以2⁃(2⁃吡啶基)苯并噻吩为主配体的两种蓝紫光二价铂配合物的合成与性质

Synthesis and Properties of Two Blue and Violet Light⁃Emitting Platinum􀃭Complexes

以2-(2-吡啶基)苯并噻吩(2-(2-pyridyl)benzothiophene,btp)作为主配体,分别以邻二氮菲[1,10]并咪唑联苯酚(2-(1Himidazo[4,5-f][1,10]phenanthrolin-2-yl)phenol,ipap)和3-甲基-6-苯基咪唑[2,1-b]噻唑(3-Methyl-6-phenylimidazo[2,1-b]thiazole,mpmt)作为辅助配体,成功合成了2个二价铂配合物[(btp)Pt(ipap)]Cl与(btp)Pt(mpmt)Cl,并得到了配合物(btp)Pt(mpmt)Cl的晶体结构。由金属-配体电荷转移引起的2种配合物发光,具有60%左右的内量子效率,发射峰在426 nm(蓝色)与381 nm(紫色)处。HOMO/LUMO轨道能级分别为-4.69 eV/-2.55 eV与-4.80 eV/-2.21 eV。单晶衍射结果表明,较低的共轭程度导致了该类配合物的短波长发射。

With 2-(2-pyridyl)benzothiophene(btp)as the primary ligand,2-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)phenol(ipap)and 3-methyl-6-phenylimidazo[2,1-b]thiazole(mpmt)as the auxiliary ligands,two platinum􀃭complexes,[(btp)Pt(ipap)]Cl and(btp)Pt(mpmt)Cl were synthesized,and the crystal structure of(btp)Pt(mpmt)Cl was determined.The luminescence of the complexes which is attributed to the metal-to-ligand charge transfer(MLCT)emission has internal quantum efficiency about 60%with emission peaks at 426 nm(blue)and 381 nm(purple).The orbital energy levels of HOMO/LUMO were-4.69 eV/-2.55 eV and-4.80 eV/-2.21 eV,respectively.The crystal structure discloses that the low conjugation of these complexes results in their short wavelength emission.CCDC:1978721,(btp)Pt(mpmt)Cl.