构筑形貌可控、检测灵敏度高及物化性质稳定的双发射荧光传感体系是无机功能材料领域的一个研究热点。本项目拟基于Zn原子化学键作用，构筑具有双发射荧光特性的Zn2(Si,Ge)O4:Mn2+/Zn-MOFs异质结构，协同实现Zn2(Si,Ge)O4:Mn2+微纳米晶的高效荧光发射和Zn-MOFs的可调控荧光识别功能，获得系列形貌/结构可控、发光效率高、稳定性好且具有特异性荧光响应的异质结构双发射荧光传感体系。考察该异质结构体系的化学组成、组装方式、表界面性质与双荧光发射特性之间的构效关系；探讨异质结构的表界面识别功能及光化学传感机制和作用原理；揭示不同发光中心的激发态调控原则、实现高灵敏度荧光双发射性能比例调控；进一步开发其在比率荧光测温和重金属离子探测领域的应用，为优化和制备新型双发射荧光传感材料提供材料设计思路、关键制备技术与基础理论依据。

Construction of new dual-emission luminescence sensing materials with controllable morphology, high sensitivity and stable physical/chemical properties becomes one of the hot research topics in the field of inorganic functional materials. Based on the chemical coordinated bond effect of Zn atoms, this project proposed the design and synthesis of Zn2(Si,Ge)O4:Mn2+/Zn-based metal-organic frameworks (MOFs) heterostructure with dual-emission luminescence characteristic. The Zn2(Si,Ge)O4:Mn2+/Zn-MOFs heterostructure obtained is composed of inorganic micro/nano crystals showing high efficient emission and luminescence metal-organic framework with adjustable luminescent identification function. The heterostructure features controllable morphology and structure, high chemical and thermal stability, and high sensitivity. Screening of heterostructure with high luminescence efficiency, high anti-interference resistance, and specific luminescence responsibility of Zn2(Si,Ge)O4:Mn2+/Zn-MOFs can be developed as a dual-emission luminescent probe. This project will also try to clearly investigate the photochemical sensing and interaction mechanisms of the dual-emission heterostructure, and the principles on how to control the excitation states of different luminescent centers to achieve the ratiometric control of dual-emission sensitively will be also demonstrated. Furthermore, the project will try to investigate its potential applications in the field of ratiometric luminescence sensing of temperature and different heavy metal ions. The implementation of the project will be important and help to provide rational design principles, optimized preparation technologies, and potential theory basis for the study of novel dual-emission luminescence sensing materials.