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A blue or/and green light-emitting mononuclear copper[i] complex material
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A complex, green light technology, used in luminescent materials, compounds of Group 5/15 elements of the periodic table, copper organic compounds, etc.
Active Publication Date: 2017-08-11
江苏纳兹博材料科技有限公司
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[0003] Although these heavy metal complexes have the advantages of high quantum efficiency and long emission life, they also have certain disadvantages, such as being scarce in the earth's crust and difficult to mine, and may cause shortage of raw materials after large-scale application.
In addition, such heavy metal compounds are usually toxic, and their large-scale application will bring direct toxicity to production and users, and cause serious environmental pollution
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Embodiment 1
[0053] This embodiment provides a mononuclear copper [I] complex material emitting blue-green light, and its structural formula is:
[0054] , its preparation method is: in ice-water bath, N 2 Under protection, a solution containing 1 mmol of n-butyllithium (n-BuLi) (concentration: 2.5 mol / L) was added dropwise to tetrahydrofuran containing 1 mmol of carbazole, N 2 The reaction was stirred for 1 hour under protection; then a THF solution containing N,N'-dicyclohexylcarbodiimide (DCC) (1 mmol, 206.3 mg) was added dropwise at low temperature, and stirring was continued for 1 hour at low temperature, and then recovered to room temperature; the solution was then transferred to a solution containing 1 mmol POPCu (MeCN 2 )BF 4 (POPCu(MeCN 2 )BF 4 Synthetic reference: G.J. Kubas, Inorg.Synth., 1979, 19, 90-92) in tetrahydrofuran solution, N 2 Refluxed overnight under protection to finally obtain a yellow-green solution; after drying, the crude product was subjected to column c...
Embodiment 2
[0057] This embodiment provides a mononuclear copper [I] complex material emitting blue-green light, and its structural formula is:
[0058] , the preparation method is basically the same as that in Example 1, except that 1-bromobenzene is reacted with n-butyllithium (n-BuLi) solution, and finally 1.26g (yield 74%) is obtained, which has a wavelength of 350nm The emission spectrum under light excitation is shown in figure 2 Shown, specifically as described in the following reaction process:
[0059] .
Embodiment 3
[0061] This embodiment provides a blue light-emitting mononuclear copper [I] complex material, its structural formula is:
[0062] , its preparation method is basically the same as that in Example 1, the difference is that CH 3 I, then reacted with N,N'-diisopropylcarbodiimide (DIC) (1mmol, 127.13mg) to finally obtain a light yellow solution, after drying, the crude product was subjected to column chromatography, and the stationary phase was silica gel. The mobile phase is a mixture of dichloromethane and petroleum ether (10:1), and finally 0.48g (yield 64%) is obtained. Its emission spectrum under 350nm wavelength light excitation is as follows image 3 shown.
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Abstract
The invention relates to a monomer copper (I) complex material used for blue or / and green light emission. Structure general formula of the monomer copper (I) complex material is represented by a formula in the invention, wherein one symbol is used for representing an amidine derivative ligand, and another symbol is used for representing two independent aromatic phosphine ligands or bridge-linked aromatic phosphonic bidentate ligands. The monomer copper (I) complex material is a neutral copper (I) complex. Compared with ionic complexes, the neutral copper (I) complex possesses excellent stability in vacuum evaporation because that no counter ion exists, so that application prospect is promising. The monomer copper (I) complex material possesses excellent stability because that no other ligating atom exists, and conversion into ionic copper (I) complex caused by reaction with surrounding environment is not easily caused; the complex luminous zone is mainly distributed in the blue light region, the green light region, or the blue-green light region. The monomer copper (I) complex material can be used for organic electroluminescence devices and sensors.
Description
technical field [0001] The invention belongs to the field of luminescent materials, and relates to a blue or / and green light material, in particular to a blue or / and green light-emitting mononuclear copper [I] complex material. Background technique [0002] Organic electroluminescence (OLEDs) is the third-generation display and lighting technology with broad application prospects; among them, luminescent materials are the most important. In order to realize full white light display, materials with three primary colors of blue, green and red emission are required. Transition metal complexes have attracted extensive attention due to their high-efficiency phosphorescence in solution at room temperature, and they have been used as efficient phosphorescent materials in OLEDs. In 1998, Prof. Forrest and Prof. Thompson created a new field of organic phosphorescence electroluminescence by studying the phosphorescent material platinum octaethylporphyrin (PtOEP). In the same year, p...
Claims
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