新型环状d-f异金属配合物的设计、组装及荧光性能

项目名称： 新型环状d-f异金属配合物的设计、组装及荧光性能

项目编号： No.21301106

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 董文文

作者单位： 三峡大学

项目金额： 24万元

中文摘要： 本项目针对目前稀土金属配合物发光材料存在紫外区激发以及能量传递效率、量子产率、荧光寿命低等瓶颈问题，借助d区金属有机生色基团在可见光区域的良好吸收性以及环状结构的多能量传递途径，从分子水平出发，设计合成环状d-f异金属配合物发光材料；系统研究有机基块弯折角度及配位选择性、金属配位环境、pH变化等对构筑异金属配合物的影响规律，建立和发展异金属配合物的晶体工程学合成方法和结构控制的新方法；从理论和实验相结合的角度探究d区金属有机生色团、异金属间距、环形能量传递途径、f区金属发光单元等对异金属配合物的激发波长、发光效率、量子产率及荧光寿命的影响规律，探讨环形d→f能量传递规律及异金属结构-性能之间的构效关系，阐明发光机理，总结其中规律，丰富敏化稀土发光的思路和方法，为开发低能量光激发、高发光效率的d-f异金属发光材料提供理论和实验基础。

中文关键词： d-f异金属配合物；近红外发光；能量传递；；

英文摘要： Applications of the lanthanide luminescent materials developed currently are limited due to their typical disadvantagies, such as ultraviolet excitation, low energy transfer efficiency, low quantum yield and short luminescent lifetimes. This project will focus on design and synthesis of novel cyclic d-f heterometallic complexes from the molecular level, based on the fact that d metal complexes have efficient absorption in the visible region as sensitizers, and possess multiple delivery pathways of energy transfer in cyclic structure. In order to estabilish the new synthesis method and structure control method of of heterometallic complexes, we will further investigate a series of effects on the synthesis of heterometallic complexes, namely the bending angle and coordination selectivity of organic blocks, metal coordination environments, pH values and etc. Moreover, from the theoretical and practical perspective, we will build the relationship between the d-block metal chromophore, distance of metals, pathway of d→f energy transfer and f-block matel luminescent unit with excited wavelength, luminescent efficiency, quantum yield and lifetime. From this research, we seek to clarify the luminescent mechanism and enrich the the methods of sensitizing lanthanide's luminescence. Finally, we hope to provide theoretical

英文关键词： d-f heterometallic complexes；near-infrared；energy transfer；；