本文選題：銥配合物 + 2-苯基吡啶��； 參考：《云南師范大學(xué)》2017年碩士論文

【摘要】：磷光三價(jià)銥配合物作為有機(jī)發(fā)光材料被人們廣泛研究,在于其具有發(fā)光效率高,磷光壽命短,發(fā)光顏色可調(diào)等優(yōu)勢(shì)。這樣的三價(jià)銥配合物由于其中心原子銥的d軌道上存在強(qiáng)的自旋軌道耦合,使得單重態(tài)和三重態(tài)混合,原來(lái)禁阻的三線激發(fā)態(tài)至基態(tài)的躍遷,由于系間竄越作用變得允許。最近幾年,關(guān)于銥配合物的研究,主要是通過(guò)設(shè)計(jì)合成新型配體,改變配體上的取代基團(tuán)及取代位置等方式來(lái)合成新型的銥配合物從而調(diào)節(jié)其發(fā)光波長(zhǎng),提高色純度和提高發(fā)光效率,并取得了顯著成效。因此設(shè)計(jì)合成新型結(jié)構(gòu)的銥配合物,對(duì)開(kāi)發(fā)高效、多樣的有機(jī)電致發(fā)光材料具有深遠(yuǎn)的意義。論文設(shè)計(jì)合成了以含有S=O和C=O螯合位點(diǎn)的2-(苯磺�；�)苯乙酮(2-(phenylsulfonyl)acetophenone,PSAP)、2-(對(duì)甲苯磺�；�)苯乙酮(2-(p-toluenesulfonyl)acetophenone,TSAP)和含有P=O和C=O螯合位點(diǎn)的N-(1,3-二甲基-2-氧代-1,3,2-二氮雜磷雜環(huán)己烷)苯甲酰胺(N-(1,3-dimethyl-2-oxido-1,3,2-diazaphosphinan-2-yl)benzamide,DAPB)為輔助配體,以強(qiáng)吸電子基團(tuán)-F和-CF3取代的2-苯基吡啶衍生物2-(2,4-二氟苯基)吡啶(2-(2,4-difluorophenyl)pyridine,dfppy)、2-(4-三氟甲基苯基)吡啶(2-(4-trifluoromethylphenyl)pyridine,tfmppy)、2-(2-氟-4-三氟甲基苯基)吡啶(2-(2-fluoro-4-trifluoromethylphenyl)pyridine,ftfmppy)為主配體,合成兩類新型的銥配合物。通過(guò)核磁共振、紅外光譜和質(zhì)譜對(duì)配合物進(jìn)行鑒定和表征,確定結(jié)構(gòu)與預(yù)測(cè)結(jié)構(gòu)相同。測(cè)定他們的光物理性質(zhì)和電化學(xué)性質(zhì)。測(cè)試結(jié)果表明配合物的能級(jí)間隙在2.48-2.82 eV之間,在二氯甲烷溶液中的發(fā)射波長(zhǎng)為479-517 nm,固體發(fā)射波長(zhǎng)為502-544 nm,配合物的發(fā)光量子效率為6.3-51.1%。主配體相同時(shí)PSAP和TSAP為輔助配體的配合物具有較高的熒光量子效率,以DAPB為輔助配體的配合物的發(fā)射波長(zhǎng)較長(zhǎng),與Ir(C^N)3構(gòu)型配合物相比,本文報(bào)道的兩類輔助配體合成的Ir(C^N)2(L^X)構(gòu)型配合物具有更高的發(fā)光效率。由于PSAP和TSAP為輔助配體的配合物的發(fā)光效率較高,穩(wěn)定性較好,因此將該類配合物的固體粉末用于制備藍(lán)光InGaN為基底的發(fā)光二極管,測(cè)試其發(fā)光致發(fā)光性能。二極管的發(fā)射波長(zhǎng)在507-543 nm之間,色坐標(biāo)顯示它們的發(fā)光在藍(lán)綠光和黃綠光區(qū)域。其中配合物(ftfmppy)2Ir(TSAP)的發(fā)光效率最高為5.6lm/W,配合物(dfppy)2Ir(PSAP)的色坐標(biāo)為(0.316,0.431),發(fā)光區(qū)域與白光最接近。
[Abstract]:Phosphotrivalent iridium complexes have been widely studied as organic luminescent materials because of their advantages such as high luminescence efficiency, short phosphorescence lifetime and tunable luminescence color. Due to the strong spin-orbit coupling in the d-orbit of the iridium atom in the center of the iridium complex, the transition from the excited three-wire state to the ground state, which was originally forbidden, is allowed due to the intersystem crossover between the singlet and triplet states, and the transition from the excited state to the ground state of the trivalent iridium complex is permitted. In recent years, studies on iridium complexes have been focused on the synthesis of novel iridium complexes by designing and synthesizing new ligands, changing the substituents on ligands and changing their substituent positions to regulate their luminescence wavelengths. The color purity and luminous efficiency were improved, and remarkable results were obtained. Therefore, the design and synthesis of new iridium complexes have profound significance for the development