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Shape-controlled iridium metal complex organic fluorescence nano particle and preparation method thereof

An iridium metal complex, fluorescent nanotechnology, applied in the field of organic nanomaterials, can solve the problem of less research on phosphorescent heavy metal complexes, and achieve the effects of excellent optical performance, mild reaction conditions and simple operation.

Inactive Publication Date: 2012-08-22
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as phosphorescent materials with superior performance, there are relatively few studies on phosphorescent heavy metal complexes in organic fluorescent nanomaterials.

Method used

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  • Shape-controlled iridium metal complex organic fluorescence nano particle and preparation method thereof
  • Shape-controlled iridium metal complex organic fluorescence nano particle and preparation method thereof
  • Shape-controlled iridium metal complex organic fluorescence nano particle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of 1,3,5-tris(4,5-dihydro-1-hydrogen-imidazol-2-yl)benzene (Tib): Weigh 11mmol of trimesic acid, 24mmol of ethylenediamine hydrochloride, 5.8mmol p-toluenesulfonic acid was added into the three-necked flask, then 2.4ml ethylenediamine, 30ml ethylene glycol (with anhydrous MgSO 4 Drying); then heat up, the mixture becomes a yellow clear liquid, reflux (190 ~ 210 ° C) for 5 hours; after cooling down, the solvent is distilled off under reduced pressure to obtain a brownish yellow solid, and then add an aqueous solution containing 3ml HCl (11mol / L) Dissolve it in 50ml to obtain a dark brown-yellow solution, then slowly add NaOH solution (10mol / L) dropwise to it, and solids precipitate out, continue to add NaOH solution dropwise until the precipitation no longer appears (about 30ml); let it stand for a while After that, it was suction filtered, the obtained solid was washed several times with water, and after drying, a brownish yellow solid was obtained. The...

Embodiment 2

[0035] Steps (1)-(3) are the same as in Example 1.

[0036] (3) 4,4'-bipyridine dicarboxylate iridium 2-phenylpyridine complex and Tib are mixed in a molar ratio of 3:1, and then dissolved with 15ml of methanol (4,4'-bipyridine dicarboxylate iridium The concentration of the 2-phenylpyridine complex is 2.67mmol / L), stirred at room temperature for 24 hours, the clear solution becomes turbid, and a precipitate is formed, and the resulting precipitate is washed and dried to obtain organic fluorescent nanoparticles of the iridium complex.

[0037] The FESEM electron microscope figure of the product obtained in this embodiment is as follows figure 2 As shown, most of them are solid spheres with a size of 100-500 nm.

Embodiment 3

[0039] Steps (1)-(2) are the same as in Example 1.

[0040] (3) Mix 4,4'-bipyridine dicarboxylic acid iridium 2-phenylpyridine complex and Tib at a molar ratio of 3:1, then dissolve (4,4'-bipyridine dicarboxylic acid with 7.5ml of methanol The concentration of the iridium 2-phenylpyridine complex is 5.33mmol / L), stirred at room temperature for 24 hours, the clear solution becomes turbid, and a precipitate is formed, and the resulting precipitate is washed and dried to obtain the iridium complex organic fluorescent nanoparticles.

[0041] The FESEM electron microscope figure of the product obtained in this embodiment is as follows image 3 As shown, most of them are linear morphology with a width of about 200 nm.

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Abstract

The invention relates to the field of organic nanoscale science and technology and discloses an iridium complex organic fluorescence nano particle and a synthetic method thereof; the transformation of the nano particle from zero dimension to one dimension can be realized through changing concentration of reaction liquid; the structure of the nano particle is shown as formula (I); and the nano particle has excellent optical property, can emit red fluorescence ranging from 560-600nm, and has significant potential application value in the optical property organic nano material field. The nano material is formed by cationoid metal iridium complex containing carboxylic acid and 1, 3, 5-three (4, 5-dihydro-1-hydrogen-imidazole-2-base) benzene (Tib) through supramolecular self-assembly function. The synthetic method has the advantages of easiness in operation, moderate condition, low requirement on equipment, no pollution and the like.

Description

technical field [0001] The invention relates to the field of organic nanomaterials, in particular to a zero-dimensional and one-dimensional iridium complex organic fluorescent nanomaterial based on supramolecular self-assembly and a preparation method thereof. Background technique [0002] Supramolecular chemistry studies the chemical field of molecular aggregates formed based on non-covalent bond interactions between molecules. It mainly studies the weak non-covalent bond interactions between molecules, such as hydrogen bonds, coordination bonds, hydrophilic Self-assembly, structure and function of molecular aggregates generated by / hydrophobic interactions and their synergy. So far, the chemical community has created 20 million kinds of molecules. In principle, they can be assembled at different levels into a large number of supramolecular systems with special functions depending on the structure of the assembly. It can be seen that supramolecular chemistry has opened up t...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07F15/00C07D233/06
Inventor 杨红秦丽洁丁亮秦长圆杨仕平
Owner SHANGHAI NORMAL UNIVERSITY
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