with multi-binding sites can capture anions cooperatively through a positive homotropic allosterism, which can improve the sensor performance dramatically. However, the reported positive homotropic allosteric systems still bear some drawbacks such as complicated synthesis route, limited binding sites and poor pre-organization ability etc. Based on our previous research work, a series of novel amphiphilic Ln(III) complex will be synthesized; The supramolecular sensing interface with different morphology will be constructed; The sensing performance of the supramolecuar interface to various phosphate derivatives will evaluated. The dependence of the sensing performance on the structure of supramolecular assembly will be studied; The forming process and the sensing mechanism of the self-assembly will be investigated by different techniques. It is believed that these kinds of studies will be favorable for broadening the design strategy, enriching the content and boosting the development of anion

英文关键词： Self-assembly；Sensing interface；Luminescence；Lanthanide complex；