Red-light metal complex and organic electroluminescent device thereof
A technology of metal complexes and red light, applied in the direction of electric solid devices, electrical components, luminescent materials, etc., to achieve the effects of reducing interaction force, reducing band gap, high luminous efficiency and power efficiency
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[0061] The present invention provides a method for preparing a red light metal complex represented by formula (I), including:
[0062] Reacting a compound of formula (II) with iridium chloride trihydrate to obtain an intermediate;
[0063] Reacting the intermediate with acetylacetone to obtain the red light metal complex represented by formula (I);
[0064] or
[0065] Reacting a compound of formula (II) with iridium chloride trihydrate to obtain an intermediate;
[0066] Reacting the intermediate with the compound of formula (II) to obtain the red light metal complex represented by formula (I);
[0067]
[0068] Where R 2 Independently selected from a C1-C10 alkyl group, a C6-C25 aryl group, a C6-C25 heterocyclic aryl group; Ar is a C6-C30 heterocyclic aryl group.
[0069] The present invention does not limit the source of iridium chloride trihydrate, and it may be commercially available.
[0070] The present invention does not limit the source of the compound of formula (II), it can be c...
Example Embodiment
[0138] Example 1
[0139]
[0140] Under the protection of argon, add compound (1) (1.56g, 5mmol), 4-iodotriphenylamine (4.22g, 11.39mmol), cuprous chloride (0.20g, 2mmol), o-phenanthroline in a round bottom flask Pholine (0.79g, 4mmol), potassium hydroxide (2.24g, 40mmol) and p-xylene (50mL) were stirred vigorously and heated to reflux for 36 hours. After the reaction, cool to room temperature, extract with ethyl acetate, separate the layers, wash the organic phase with water three times, dry the organic phase with anhydrous sodium sulfate, filter the organic phase, spin dry, and use dichloromethane / petroleum ether as the elution The agent was separated by silica gel column chromatography and dried to obtain a pale yellow solid with a yield of 45%. After NMR identification, the results are as follows: 1 HNMR(400MHz,DMSO)[ppm]:δ7.75(s,1H),7.73(s,1H),7.67(s,1H),7.65(s,1H),7.61(d,J=1.7Hz,1H ),7.48(dd,J=8.1,1.9Hz,1H),7.32–7.25(m,8H),7.08–6.95(m,20H),1.97–1.86(m,4H),0.27(t,J=7.3 H...
Example Embodiment
[0142] Example 2 Ligand DTPAA-Flpy-CF 3 Synthesis
[0143] Under the protection of argon, add 2-chloro-5-trifluoromethylpyridine (0.44g, 2.44mmol), compound (3) (2.34g), Pd 2 (dba) 3 (0.11g, 0.12mmol), s-phos (0.25g, 0.61mmol) and 2M potassium carbonate solution (10mL) were added to 80mL of toluene, heated to reflux, and reacted for 24 hours. After the reaction, it was extracted with ethyl acetate, separated into layers, washed with water until it was neutral, and dried with anhydrous sodium sulfate. After filtration and spin-drying, silica gel column chromatography was performed with petroleum ether / dichloromethane as eluent. After drying, a yellow solid was obtained with a yield of 51%. After NMR identification, the results are as follows: 1 H NMR(400MHz,DMSO)[ppm]:δ9.04(s,1H),8.27(s,2H),8.21(s,1H),8.19-8.10(m,1H),7.86(d,J=8.0 Hz, 1H), 7.82 (s, 1H), 7.36-7.23 (m, 8H), 7.14-6.92 (m, 20H), 6.52-6.47 (m, 1H), 5.75 (s, 1H), 0.86 (s, 4H), 0.31(t, J=7.1Hz, 6H). 13 C NMR(101MHz, C 6...
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