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| 本文以銥的氯橋二聚體(dfppy)2Ir(μ-Cl2)Ir(dfppy)2在堿性條件下和乙酰丙酮反應(yīng)合成出高效磷光材料二[2-(2,4-二氟苯基)吡啶-C2,N'](乙酰丙酮)合銥(III) Ir(dfppy)2(acac)。通過核磁共振譜(1H NMR、13C NMR)、紅外光譜和單晶X射線衍射等表征手段確定了分子結(jié)構(gòu),用高效液相色譜法(HPLC)測(cè)試了純度,利用紫外-可見吸收光譜和光致發(fā)光光譜對(duì)其光物理性能進(jìn)行了測(cè)試。結(jié)果表明:Ir(dfppy)2(acac)為電中性八面體配合物,Ir-O鍵的平均長(zhǎng)度為0.2160(14) nm,而Ir-C鍵的平均長(zhǎng)度0.1998(11) nm,Ir-N鍵的平均長(zhǎng)度為0.2030(15) nm,在484 nm處出現(xiàn)了較強(qiáng)的藍(lán)光發(fā)射,其合成產(chǎn)率大于90%,純度為99.70%,該方法適于Ir(dfppy)2(acac)的批量制備。 |
| In this paper, we prepared the compond [2-(2,4-difluorobenzene)pyridine-C2,N'](acetylacetone)Ir(III) Ir(dfppy)2(acac) by reaction of (dfppy)2Ir(μ-Cl2)Ir(dfppy)2 and acetylacetone, using one procedure under alkaline condition. This compomnd is a kind of high-performance phosphorescent material. Molecular structure of the product was confirmed by 1H NMR,13C NMR,IR and single crystal X-ray diffraction. And we investigate the photophysical properties using UV-vis and PL. We get the conclusion that Ir(dfppy)2(acac) is octahedral coordination compound with electric neutrality, and the average bond lengths are Ir-O 0.2160(14) nm, Ir-C 0.1998(11) nm, Ir-N 0.2030(15) nm, also we found that strong blue light excited at 484 nm. The yield was 90% and purity was 99.70%. The reaction is favorable for mass product of compond Ir(dfppy)2(acac). |
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