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以2-(菲-9)-吡啶、1-(菲-9)异喹啉和喹喔啉并[2,3-l]菲为配体,合成了3个新颖的红色到近红外磷光配合物(pypt)2Ir(acac)、(sqpt)2Ir(acac)和(qupt)2Ir(acac).对这些配合物的吸收、发射光谱和电化学性质进行了研究,结果发现,菲取代基的性质主要影响配合物的LUMO能级,随着菲取代基共轭程度的增加,吸收光谱和发射光谱红移,光致发光(PL)光谱从619 nm红移到704 nm.将4%的(sqpt)2Ir(acac)掺杂在PVK+PBD主体材料中制备了掺杂磷光发光器件,器件电致发光(EL)光谱的λmax为704 nm,器件的EL光谱从红色一直延伸到近红外区域.
Three novel red to near-infrared phosphorescence complexes were synthesized with 2- (phenanthrene-9) -pyridine, 1- (phenanthrene-9) isoquinoline and quinoxaline [2,3- Absorption, emission spectra and electrochemical properties of these complexes were studied and it was found that the nature of the phenanthrene substituent (s) Mainly affected the LUMO level of the complex, red-shifted the absorption and emission spectra with increasing the conjugation degree of the phenanthrene substituent, and the PL spectra shifted from 619 nm to 704 nm. The 4% ) Doped with 2Ir (acac) doped phosphorescent light-emitting devices were prepared in PVK + PBD host material. The λmax of electroluminescence (EL) spectrum of the device was 704 nm. The EL spectrum of the device extended from red to the near infrared region.