Synthesis And Applications Of A Series Of Ru(?)-Re(?) Binuclear And Ir(?) Transition Metal Complexes

In recent years,the synthesis and applications of transition metal complexes had attracted a lot of chemists' attention.Among these,the design and synthesis of special functional ligand of transition metal complexes is of great significance.Especially,Ru(?),Re(?)and Ir(?)complexes with strong spin-orbit coupling effect were introduced into the codoping system to make full use of singlet and triplet emission,and gain higher quantum yield.The studies on biological sensing had received the widespread attention.While there are relatively few studies on the synthesis of binuclear complexes containing these metals and their photophysics.In this paper,a serials of binuclear complexes with the near infrared luminescence were synthesized by introducing two different metal into the rigid ligand,which widened the research in the field of near-infrared luminescence of binuclear complexes.The main contents of this paper are as follow:In chapter one,the luminescent theory of transition metal complexes,the research in near-infrared luminescence and photocatalytic reduction of CO2 to CO of dinuclear complexes,other applications in the field of chemical sensing,and the chemical sensing application of Ir(?)metal complexes were introduced.In chapter two,a series of different rigid dinuclear Ru-Re complexes were synthesized and characterized by 1HNMR and MS.Their photophysical properties and electrochemical properties had also been comparative studied.In chapter three,four Ir(?)complexes were synthesized and characterized by 1HNMR,MS and IR.The photophysics of the complexes and the sensing of cysteine,and homocysteine were also studied.By functionalizing pyridine ligands with active aldehyde groups,the complexes could react with homocysteine or cysteine to form thiazole ring or thiazine ring which changed the electronic structure and the rigid structure of the complexes.Based on the change of their emission signal,homocysteine and cysteine could be detected by the Ir(?)complexes functionalized by aldehyde group.