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Preparation method of organic room-temperature phosphorescent material with ultra-long phosphorescent lifetime

A technology of phosphorescence lifetime and organic phosphorus, which is applied in the fields of luminescent materials, fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of difficult synthesis, difficult control of luminous color, short phosphorescence lifetime, etc., and achieves broad application prospects, various forms, The effect of easy operation

Pending Publication Date: 2022-07-22
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in existing room temperature organic phosphorescent materials, such as difficulty in synthesis, short phosphorescence lifetime, and difficulty in controlling luminous color, the present invention provides a method for preparing a room temperature organic phosphorescent material with ultra-long phosphorescent lifetime and adjustable luminescent color.

Method used

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  • Preparation method of organic room-temperature phosphorescent material with ultra-long phosphorescent lifetime
  • Preparation method of organic room-temperature phosphorescent material with ultra-long phosphorescent lifetime
  • Preparation method of organic room-temperature phosphorescent material with ultra-long phosphorescent lifetime

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Preparation of blue ultra-long phosphorescent lifetime organic room-temperature phosphorescent materials:

[0062] The doping compound is trimeric indene, and its structural formula is shown in the following formula 1:

[0063]

[0064] Polymethyl methacrylate (PMMA) is the main polymer material;

[0065] (1) dissolving trimeric indene and polymethyl methacrylate in methylene chloride, the incorporation amount of trimeric indene is 0.1% of the weight of polymethyl methacrylate, and the concentration of polymethyl methacrylate in the solution is 200mg / ml to obtain a mixed solution;

[0066] (2) Inject the mixed drop on the quartz plate. After the solvent slowly evaporates, cover another quartz plate on the surface of the material at 150°C and compact it, and irradiate it with ultraviolet light for 30s to consume the residual oxygen in the material. A blue ultra-long phosphorescent lifetime organic room temperature phosphorescent material encapsulated between quartz ...

Embodiment 2

[0069] Preparation of yellow-green ultra-long phosphorescent lifetime organic room-temperature phosphorescent materials:

[0070] The doping compound is coronene, and the structural formula is shown in the following formula 2:

[0071]

[0072] Coronene is a commercially available product,

[0073] Polymethyl methacrylate (PMMA) is the main material.

[0074] (1) Dissolve coronene and polymethyl methacrylate (PMMA) in methylene chloride, the amount of coronene incorporated is 0.1% of the weight of polymethyl methacrylate, and the amount of polymethyl methacrylate in the solution is 0.1%. The concentration is 200mg / ml to obtain a mixed solution;

[0075] (2) Inject the mixed drop on the quartz plate. After the solvent slowly evaporates, cover another quartz plate on the surface of the material at 150°C and compact it, and irradiate it with ultraviolet light for 30s to consume the residual oxygen in the material. A yellow-green ultra-long phosphorescent lifetime organic ro...

Embodiment 3

[0078] Preparation of Orange Ultra-Long Phosphorescent Lifetime Organic Room-Temperature Phosphorescent Materials:

[0079] The doping compound is coronene, and its structural formula is shown in the following formula 3:

[0080]

[0081] Polycarbonate (PC) was used as the host polymer material.

[0082] (1) Dissolving hexabenzolone and polycarbonate (PC) in dichloromethane, the incorporation amount of hexabenzolone is 0.1% of the weight of polycarbonate (PC), and the concentration of polycarbonate in the solution is 100mg / ml to obtain a mixed solution;

[0083] (2) Inject the mixed drop on the quartz plate. After the solvent slowly evaporates, cover another quartz plate on the surface of the material at 150°C and compact it, and irradiate it with ultraviolet light for 30s to consume the residual oxygen in the material. An orange ultra-long phosphorescent lifetime organic room temperature phosphorescent material encapsulated between quartz sheets is obtained.

[0084] ...

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Abstract

The invention relates to a preparation method of a room-temperature organic phosphorescent material with ultra-long phosphorescent lifetime, which comprises the following steps: by taking a polycyclic aromatic compound without heavy atoms and heteroatoms or a derivative thereof as a doping compound and taking a rigid polymer as a main body material, doping by a solution method, a melt method or a chemical polymerization method, thereby obtaining the room-temperature organic phosphorescent material with ultra-long phosphorescent lifetime. The room-temperature organic phosphorescent material with ultra-long phosphorescent lifetime is obtained. By adjusting the conjugation degree of the doped compound, the triplet state energy level of molecules is changed, the phosphorescence color of the material is regulated and controlled, and the phosphorescence lifetime gt is achieved; the phosphorescence effect gt visible to naked eyes is achieved; the method is widely applied to phosphorescent dyes, information encryption, information storage, biological imaging and oxygen detection.

Description

technical field [0001] The invention relates to a preparation method of an organic room temperature phosphorescent material with an ultra-long phosphorescent life, belonging to the technical field of organic optoelectronic materials. Background technique [0002] Organic light-emitting materials refer to a class of organic materials that can transform into an excited state under light excitation and release energy to generate photons when returning to the ground state, mainly including fluorescent materials and phosphorescent materials. Compared with the nanosecond-level lifetime of fluorescent materials, phosphorescent materials have attracted more and more attention because they can fully utilize the radiative transition process of triplet excited states and have microsecond-level or even second-level lifetimes. [0003] As a typical phosphorescent material, organic room temperature phosphorescence (RTP) materials have optical properties such as long luminescence lifetime,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/02C09D11/50G01N21/64
CPCC09K11/06C09K11/025C09D11/50G01N21/6428C09K2211/1011
Inventor 刘阳陶绪堂郑晓鑫
Owner SHANDONG UNIV
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