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CuIN2P type cuprous complex luminescent material with yellow-green phosphorescence

A luminescent material, yellow-green technology, which is applied in the field of organic electroluminescent materials and luminescent materials, can solve the problems that the luminous efficiency does not meet the application requirements, is limited, and the inhibition of excited state distortion is not ideal, so as to achieve good phosphorescent emission performance, The effect of simple equipment and low production cost

Inactive Publication Date: 2015-11-04
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ligands used in the current research are limited by o-phenanthroline and bisphosphine ligands, and the suppression of excited state distortion is not ideal, and its luminous efficiency has not yet met the application requirements.

Method used

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  • CuIN2P type cuprous complex luminescent material with yellow-green phosphorescence
  • CuIN2P type cuprous complex luminescent material with yellow-green phosphorescence
  • CuIN2P type cuprous complex luminescent material with yellow-green phosphorescence

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Experimental program
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Effect test

Embodiment 1

[0030] Preparation of a large amount of phosphorescent complex CuI(TXP-2,4) (DAF) microcrystalline samples: weigh 0.5mmol of CuI and dissolve it in 25mL of acetonitrile, weigh 0.5 of tris(2,4-xylyl)phosphine Dissolve the ligand in 15mL of acetone, mix the two solutions, and stir to make it fully undergo a coordination reaction to obtain a colorless solution A; then weigh 0.5mmol of DAF ligand and dissolve it in 15mL of acetone, and then add this solution to In the above solution A, stir to make it fully take place in the coordination reaction, and finally the obtained orange reaction liquid is rotary evaporated to remove all solvents, and vacuum dried to obtain orange granular fine crystal powder as the product, with a yield of 96% (calculated as Cu) . Calculated by elemental analysis (C35H35N2PCuI): C, 59.57%; H, 4.96%; N, 3.97%. Experimental values: C, 59.81%; H, 4.93%; N, 3.89%. IR (KBr pellet, cm -1 ): 3425m, 2963m, 2914m, 1913w, 1600s, 1571m, 1477s, 1445s, 1413vs, 1385...

Embodiment 2

[0032] Synthesis of single crystal of phosphorescent cuprous complex CuI(TXP-2,4)(DAF): Dissolve CuI (0.019g, 0.1mmol) in 5ml of acetonitrile, ligand 4,5-diazafluorene (0.017g , 0.1mmol) and tris(2,4-xylyl)phosphine (0.034g, 0.1mmol) were dissolved in 5ml of acetone, after complete dissolution, the two were mixed, stirred for 5min and filtered to obtain an orange clear solution. The filtrate was placed in a 25ml beaker, covered with a plastic wrap, pierced with a needle and crystallized by volatilization. After about 3 days, orange blocky crystals were obtained. An orange block transparent crystal with a size of 0.52mm×0.32mm×0.27mm was selected for X-ray single crystal diffraction structure test. The molecular structure of the compound is shown in the attached figure 1 , and its unit cell packing structure is shown in the attached figure 2 .

[0033] A series of performance tests were carried out on pure phase crystal samples of phosphorescent cuprous complex CuI(TXP-2,4...

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Abstract

The invention discloses a CuIN2P type cuprous complex luminescent material with yellow-green phosphorescence, and a preparation method thereof. The phosphorescent complex provided by the invention is obtained through a coordination reaction of cuprous iodide and ligands. The complex has a molecular structural formula of CuI(TXP-2,4)(DAF), wherein TXP-2,4 and DAF are respectively electrically neutral ligands tris(2,4-xylyl)phosphine and 4,5-diazafluoren. The complex has the advantages of small molecule easy purification and high luminous efficiency. The complex is also easy to dissolve with an organic solvent. The material is obtained through a direct mixed reaction of cuprous iodide and ligand solutions. The method has the advantages of simple process, simple equipment, easy-to-obtain raw materials, low cost and the like. The material can be used as a photoluminescence yellow-green light material, and can be used as a luminescent layer phosphorescent material in a electroluminescent device composed of multiple layers of organic materials.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, to the fields of photoluminescent materials and electroluminescent materials, in particular to the field of organic electroluminescent materials. Background technique [0002] From the classification of the type of stimulated light, luminescent materials can be divided into two categories: photoluminescent and electroluminescent materials. Photoluminescence refers to a phenomenon in which a luminescent material is excited by an external light source, an excited state is generated inside the material, and then quickly transitions from the excited state back to the ground state of the material, and at the same time emits photon radiation to the outside world. X-ray radiation, ultraviolet radiation, visible light and infrared radiation can all cause photoluminescence. Photoluminescent materials can be used in scintillators in nuclear detection technology, fluorescence analysis, traffi...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07F19/00H01L51/54
Inventor 宋莉吴叶文蒋畅王秋华
Owner ZHEJIANG SCI-TECH UNIV
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