Arylamine tetradentate cyclometalated platinum complex near-infrared electroluminescent materials as well as preparation and application thereof
A metal platinum and aromatic amine technology, applied in the field of near-infrared electroluminescent materials, can solve the problems of restricting the development of organocyclic metal platinum complexes, difficult to satisfy, low photoluminescence quantum efficiency, etc., and improve carrier transport. ability, improve energy conversion efficiency, and improve the effect of photoelectric conversion efficiency
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Embodiment 1
[0047] Cyclometallic Platinum Complex TPA-2q-PtCl 2 Synthesis
[0048]
[0049] 1.1 Synthesis of Intermediate 1
[0050] In a 100mL single-necked bottle, add 4-tert-butylaniline (537mg, 3.6mmol), 1,3-dibromobenzene (2.50g, 10.8mmol), sodium tert-butoxide (1.04g, 10.8mmol), three ( Dibenzylideneacetone)dipalladium (166mg, 0.29mmol), 1,1'-bis(diphenylphosphino)ferrocene (160mg, 0.29mmol) and toluene (40mL). Stir and heat to 120°C under nitrogen atmosphere, react for 18h, and cool to room temperature. Add 50 mL of ethyl acetate and continue stirring for 30 min. Suction filtration, the filtrate was collected, the solvent was distilled off under reduced pressure, and the mixed solution of n-hexane / ethyl acetate with a volume ratio of 20:1 was used as the eluent for column chromatography to obtain 785 mg of the product with a yield of 47.5%. 1 HNMR (400MHz, CDCl 3 )δ: 7.30 (d, J = 8.5Hz, 2H), 7.16 (d, J = 16.4Hz, 2H), 7.10 (q, J = 8.1Hz, 4H), 6.98 (t, J = 8.2Hz, 4H) ,1.33(s...
Embodiment 2
[0056] Cyclometallic Platinum Complex 3TPA-2q-PtCl 2 Synthesis
[0057]
[0058] 2.1 Synthesis of intermediate 3
[0059] The synthesis of Intermediate 3 in Example 2 is similar to the synthesis of Intermediate 1 in Example 1. A white solid was obtained with a yield of 36%. 1 HNMR (400MHz, CDCl 3 )δ:7.33(s,2H),7.31(s,4H),7.28(d,J=5.3Hz,6H),7.25(s,4H),7.19(s,2H),7.13(s,2H), 7.05(d,J=5.4Hz,10H),7.02(s,4H),1.33(s,9H),1.31(s,36H).MALDI-MS(m / z):1169.521for[M + ]. 13 CNMR (100MHz, CDCl 3 )δ: 31.46, 34.34, 120.68, 122.50, 123.23, 124.01, 124.30, 124.50, 126.14, 126.55, 127.56, 132.12, 143.67, 143.81, 144.74, 146.08, 148.23, 149.17
[0060] 2.2 Synthesis of Intermediate 4
[0061] The synthesis of Intermediate 4 in Example 2 is similar to the synthesis of Intermediate 2 in Example 1. A white solid was obtained with a yield of 32%. 1 HNMR (400MHz, CDCl 3 )δ: 8.57 (d, J = 5.3Hz, 2H), 8.04 (d, J = 8.1Hz, 2H), 7.83 (d, J = 7.9Hz, 2H), 7.57 (dd, J = 19.8, 11.9Hz, 8H),7.47–7....
Embodiment 3
[0065] Characterization of arylamine-based tetradentate cyclometal platinum complexes and their fabrication and luminescent properties of single-emitting layer polymer electroluminescent devices
[0066] Arylamine Tetradentate Cyclometallic Platinum Complexes 1 The HNMR spectrum was measured by BrukerDex-400NMR instrument, the UV-visible absorption spectrum was measured by CARY100 UV-visible spectrometer, and the photoluminescence spectrum was measured by Perkin-ElmerLS-50 fluorescence spectrometer.
[0067] Single-emitting layer polymer electroluminescent devices based on arylamine tetradentate cyclometal platinum complex phosphorescent materials include: indium tin oxide (ITO) conductive glass, polydioxyethylthiophene (PEDOT) electron blocking layer, light-emitting layer ,cathode. The light-emitting layer is composed of a host material and a dopant material. The host material is PVK, the dopant is an aromatic amine tetradentate cyclometal platinum complex phosphorescent ma...
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