新型稀土配合物/笼状多面体低聚倍半硅氧烷杂化材料的制备与发光性能研究

As a kind of excellent luminescent materials, rare earth complexes usually suffered the problem of their poor stability, which restricted their potential application. Although this problem could be resolved by introducing them into inorganic base, many new problems will arise, such as existing of Si-OH, and poor further modification properties, etc. Based on the molecule functional design, a novel kind of rare earth complex/polyhedral oligomeric silsesquioxane (POSS) hybrid materials will be synthesized and studied in this project, aiming to integrate the excellent optical properties of the rare earth complex and the peculiar advantages of POSS components, and therefore to achieve high stable, high bright and high efficient rare earth complex hybrid luminescenct materials. This project will shed light on the design and preparation of novel rare earth luminescent materials. The research work in this project will be carried out on the design, synthesis, and characterization of the rare earth complex/POSS materials, and much work will be focused on the design, modification and selection of the organic ligands and the POSS precursor. Intense work will be devoted to the study of the structures and optical properties of the rare earth complex/POSS materials and the relationships between them. Through optimization and selection, a series of new rare earth luminescenct materials with potential application will be achieved.

稀土配合物具有优良的发光性能，却普遍存在稳定性差等问题，其应用也因而受到限制。传统的制备杂化材料方法可利用无机基质提高其稳定性，但往往带来其他负面效应：如残存大量硅羟基、难以进一步功能化等问题。本项目基于分子功能设计，制备新型的分子型稀土配合物/笼状多面体低聚倍半硅氧烷(POSS)杂化材料，实现两者优异性能的协同效应，从而获得高稳定、高亮、高效的稀土杂化发光材料，为新型稀土杂化发光材料的研究制备提供全新的方法，对稀土发光材料的研究和应用拓展具有积极的意义。本项目将围绕稀土配合物/POSS杂化材料的设计合成、结构和性能表征以及功能拓展等方面开展工作，重点研究该体系下的有机配体的设计合成及POSS前体的优化筛选，深入研究材料的结构及光物理性质，探索该体系的结构/性能相关性，以及新体系下稀土配合物复杂功能化的方法和规律，通过优化和筛选，获得一批具有潜在应用前景的新型稀土发光材料。

本项目将稀土配合物优异的发光性能和POSS材料独特的优点相结合，制备具有设计灵活、功能多样、稳定高效等优点的新型稀土配合物/POSS纳米杂化材料，从而解决传统稀土发光配合物常见的稳定性差、能量利用效率低等问题，对新型稀土配合物材料的研发及应用拓展具有积极的意义。项目围绕稀土配合物/POSS杂化材料的设计合成、结构和性能表征以及性能拓展等方面开展工作，重点研究了该体系下的新材料的设计、合成方法及结构/性能相关性，探索了新体系下稀土配合物功能化的方法和规律，通过优化和筛选，获得了一批具有潜在应用前景的新型近红外发光稀土/POSS杂化材料以及性能优良的光电功能材料，首次发现了POSS材料体系独特的发光现象，并从理论上进行了解释。项目发表及合作发表论文11篇，完成了项目目标。