Iridium metal coordination compound organic fluorescent nanoparticles and preparation method thereof

A technology of iridium metal complexes and fluorescent particles is applied in the field of iridium complex organic fluorescent nanomaterials and their preparation, which can solve the problem of less research on phosphorescent heavy metal complexes, and achieve the effects of mild reaction conditions, no pollution and simple operation.

Inactive Publication Date: 2013-10-16
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Iridium metal coordination compound organic fluorescent nanoparticles and preparation method thereof
  • Iridium metal coordination compound organic fluorescent nanoparticles and preparation method thereof
  • Iridium metal coordination compound organic fluorescent nanoparticles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of 2-phenylpyridine iridium dichloro bridge complex, [(ppy) 2 IrCl 2 Ir(ppy) 2 ], where ppy is 2-phenylpyridine: under nitrogen protection, weigh IrCl 3 ·3H 2 O (5.2mmol) and 2-phenylpyridine (11.3mmol) were placed in a three-necked flask, then a mixed solvent of 2-ethoxyethanol and water with a volume ratio of 7:3 was added, and the above mixed solution was heated to 115°C , after stirring for 18 hours, cooled to room temperature, a yellow precipitate formed. The above precipitate was washed with water and ethanol respectively, and dried in vacuum to obtain the yellow solid product 2-phenylpyridine iridium dichloro bridge complex [(ppy) 2 IrCl 2 Ir(ppy) 2 ].

[0030] (2) Preparation of 3,8-dibromophenanthroline iridium 2-phenylpyridine complex: under nitrogen protection, weigh 2-phenylpyridine iridium dichloro bridge complex (0.25mmol) and 3,8 -Dibromophenanthroline (0.60mmol) joins in the three-necked flask, then adds the mixed solvent that the...

Embodiment 2

[0039] Steps (1) to (4) are the same as in Example 1.

[0040] (5) The synthesized 3,8-bis(4-pyridylethynyl)-phenanthroline iridium 2-phenylpyridine complex and trimesic acid were mixed with acetonitrile and methanol at a volume ratio of 20:1 Dissolve, then mix the two clear solutions together at a molar ratio of 3:2, and adjust the concentration of the iridium complex in the mixture solution to 5 μmol / ml, control the temperature at 30°C, stir for 120 hours, and the clear solution becomes cloudy , a tiny precipitate is formed, and the precipitate is taken to obtain organic fluorescent nanoparticles of the iridium complex.

[0041] The FE-SEM electron microscope picture of the product obtained in this embodiment is as follows image 3 As shown, most of them are in the shape of a cuboid, and a small part is in the shape of a cube.

[0042] The obtained metal iridium complex organic fluorescent nanoparticles are tested for emission spectrum, and the experimental results are as ...

Embodiment 3

[0044] IrCl in step (1) 3 ·3H 2 The amount of O used is 11 mmol, the amount of 2-phenylpyridine is 11.3 mmol, and the remaining steps are the same as in Example 1. Result is with embodiment 1.

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Abstract

The invention relates to the technical field of organic nanometer science and discloses iridium metal coordination compound organic fluorescent nanoparticles. The nanoparticles have the characteristics of rectangular or square shape, sizes between 400 nanometers and 3,000 nanometers, structures shown as a formula I, high optical property, capability of emitting red fluorescent light of about 635 nanometers and important potential value in the field of optical function organic nanomaterials. In the preparation method of the nanomaterial, a pyridine-containing cationic metal iridium coordination compound reacts with carboxylic acid under the action of super-molecular self-assembly. The invention has the advantages of simplicity in operation, mild condition, low equipment requirement, environmental friendliness and the like.

Description

technical field [0001] The invention relates to the field of organic nanomaterials, in particular to an iridium complex organic fluorescent nanomaterial based on supramolecular self-assembly and a preparation method thereof. Background technique [0002] The scientific community generally believes that nanotechnology is a major engine of economic growth in the 21st century, and it will become a "decisive technology" that surpasses network technology and gene technology, and will become the most promising material. Nowadays, there have been a lot of reports on the research on traditional inorganic nanomaterials, and organic nanomaterials have gradually become the research direction in the field of nanomaterials. Limited by the interaction mode between molecules, organic small molecule materials have low melting and boiling points and are easy to sublime. Most of the preparation methods of inorganic nanomaterials are not suitable for organic nanomaterials. Exploring new prepar...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07F15/00C07C63/307C07C51/41B82Y30/00B82Y40/00
Inventor 杨红李刘涛杨仕平
Owner SHANGHAI NORMAL UNIVERSITY
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