The Synthesis Of Nitrogen-containing Bidentate Ligands And Corresponding Complexes And Study On Luminescent Performances

Research on organic light-emitting diodes (OLED) has been actively pursued in last three decades because of their numerous applications in flat-panel displays and lighting sources and unique advantages in the field of modern display technique. The device performance has been improved by modifying the molecular structure and optimizing the device configuration. Nitrogen-containing bidentate ligands have been extensively used to synthesize luminescent metal complexes. It has been shown that the introduction of charge transporting groups into emissive molecules can improve the device performance. The purpose of this thesis is to design and synthesize novel nitrogen-containing bidentate ligands and corresponding metal complexes as well as develop the application of synthesized complexes in OLED fields.1,Two nitrogen-containing bidentate ligands (DPOP and F-TPIP) were synthesized. Triphenylamine group was introduced into F-TPIP, and oxadiazole moieties were introduced into DPOP simultaneously.2, With ligand F-TPIP corresponding Re (I) complexes [Re(CO)3(F-TPIP)]Br(1)were synthesized and its photophysical properties were studied.3, [Cu(POP)(DPOP)]BF4(2) were synthesized by utilizing bis[2-(diphenylphosphino) phenyl]-ether (POP) as the first ligand and DPOP as the second ligands, its photophysical properties were studied.4, [Ru(phen)2(DPOP)]Cl2(3) and [Ru(phen)2(DPPA)]Cl2(4) were synthesized by utilizing [Ru(phen)2]Cl2 as the first ligand and DPOP , F-TPIP as the second ligands. The preparation and oxygen sensing properties of optical materials based [Ru(phen)2(DPOP)]Cl2(3) assembled in a mesoporous silicate (MCM-41) are described, good sensitivity(I0/I100) is obtained.5,Eu(DBM)3(DPOP) (5) and Eu(DBM)3(F-TPIP) (6) were synthesized by using DPOP and F-TPIP as ligands. The effects of ligands on photophysical of these complexes were investigated.