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Yellow green phosphorescent cuprous complex luminous material based on diphenyleneimine

A technology of luminescent materials and complexes, which is applied in the direction of luminescent materials, copper organic compounds, compounds of group 5/15 elements of the periodic table, etc. Limitation and other issues, achieve good phosphorescence emission performance, promote inter-system crossing, and simple equipment

Inactive Publication Date: 2015-09-30
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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  • Yellow green phosphorescent cuprous complex luminous material based on diphenyleneimine
  • Yellow green phosphorescent cuprous complex luminous material based on diphenyleneimine
  • Yellow green phosphorescent cuprous complex luminous material based on diphenyleneimine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A large number 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 acetone, 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 acetone, then add this solution to the above solution A, and stir to make it fully undergo a coordination reaction , and finally the resulting yellow reaction solution was rotary evaporated to remove all solvents, and dried in vacuum to obtain a yellow needle-like fine crystal powder as the product, with a yield of 98% (calculated as Cu). Calculated by elemental analysis (C32H29N2PCuI): C, 57.97%; H, 4.41%; N, 4.23%. Experimental values: C, 58.60%; H, 4.40%; N, 4.11%. IR (KBr pellet, cm -1 ): 3449m, 3045m, 2958m, 1935w, 1588m, 1574m, 15...

Embodiment 2

[0032] Synthesis of Phosphorescent Cuprous Complex CuI(o-Tol 3 P) Single crystal of (DAF): CuI (0.019 g, 0.1 mmol) was dissolved in 8 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 8ml of acetone. 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 Erlenmeyer flask, covered with a plastic wrap, pierced with a needle and crystallized by volatilization. After about 3 days, yellow needle-like crystals were obtained. A yellow needle-like transparent crystal with a size of 0.35mm×0.23mm×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] p-phosphorescent cuprous complex CuI(o-Tol 3 A series of performance tests were carri...

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Abstract

The invention discloses a yellow green phosphorescent cuprous complex luminous material based on a diphenyleneimine ligand and a preparing method thereof. The phosphorescent complex is obtained through coordination reaction of cuprous iodide and the ligand. The molecular structural formula of the phosphorescent complex is CuI(o-Tol3P)(DAF), wherein o-Tol3P and DAF are electroneutral Tri(2-tolyl)phosphine containing a P ligand and heterocyclic ligand 4,5-carbolines respectively. The complex has the advantages that micromolecule purification is easy and luminous efficiency is high and also has the advantage of being capable of being easily dissolved in organic solvent. The material is obtained through direct mixed reaction of cuprous iodide and a ligand solution and has the advantages that technology is simple, equipment is simple, and raw materials are easy to obtain and low in cost. The material can serve as a photoluminescence yellow green luminescent material and can also serve as a luminescent layer phosphor material in an electroluminescence 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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