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一系列含氟苯基异喹啉配体铱(Ⅲ)配合物及其低效率滚降性能的密度泛函理论研究(英文)
A series of iridium(Ⅲ)complexes with fluorophenyl isoquinoline ligand and low-efficiency roll-off properties: A density functional theory study
【摘要】 研究了将2个主要配体和3个辅助配体结合形成6种以过渡金属为核心原子的Ir配合物的理论意义,以确定一些合适的有机发光二极管OLED材料。通过利用电子结构、前线分子轨道、最小单线吸收、三重激发态和密度泛函理论得出的发射光谱数据,研究了这6种Ir配合物,包括(piq)2Ir(acac)、(piq)2Ir(tmd)、(piq)2Ir(tpip)、(fpiq)2Ir(acac)、(fpiq)2Ir(tmd)和(fpiq)2Ir(tpip),其中piq=1-苯基异喹啉,fpiq=1-(4-氟苯基)异喹啉,acac=(3Z)-4-羟基戊-3-烯-2-酮,tmd=(4Z)-5-羟基-2,2,6,6-四甲基庚-4-烯-3-酮,tpip=四苯基亚氨基二膦酸酯。这些配合物都具有较低的效率滚降性能,尤其是(fpiq)2Ir(tpip)。目前,一些研究人员已通过Suzuki-Miyaura偶联反应成功合成了与(piq)2Ir(acac)极为相似的化合物。
【Abstract】 We have examined the theoretical implications of combining two main and three auxiliary ligands to form several Ir(Ⅲ)complexes featuring a transition metal as their core atom to identify some appropriate organic lightemitting diode (OLED) materials.By utilizing electronic structure,frontier molecular orbitals,minimum single-line absorption,triplet excited states,and emission spectral data derived from the density functional theory,the usefulness of these Ir(Ⅲ)complexes,including (piq)2Ir(acac),(piq)2Ir(tmd),(piq)2Ir(tpip),(fpiq)2Ir(acac),(fpiq)2Ir(tmd),and(fpiq)2Ir(tpip),in OLEDs was examined,where piq=1-phenylisoquinoline,fpiq=1-(4-fluorophenyl) isoquinoline,acac=(3Z)-4-hydroxypent-3-en-2-one,tmd=(4Z)-5-hydroxy-2,2,6,6-tetramethylhept-4-en-3-one,and tpip=tetraphenylimido-diphosphonate.These complexes all have low-efficiency roll-off properties,especially (fpiq)2Ir(tpip).Some researchers have successfully synthesized complexes extremely similar to (piq)2Ir(acac) through the Suzuki-Miyaura coupling reaction.
【Key words】 density functional theory; organic light-emitting diodes; luminescent materials; Ir(Ⅲ) complexes;
- 【文献出处】 无机化学学报 ,Chinese Journal of Inorganic Chemistry , 编辑部邮箱 ,2025年06期
- 【分类号】O641.4
- 【下载频次】8