Structure And Optical Properties Of Low Dimensional Metal Halides Based On Lead And Manganese

In recent years,low-dimensional organic-inorganic hybrid metal halides(OIMH)have received extensive attention from researchers due to their excellent photoelectric properties.Among these materials,low-dimensional OIMH materials based on lead and manganese have unparalleled advantages in many fields such as lighting,sensing,photoelectric conversion,and ferroelectrics and so on.These materials usually consist of nitrogen-based organic cations and metal halide anion frameworks.By using different cationic templates,we can obtain a variety of hybrid materials with different structures and excellent performance.In addition,based on low-dimensional OIMH materials which have been reported,multi-component OIMH materials and non-stoichiometric compounds can be obtained by central atom doping,so that people can change luminescence performance easily.It is also possible to achieve changes of band gap or emission wavelength by anion doping method.Herein,we synthesized a series of low-dimensional OIMHs based on lead and manganese by solvothermal method,anti-solvent assisted crystallization method,volatilization method,and grinding method,respectively,and focused on their luminous properties and stabilities.The specific works are as follows:(1)Synthesized three new chiral lead-based OIMH materials and focus on the differences in their photoluminescence characteristics.(2)Synthesized six manganese-based OIMHs with thiamine,4,4’-dipyridylamine and histamine.focus on their photoluminescence and structural transformation.(3)Synthesized a pair of manganese-based chiral OIMHs using 3-aminoquinine cations,and achieved green phosphorescent emission through central atom doping.In addition,a new pair of chiral ABX2Y type sulfate-containing perovskite enantiomers were obtained by anion doping.