Preparation Of Metal Coordination Polymer And Its Temperature Sensing Properties

In recent years,as a kind of crystal materials,MOFs have been widely used in catalysis,gas adsorption,light emitting devices and chemical sensors.Therefore,luminescent MOFs have attracted more and more attention,mainly because of their potential applications as fluorescent sensors.The most common detection method of light sensor based on MOF is to change its temperature and observe its fluorescence intensity.In this paper,two series of MOFs were synthesized by doping a series of lanthanide metals and Zn²⁺with H₈L ligand,and their luminescent temperature sensing properties were studied respectively.This paper mainly includes the following two parts:Part I:Two luminescent MOFs were synthesized by solvothermal method using H8L ligand doped Zn²⁺.Coordination polymers 1 and 2 are shown as unique 2D sandwich layers.Luminescence studies show that 1 and 2 emit strong blue fluorescence and have a long life.More importantly,1 and 2 can be applied to potential temperature sensors with a very good linear relationship between strength and temperature.In the second part,a series of luminescent MOFs were synthesized by solvothermal method using H₈L ligand-doped lanthanide metals.These MOFs have a three-dimensional layer structure.The co-doped Ln-MOF9 exhibits high relative sensitivity in the temperature range（80-280 K）,which is closely related to the energy level distribution of the ligand.