本项目旨在发展二维纳米材料制备及其结构功能调控新方法，筛选具有金属离子识别作用的环状大分子为模型，综合应用电子显微技术及光谱学手段研究二维纳米材料、金属离子及环状大分子三者之间相互作用的分子动力学过程，从纳米材料和环状大分子的结构与性质两个角度研究其相互作用机制。筛选能同时与环状大分子及重金属离子相互作用的二维纳米材料，研究该材料对环状大分子金属配合物形成的催化作用，并进一步利用二维纳米材料与重金属离子对金属配合物的协同催化效应，研究环状大分子金属配合物形成前后其吸收和荧光光谱的变化规律，探究配合物吸收光谱的变化对二维纳米材料荧光性质的影响规律，建立一系列简单快速、高选择性、高灵敏度、多信号的重金属离子传感平台，用于环境水体样品分析，为二维纳米材料催化性能及其应用研究提供新的研究视角和思路，对拓展二维纳米材料在环境分析化学的应用领域具有重要意义。

The project aims on the preparation as well as the structural and functional regulation of two dimensional nanomaterials. By screening some important macrocyclic compounds involving the metal ion recognition ability, the molecular interaction kinetics among nanomaterials, metal ions and macrocyclic compounds can be monitored by employing the electron microscope techniques as well as the spectroscopy methods. And moreover, the interaction mechanism among them can be investigated from the perspective of the structural/optical properties of nanomaterials and macrocyclic compounds, respectively. We plan to select dimensional nanomaterials that can interact with both metal ions and macrocyclic compounds and then investigate their performance as catalysts to accelerate the coordination reaction between metal ions and macrocylic molecules. Furthermore, by simultaneous use of the nanomaterials and the metal substitution reactions, the co-catalytic effect of two accelerators can be investigated, and the evolution of the absorption/fluorescence spectra of macrocyclic compounds as well as the change of the fluorescent properties of nanomaterials as a result of the metal complex formation can be recorded for the construction of simple, sensitive, selective and multi-signal platform for heavy metal ion sensing, which can be further applied to water sample detection. The proposed methods provide new insights in the catalytic effect of nanomaterials and demonstrate great potential on their applications in the field of environmental analytical chemistry.