稀土UCNP/MOF复合材料的合成及荧光性能的研究

At present, the design of nano-fluorescent probe composite with strong optical properties is still a difficult and hot area in the field of chemistry and materials. Based on this, the subject of rare earth-based UCNP / MOFs luminescent materials as the research object, to seek better fluorescence properties of rare earth upconversion nano material UCNP, select the appropriate metal-organic framework material MOF, the use of hydrothermal, solvothermal, microwave assisted Method to assemble a rare earth-based UCNP / MOFs material with novel fluorescence luminescence properties. At the same time to explore the potential of the target compounds in the field of fluorescence sensors. In addition, this topic will explore the relationship between macroscopic fluorescence characteristics and microstructure elements from a theoretical point of view, and provide theoretical and experimental evidences for the synthesis of new nano-composite fluorescent probe materials.

目前,设计具有强光学性质的纳米荧光探针复合材料依然是化学和材料领域的难点和热点。基于此，本课题以稀土基UCNP/MOFs发光材料为研究对象，寻求具有较好荧光性质稀土上转换纳米材料UCNP，选择适当的金属-有机框架材料MOF，利用水热、溶剂热、微波辅助等方法，组装出具有新型荧光发光性能的稀土基UCNP/MOFs材料。同时探索目标化合物在荧光传感器领域中的潜在应用。另外，本课题将从理论角度探讨宏观荧光特性与微观结构基元之间的关系，为合成新型纳米复合荧光探针材料提供理论及实验上的依据。

光子上转换是低能量光子辐照下高能量光子发射的非线性反斯托克斯过程。上转换纳米粒子（UCNPs）具有荧光背景低、反斯托克斯位移较大、化学性质稳定、生物相容性好等优势，因此被广泛应用于药物递送、检测、细胞成像等方向。近年来，上转换纳米颗粒被用于与其他材料如 MOFs组成复合材料。复合材料的形成不仅可以解决上转换纳米粒子易聚集等问题，更可将二者优势结合，表现出多种荧光性质。