An organic electroluminescent compound
A technology of luminescence and compounds, which is applied in the field of organic electroluminescence compounds, can solve problems such as poor device efficiency and lifespan, unsatisfactory users, short blue light wavelength, etc., achieve high luminous efficiency and color purity, promote development and use long life effect
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Embodiment 1
[0044] Example 1 Preparation of compound 3
[0045]
[0046] Step 1: Synthesis of Intermediate 1
[0047]
[0048] Dissolve raw material 1 (11.6 g, 55 mmol) and methyl 2,5-dibromoterephthalate (17.6 g, 50 mmol) in 200 ml of toluene solution, then add 50 ml of 2M aqueous sodium carbonate and 50 ml of ethanol was degassed with nitrogen for 30 minutes, and the catalyst tetrakis(triphenylphosphine) palladium (Pd(PPh 3 ) 4 , 3.5 g, 3.0 mmol), under stirring conditions, heated to 100 ° C, reacted for 15 hours, cooled to room temperature, added dichloromethane and deionized water, extracted the organic phase, dried with anhydrous magnesium sulfate, filtered, reduced Compressed, concentrated, separated and purified by silica gel column to obtain about 21.6 g (41 mmol) of pure intermediate 1, the yield is about 82%.
[0049] Mass spectrum MS of intermediate 1 [ESI + ] m / z = 526.22 (theoretical value is 526.14).
[0050] Step 2: Synthesis of Intermediate 2
[0051]
[0052]...
Embodiment 2
[0070] Example 2 Preparation of Compound 10
[0071]
[0072] Steps 1 to 4: Synthesis of Intermediates 1-4
[0073] The synthesis method and specific steps of intermediate 1-4 are the same as those in Example 1.
[0074] Step 5: Synthesis of Intermediate 6
[0075]
[0076]
[0077] Aniline (9.3 g, 100 mmol), 4-trifluoromethyl-1-bromobenzene (22.4 g, 100 mmol), bis(dibenzylideneacetone) palladium (1.7 g, 3 mmol), tri-tert-butyl A mixture of phosphine (1.2 g, 6 mmol) and toluene (200 ml) was heated to 90°C under an argon stream, and after adding sodium tert-butoxide (0.6 g, 6 mmol), it was heated to 110°C under an argon atmosphere , stirred for 12 hours. The reaction mixture was cooled to room temperature, and water was added for liquid separation. The solvent of the obtained organic layer was concentrated, and the obtained solid was purified by silica gel column chromatography to obtain intermediate 5 (16.6 g, 70 mmol), with a yield of 70%.
[0078] Mass spectrum...
Embodiment 3
[0083] Example 3 Photoluminescence Spectrum Detection
[0084] Dissolve compound 3 and compound 10 in toluene solvent, the concentration is about 10 -4 mol / L, on the E1PLMM010 photoluminescence spectrometer, with 300 nm as the excitation light, the main peaks of the photoluminescence (PL) spectra of the two are shown in Table 1.
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