of efficient and diverse organic electroluminescent materials. In this paper, 2-( phenylsulfonyl) acetophenone (2-phenylsulfonyl) acetophenone 2-( p-toluenesulfonyl) acetophenylacetophenone (p-toluenesulfonylacetophenone TSAP) and N-Poluenesulfonylacetophenone TSAP (containing the chelating sites of Po and Con O) have been designed and synthesized, and N-TSAP containing Po and Cno chelating sites have been designed and synthesized by using 2-phenylsulfonylacetophenylacetophenone TSAP (2-phenylsulfonylacetophenone TSAP) and N-trichlorobenzene 3- dimethyl-2-diazaphosphoryl heterocyclohexane (diazaphane) benzoyl cyclohexane. N-dimethyl-3-dimethyl-2-oxido-1 (2-diazaphosphinan-2-ylphosphinan-2-ylbenzamide-DAPB) was used as an auxiliary ligand. Two new iridium complexes were synthesized from 2-fluoro-2-fluoro-4- difluorophenylpyridyl 4-diophenylpyridine pyridine 4-diphenyl-pyridine 4-trifluoromethylphenyl) pyridine 4-trifluoromethylphenylpyridine 2-fluorine-4fluoromethylphenylpyridine 2-fluoro-4- trifluoromethylphenyl) pyridine 2-fluoro-4-trifluoromethylphenylpyridyl pyridine pyridineffftmppy2 (2-fluoro-4-trifluoromethylphenylpyridyl pyridine pyridineffftmppy2). The complex was characterized by NMR, IR and MS, and the structure was the same as the predicted structure. Their photophysical and electrochemical properties were measured. The experimental results show that the energy level gap of the complexes is between 2.48-2.82 EV, the emission wavelength in dichloromethane solution is 479-517 nm, and the solid emission wavelength is 502-544 nm. The luminescent quantum efficiency of the complexes is 6.3-51.1 nm. When the principal ligands are the same, the complexes of PSAP and TSAP as auxiliary ligands have higher fluorescence quantum efficiency, and the emission wavelengths of the complexes with DAPB as auxiliary ligands are longer than those of Ir(C ^ N3 complexes. In this paper, we report that the two kinds of auxiliary ligands have higher luminescence efficiency than the other two kinds of Ir(C ~ (2 +) -N ~ (2 +) -N ~ (2 +) -L ~ (2 +) complexes. Because of the high luminescence efficiency and good stability of the complexes with PSAP and TSAP as auxiliary ligands, the solid powders of these complexes were used to prepare blue light emitting diodes based on InGaN, and their luminescent properties were tested. The emission wavelengths of the diodes are between 507-543 nm. The color coordinates show their luminescence in the blue and yellow green regions. The luminescence efficiency of the complex is 5.6lm / W.The color coordinate of the complex is 0.3160.431g, and the luminescence region is the closest to the white light.
【學(xué)位授予單位】：云南師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：O641.4;TQ422

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本文編號(hào)：1886435