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Phosphorescent iridium complex with stimuli responsibility, preparation method and application

A phosphorescent iridium complex and stimulus-responsive technology, applied in the field of preparation of phosphorescent iridium complexes, can solve problems such as limited application, and achieve the effect of realizing information recording and excellent photophysical properties

Inactive Publication Date: 2014-07-23
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these phosphorescent materials are generally responsive in solution, which limits their application in solid-state devices.

Method used

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  • Phosphorescent iridium complex with stimuli responsibility, preparation method and application
  • Phosphorescent iridium complex with stimuli responsibility, preparation method and application
  • Phosphorescent iridium complex with stimuli responsibility, preparation method and application

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preparation example Construction

[0029] The preparation method of the information storage device is as follows:

[0030] The ITO conductive glass was washed with deionized water, acetone, and 2-propanol in ultrasonic for 15 minutes. Iridium complex 1 to 10 -3 The solution of M (ionic liquid is made solvent), after adding the silicon dioxide nano-particle that is solution 10% weight to this solution, after stirring evenly, this material is coated on the ITO conductive glass that cleans up and makes the iridium-containing complex Quasi-solid-state thin-film devices. Then move the thin film device to the probe station, connect the probe connected to the anode to the ITO layer, and use the probe connected to the cathode as a "pen" to write information.

[0031] In order to better understand the content of the patent of the present invention, the technical solution of the present invention will be further described below through specific examples and illustrations. However, these implementation examples do not ...

Embodiment 1

[0032] Embodiment 1: Preparation of auxiliary ligands containing active functional groups

[0033] Compound 1: Py-NH 2 Compound preparation

[0034]

[0035] Prepare fresh sodium methoxide solution in a one-necked bottle. 20 mL of anhydrous methanol was stirred and 50 mg of sodium wire was added, stirred to make the sodium react completely, and then 2-cyanopyridine (2.67 g, 26 mmol) was added. Stir at room temperature for 22 hours to form a homogeneous solution. Ammonium chloride (1.1 g, 28 mmol) was added and stirring was continued at room temperature for 6 hours. Filter to remove unreacted ammonium chloride, spin the filtrate to remove the methanol solvent to obtain a light yellow solid powder, wash with ether three times to remove unreacted 2-cyanopyridine, and use ethanol-ether to recrystallize to obtain the white product Py-NH 2 . Yield: 83%. 1 H NMR(400MHz,DMSO)δ=9.69(s,4H),8.85–8.73(m,1H),8.45(d,J=8.0Hz,1H),8.14(td,J=7.8,1.7Hz,1H) ,7.85–7.71(m,1H). 13 C NMR (...

Embodiment 2

[0039] Embodiment 2: the preparation that contains active functional group iridium complex:

[0040] The synthetic steps of this series of iridium complexes are as follows: add IrCl in a two-necked flask 3 ·3H 2 O (5.52mmol) and C^N ligand (one of ppy, dfppy, pqu, piq, thq and btq) (11.04mmol), the reaction system was protected with nitrogen, and 2-ethoxyethanol and deionized water were added ( V / V, 3 / 1) as a solvent, heated to 110°C, stirred for 24 hours, and a precipitate formed. After the reaction stopped, the reaction device was lowered to room temperature, a large amount of water was injected, and the precipitate was obtained by suction filtration. Wash with water and ethanol, and dry to obtain the series of iridium dichloro bridge compounds. Weigh the iridium dichloro bridge compound (0.093mmol) and the auxiliary ligand bpy-OH (0.186mmol) into the double-necked bottle, then add 12mL CH 2 Cl 2 Mixed solvent with methanol (3:1, v / v), reflux under magnetic stirring. A...

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Abstract

The invention relates to a phosphorescent iridium complex with stimuli responsibility. The phosphorescent iridium complex is composed of a cyclometalated ligand, a metal center and an assistant ligand containing an active function group, and has the structure general formula shown in the specification. The compound disclosed by the invention is capable of causing variation of phosphorescence emission wavelength under stimulation of an acidic or basic reagent; also under electricity stimulation, the compound is capable of causing variation of emission wavelength and also is capable of causing variation of emission lifetime; and based on the electricity stimulation response characteristics and by means of time resolution technology, the phosphorescent iridium complex is applicable to construct memory devices for information recording, encryption and decryption. The phosphorescent iridium complex disclosed by the invention has important application prospect on aspects of information recording, information encryption and the like.

Description

technical field [0001] The invention belongs to the technical field of organic photoelectric materials. It specifically relates to a preparation method of a kind of phosphorescent iridium complexes with stimulus response properties and its application fields in storage, cell imaging, display and sensing. Background technique [0002] In recent years, smart materials have important application prospects in human production and life, and have attracted extensive attention from researchers in business and academia. The so-called smart material is a new material that can sense changes in the surrounding environment and can respond to changes in the environment. Stimulus-responsive materials are a type of smart materials, which are materials whose physical or chemical properties will change accordingly under the stimulation of environmental factors. Stimuli include light, temperature, pH, ionic strength, electric and magnetic fields, etc. Electrochromic materials, that is, ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06G11B7/26
Inventor 赵强黄维林文鹏刘淑娟许文娟
Owner NANJING UNIV OF POSTS & TELECOMM
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