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New crystal of CuIN2P cuprous complex luminescent material based on azafluorene

A technology of luminescent materials and complexes, which is applied in the field of luminescent materials and organic electroluminescent materials, can solve the problems of unsatisfactory suppression of excited state distortion, luminous efficiency not meeting application requirements, limitations, etc., to achieve good phosphorescence emission performance, The effect of promoting inter-system crossing and simple equipment

Inactive Publication Date: 2015-10-14
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • New crystal of CuIN2P cuprous complex luminescent material based on azafluorene
  • New crystal of CuIN2P cuprous complex luminescent material based on azafluorene
  • New crystal of CuIN2P cuprous complex luminescent material based on azafluorene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A large number of new crystal forms of phosphorescent complexes CuI(o-Tol 3 P) Preparation of (DAF) microcrystalline samples: Weigh 0.5 mmol of CuI and dissolve it in 25 mL of acetonitrile, weigh 0.5 mmol of tris(2-tolyl)phosphine ligand and dissolve it in 15 mL of ethanol, and mix the two solutions , and stirred to make it fully undergo a coordination reaction to obtain a colorless solution A; then weigh 0.5 mmol of DAF ligand and dissolve it in 15 mL of ethanol, then add this solution to the above solution A, and stir to make it fully undergo a coordination reaction , and finally the obtained yellow reaction solution was rotary evaporated to remove all solvents, and dried in vacuum to obtain an orange granular fine crystal powder as the product, with a yield of 96% (calculated as Cu). Calculated by elemental analysis (C32H29N2PCuI): C, 57.97%; H, 4.41%; N, 4.23%. Experimental values: C, 58.16%; H, 4.41%; N, 4.08%. IR (KBr pellet, cm -1 ): 3441m, 3054m, 3003w, 2946w...

Embodiment 2

[0032] Synthesis of New Phosphorescent Cuprous Complex CuI(o-Tol 3 P) Single crystal of (DAF): Dissolve CuI (0.019 g, 0.1 mmol) in 5 ml of acetonitrile, ligand 4,5-diazafluorene (0.017 g, 0.1 mmol) and tris(2-tolyl) Phosphine (0.030g, 0.1mmol) was dissolved in 5ml of ethanol, after complete dissolution, the two were mixed, stirred for 5min and then filtered to obtain a yellow 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 2 days, orange blocky crystals were obtained. An orange block transparent crystal with a size of 0.23mm×0.20mm×0.12mm 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] On the New Phosphorescent Cuprous Complex CuI(o-Tol 3 A series of performance tests were carried out on pur...

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Abstract

The invention discloses a new-crystal yellow phosphorescent CuIN2P cuprous complex luminescent material based on an azafluorene ligand and a preparation method thereof. The new-crystal phosphorescent complex is obtained by carrying out a coordination reaction of cuprous iodide and the ligand and has a molecular structural formula of CuI(o-Tol3P)(DAF), wherein in the formula, o-Tol3P and DAF are respectively an electrically neutral P-containing ligand tris(2-methylphenyl)phosphine and an electrically neutral heterocyclic ligand 4,5-diazafluorene. The complex has the advantages of easy purification of small molecules, high luminous efficiency, and easy dissolving with use of an organic solvent. The material is obtained by carrying out direction mixed reaction of a cuprous iodide solution and a ligand solution, has the advantages of simple and convenient process, simple equipment, easily available raw materials, low cost and the like. The material can be used as the photoluminescent yellow photo-material, and also can be used as a luminous layer phosphorescent material in an 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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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07F1/08C07F9/50H01L51/54
Inventor 宋莉吴叶文蒋畅王秋华
Owner ZHEJIANG SCI-TECH UNIV
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